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1121914 commits

Author SHA1 Message Date
Perry Yuan
d8bee41db8 cpufreq: amd-pstate: fix white-space
Remove the white space and correct mixed-up indentation

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-08-31 21:05:37 +02:00
Perry Yuan
4f59540c3c cpufreq: amd-pstate: simplify cpudata pointer assignment
move the cpudata assignment to cpudata declaration which
will simplify the functions.

No functional change intended.

Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-08-31 21:05:37 +02:00
Rafael J. Wysocki
45fa44431b Merge back cpufreq material for v6.1. 2022-08-30 14:20:54 +02:00
Lukasz Luba
6d5afdc97e cpufreq: schedutil: Move max CPU capacity to sugov_policy
There is no need to keep the max CPU capacity in the per_cpu instance.
Furthermore, there is no need to check and update that variable
(sg_cpu->max) every time in the frequency change request, which is part
of hot path. Instead use struct sugov_policy to store that information.
Initialize the max CPU capacity during the setup and start callback.
We can do that since all CPUs in the same frequency domain have the same
max capacity (capacity setup and thermal pressure are based on that).

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-08-23 20:03:33 +02:00
Lukasz Luba
6ca7076fbf cpufreq: check only freq_table in __resolve_freq()
There is no need to check if the cpufreq driver implements callback
cpufreq_driver::target_index. The logic in the __resolve_freq uses
the frequency table available in the policy. It doesn't matter if the
driver provides 'target_index' or 'target' callback. It just has to
populate the 'policy->freq_table'.

Thus, check only frequency table during the frequency resolving call.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-08-23 20:00:52 +02:00
Linus Torvalds
1c23f9e627 Linux 6.0-rc2 2022-08-21 17:32:54 -07:00
Linus Torvalds
4daa6a81c0 Misc irqchip fixes: LoongArch driver fixes and a Hyper-V IOMMU fix.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'irq-urgent-2022-08-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Ingo Molnar:
 "Misc irqchip fixes: LoongArch driver fixes and a Hyper-V IOMMU fix"

* tag 'irq-urgent-2022-08-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/loongson-liointc: Fix an error handling path in liointc_init()
  irqchip/loongarch: Fix irq_domain_alloc_fwnode() abuse
  irqchip/loongson-pch-pic: Move find_pch_pic() into CONFIG_ACPI
  irqchip/loongson-eiointc: Fix a build warning
  irqchip/loongson-eiointc: Fix irq affinity setting
  iommu/hyper-v: Use helper instead of directly accessing affinity
2022-08-21 15:09:55 -07:00
Linus Torvalds
4f61f842d1 Fix a kprobes bug in JNG/JNLE emulation when a kprobe is
installed at such instructions, possibly resulting in
 incorrect execution (the wrong branch taken).
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2022-08-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 kprobes fix from Ingo Molnar:
 "Fix a kprobes bug in JNG/JNLE emulation when a kprobe is installed at
  such instructions, possibly resulting in incorrect execution (the
  wrong branch taken)"

* tag 'perf-urgent-2022-08-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/kprobes: Fix JNG/JNLE emulation
2022-08-21 15:01:51 -07:00
Linus Torvalds
7fb312d225 Various fixes for tracing:
- Fix a return value of traceprobe_parse_event_name()
 
  - Fix NULL pointer dereference from failed ftrace enabling
 
  - Fix NULL pointer dereference when asking for registers from eprobes
 
  - Make eprobes consistent with kprobes/uprobes, filters and histograms
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Merge tag 'trace-v6.0-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Various fixes for tracing:

   - Fix a return value of traceprobe_parse_event_name()

   - Fix NULL pointer dereference from failed ftrace enabling

   - Fix NULL pointer dereference when asking for registers from eprobes

   - Make eprobes consistent with kprobes/uprobes, filters and
     histograms"

* tag 'trace-v6.0-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Have filter accept "common_cpu" to be consistent
  tracing/probes: Have kprobes and uprobes use $COMM too
  tracing/eprobes: Have event probes be consistent with kprobes and uprobes
  tracing/eprobes: Fix reading of string fields
  tracing/eprobes: Do not hardcode $comm as a string
  tracing/eprobes: Do not allow eprobes to use $stack, or % for regs
  ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead
  tracing/perf: Fix double put of trace event when init fails
  tracing: React to error return from traceprobe_parse_event_name()
2022-08-21 14:49:42 -07:00
Steven Rostedt (Google)
b2380577d4 tracing: Have filter accept "common_cpu" to be consistent
Make filtering consistent with histograms. As "cpu" can be a field of an
event, allow for "common_cpu" to keep it from being confused with the
"cpu" field of the event.

Link: https://lkml.kernel.org/r/20220820134401.513062765@goodmis.org
Link: https://lore.kernel.org/all/20220820220920.e42fa32b70505b1904f0a0ad@kernel.org/

Cc: stable@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Fixes: 1e3bac71c5 ("tracing/histogram: Rename "cpu" to "common_cpu"")
Suggested-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-08-21 15:56:08 -04:00
Steven Rostedt (Google)
ab8384442e tracing/probes: Have kprobes and uprobes use $COMM too
Both $comm and $COMM can be used to get current->comm in eprobes and the
filtering and histogram logic. Make kprobes and uprobes consistent in this
regard and allow both $comm and $COMM as well. Currently kprobes and
uprobes only handle $comm, which is inconsistent with the other utilities,
and can be confusing to users.

Link: https://lkml.kernel.org/r/20220820134401.317014913@goodmis.org
Link: https://lore.kernel.org/all/20220820220442.776e1ddaf8836e82edb34d01@kernel.org/

Cc: stable@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Fixes: 533059281e ("tracing: probeevent: Introduce new argument fetching code")
Suggested-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-08-21 15:56:08 -04:00
Steven Rostedt (Google)
6a832ec3d6 tracing/eprobes: Have event probes be consistent with kprobes and uprobes
Currently, if a symbol "@" is attempted to be used with an event probe
(eprobes), it will cause a NULL pointer dereference crash.

Both kprobes and uprobes can reference data other than the main registers.
Such as immediate address, symbols and the current task name. Have eprobes
do the same thing.

For "comm", if "comm" is used and the event being attached to does not
have the "comm" field, then make it the "$comm" that kprobes has. This is
consistent to the way histograms and filters work.

Link: https://lkml.kernel.org/r/20220820134401.136924220@goodmis.org

Cc: stable@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Fixes: 7491e2c442 ("tracing: Add a probe that attaches to trace events")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-08-21 15:56:08 -04:00
Steven Rostedt (Google)
f04dec9346 tracing/eprobes: Fix reading of string fields
Currently when an event probe (eprobe) hooks to a string field, it does
not display it as a string, but instead as a number. This makes the field
rather useless. Handle the different kinds of strings, dynamic, static,
relational/dynamic etc.

Now when a string field is used, the ":string" type can be used to display
it:

  echo "e:sw sched/sched_switch comm=$next_comm:string" > dynamic_events

Link: https://lkml.kernel.org/r/20220820134400.959640191@goodmis.org

Cc: stable@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Fixes: 7491e2c442 ("tracing: Add a probe that attaches to trace events")
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-08-21 15:56:08 -04:00
Steven Rostedt (Google)
02333de90e tracing/eprobes: Do not hardcode $comm as a string
The variable $comm is hard coded as a string, which is true for both
kprobes and uprobes, but for event probes (eprobes) it is a field name. In
most cases the "comm" field would be a string, but there's no guarantee of
that fact.

Do not assume that comm is a string. Not to mention, it currently forces
comm fields to fault, as string processing for event probes is currently
broken.

Link: https://lkml.kernel.org/r/20220820134400.756152112@goodmis.org

Cc: stable@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Fixes: 7491e2c442 ("tracing: Add a probe that attaches to trace events")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-08-21 15:56:08 -04:00
Steven Rostedt (Google)
2673c60ee6 tracing/eprobes: Do not allow eprobes to use $stack, or % for regs
While playing with event probes (eprobes), I tried to see what would
happen if I attempted to retrieve the instruction pointer (%rip) knowing
that event probes do not use pt_regs. The result was:

 BUG: kernel NULL pointer dereference, address: 0000000000000024
 #PF: supervisor read access in kernel mode
 #PF: error_code(0x0000) - not-present page
 PGD 0 P4D 0
 Oops: 0000 [#1] PREEMPT SMP PTI
 CPU: 1 PID: 1847 Comm: trace-cmd Not tainted 5.19.0-rc5-test+ #309
 Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01
v03.03 07/14/2016
 RIP: 0010:get_event_field.isra.0+0x0/0x50
 Code: ff 48 c7 c7 c0 8f 74 a1 e8 3d 8b f5 ff e8 88 09 f6 ff 4c 89 e7 e8
50 6a 13 00 48 89 ef 5b 5d 41 5c 41 5d e9 42 6a 13 00 66 90 <48> 63 47 24
8b 57 2c 48 01 c6 8b 47 28 83 f8 02 74 0e 83 f8 04 74
 RSP: 0018:ffff916c394bbaf0 EFLAGS: 00010086
 RAX: ffff916c854041d8 RBX: ffff916c8d9fbf50 RCX: ffff916c255d2000
 RDX: 0000000000000000 RSI: ffff916c255d2008 RDI: 0000000000000000
 RBP: 0000000000000000 R08: ffff916c3a2a0c08 R09: ffff916c394bbda8
 R10: 0000000000000000 R11: 0000000000000000 R12: ffff916c854041d8
 R13: ffff916c854041b0 R14: 0000000000000000 R15: 0000000000000000
 FS:  0000000000000000(0000) GS:ffff916c9ea40000(0000)
knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000024 CR3: 000000011b60a002 CR4: 00000000001706e0
 Call Trace:
  <TASK>
  get_eprobe_size+0xb4/0x640
  ? __mod_node_page_state+0x72/0xc0
  __eprobe_trace_func+0x59/0x1a0
  ? __mod_lruvec_page_state+0xaa/0x1b0
  ? page_remove_file_rmap+0x14/0x230
  ? page_remove_rmap+0xda/0x170
  event_triggers_call+0x52/0xe0
  trace_event_buffer_commit+0x18f/0x240
  trace_event_raw_event_sched_wakeup_template+0x7a/0xb0
  try_to_wake_up+0x260/0x4c0
  __wake_up_common+0x80/0x180
  __wake_up_common_lock+0x7c/0xc0
  do_notify_parent+0x1c9/0x2a0
  exit_notify+0x1a9/0x220
  do_exit+0x2ba/0x450
  do_group_exit+0x2d/0x90
  __x64_sys_exit_group+0x14/0x20
  do_syscall_64+0x3b/0x90
  entry_SYSCALL_64_after_hwframe+0x46/0xb0

Obviously this is not the desired result.

Move the testing for TPARG_FL_TPOINT which is only used for event probes
to the top of the "$" variable check, as all the other variables are not
used for event probes. Also add a check in the register parsing "%" to
fail if an event probe is used.

Link: https://lkml.kernel.org/r/20220820134400.564426983@goodmis.org

Cc: stable@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Fixes: 7491e2c442 ("tracing: Add a probe that attaches to trace events")
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-08-21 15:56:08 -04:00
Yang Jihong
c3b0f72e80 ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead
ftrace_startup does not remove ops from ftrace_ops_list when
ftrace_startup_enable fails:

register_ftrace_function
  ftrace_startup
    __register_ftrace_function
      ...
      add_ftrace_ops(&ftrace_ops_list, ops)
      ...
    ...
    ftrace_startup_enable // if ftrace failed to modify, ftrace_disabled is set to 1
    ...
  return 0 // ops is in the ftrace_ops_list.

When ftrace_disabled = 1, unregister_ftrace_function simply returns without doing anything:
unregister_ftrace_function
  ftrace_shutdown
    if (unlikely(ftrace_disabled))
            return -ENODEV;  // return here, __unregister_ftrace_function is not executed,
                             // as a result, ops is still in the ftrace_ops_list
    __unregister_ftrace_function
    ...

If ops is dynamically allocated, it will be free later, in this case,
is_ftrace_trampoline accesses NULL pointer:

is_ftrace_trampoline
  ftrace_ops_trampoline
    do_for_each_ftrace_op(op, ftrace_ops_list) // OOPS! op may be NULL!

Syzkaller reports as follows:
[ 1203.506103] BUG: kernel NULL pointer dereference, address: 000000000000010b
[ 1203.508039] #PF: supervisor read access in kernel mode
[ 1203.508798] #PF: error_code(0x0000) - not-present page
[ 1203.509558] PGD 800000011660b067 P4D 800000011660b067 PUD 130fb8067 PMD 0
[ 1203.510560] Oops: 0000 [#1] SMP KASAN PTI
[ 1203.511189] CPU: 6 PID: 29532 Comm: syz-executor.2 Tainted: G    B   W         5.10.0 #8
[ 1203.512324] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 1203.513895] RIP: 0010:is_ftrace_trampoline+0x26/0xb0
[ 1203.514644] Code: ff eb d3 90 41 55 41 54 49 89 fc 55 53 e8 f2 00 fd ff 48 8b 1d 3b 35 5d 03 e8 e6 00 fd ff 48 8d bb 90 00 00 00 e8 2a 81 26 00 <48> 8b ab 90 00 00 00 48 85 ed 74 1d e8 c9 00 fd ff 48 8d bb 98 00
[ 1203.518838] RSP: 0018:ffffc900012cf960 EFLAGS: 00010246
[ 1203.520092] RAX: 0000000000000000 RBX: 000000000000007b RCX: ffffffff8a331866
[ 1203.521469] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000000000010b
[ 1203.522583] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8df18b07
[ 1203.523550] R10: fffffbfff1be3160 R11: 0000000000000001 R12: 0000000000478399
[ 1203.524596] R13: 0000000000000000 R14: ffff888145088000 R15: 0000000000000008
[ 1203.525634] FS:  00007f429f5f4700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
[ 1203.526801] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1203.527626] CR2: 000000000000010b CR3: 0000000170e1e001 CR4: 00000000003706e0
[ 1203.528611] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1203.529605] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Therefore, when ftrace_startup_enable fails, we need to rollback registration
process and remove ops from ftrace_ops_list.

Link: https://lkml.kernel.org/r/20220818032659.56209-1-yangjihong1@huawei.com

Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-08-21 15:56:07 -04:00
Steven Rostedt (Google)
7249921d94 tracing/perf: Fix double put of trace event when init fails
If in perf_trace_event_init(), the perf_trace_event_open() fails, then it
will call perf_trace_event_unreg() which will not only unregister the perf
trace event, but will also call the put() function of the tp_event.

The problem here is that the trace_event_try_get_ref() is called by the
caller of perf_trace_event_init() and if perf_trace_event_init() returns a
failure, it will then call trace_event_put(). But since the
perf_trace_event_unreg() already called the trace_event_put() function, it
triggers a WARN_ON().

 WARNING: CPU: 1 PID: 30309 at kernel/trace/trace_dynevent.c:46 trace_event_dyn_put_ref+0x15/0x20

If perf_trace_event_reg() does not call the trace_event_try_get_ref() then
the perf_trace_event_unreg() should not be calling trace_event_put(). This
breaks symmetry and causes bugs like these.

Pull out the trace_event_put() from perf_trace_event_unreg() and call it
in the locations that perf_trace_event_unreg() is called. This not only
fixes this bug, but also brings back the proper symmetry of the reg/unreg
vs get/put logic.

Link: https://lore.kernel.org/all/cover.1660347763.git.kjlx@templeofstupid.com/
Link: https://lkml.kernel.org/r/20220816192817.43d5e17f@gandalf.local.home

Cc: stable@vger.kernel.org
Fixes: 1d18538e6a ("tracing: Have dynamic events have a ref counter")
Reported-by: Krister Johansen <kjlx@templeofstupid.com>
Reviewed-by: Krister Johansen <kjlx@templeofstupid.com>
Tested-by: Krister Johansen <kjlx@templeofstupid.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-08-21 15:56:07 -04:00
Lukas Bulwahn
d8a64313c1 tracing: React to error return from traceprobe_parse_event_name()
The function traceprobe_parse_event_name() may set the first two function
arguments to a non-null value and still return -EINVAL to indicate an
unsuccessful completion of the function. Hence, it is not sufficient to
just check the result of the two function arguments for being not null,
but the return value also needs to be checked.

Commit 95c104c378 ("tracing: Auto generate event name when creating a
group of events") changed the error-return-value checking of the second
traceprobe_parse_event_name() invocation in __trace_eprobe_create() and
removed checking the return value to jump to the error handling case.

Reinstate using the return value in the error-return-value checking.

Link: https://lkml.kernel.org/r/20220811071734.20700-1-lukas.bulwahn@gmail.com

Fixes: 95c104c378 ("tracing: Auto generate event name when creating a group of events")
Acked-by: Linyu Yuan <quic_linyyuan@quicinc.com>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-08-21 15:56:07 -04:00
Linus Torvalds
e3f259d33c This pull request includes a revert to fix a regression introduced this
merge window and a fix for proper error handling in the remove path of
 the iMX driver.
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Merge tag 'i2c-for-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "A revert to fix a regression introduced this merge window and a fix
  for proper error handling in the remove path of the iMX driver"

* tag 'i2c-for-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: imx: Make sure to unregister adapter on remove()
  Revert "i2c: scmi: Replace open coded device_get_match_data()"
2022-08-21 11:18:33 -07:00
Linus Torvalds
367bcbc5b5 5 cifs/smb3 fixes, one for stable
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Merge tag '6.0-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs client fixes from Steve French:

 - memory leak fix

 - two small cleanups

 - trivial strlcpy removal

 - update missing entry for cifs headers in MAINTAINERS file

* tag '6.0-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: move from strlcpy with unused retval to strscpy
  cifs: Fix memory leak on the deferred close
  cifs: remove useless parameter 'is_fsctl' from SMB2_ioctl()
  cifs: remove unused server parameter from calc_smb_size()
  cifs: missing directory in MAINTAINERS file
2022-08-21 10:21:16 -07:00
Nick Desaulniers
a0a12c3ed0 asm goto: eradicate CC_HAS_ASM_GOTO
GCC has supported asm goto since 4.5, and Clang has since version 9.0.0.
The minimum supported versions of these tools for the build according to
Documentation/process/changes.rst are 5.1 and 11.0.0 respectively.

Remove the feature detection script, Kconfig option, and clean up some
fallback code that is no longer supported.

The removed script was also testing for a GCC specific bug that was
fixed in the 4.7 release.

Also remove workarounds for bpftrace using clang older than 9.0.0, since
other BPF backend fixes are required at this point.

Link: https://lore.kernel.org/lkml/CAK7LNATSr=BXKfkdW8f-H5VT_w=xBpT2ZQcZ7rm6JfkdE+QnmA@mail.gmail.com/
Link: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48637
Acked-by: Borislav Petkov <bp@suse.de>
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-08-21 10:06:28 -07:00
Uwe Kleine-König
d98bdd3a5b i2c: imx: Make sure to unregister adapter on remove()
If for whatever reasons pm_runtime_resume_and_get() fails and .remove() is
exited early, the i2c adapter stays around and the irq still calls its
handler, while the driver data and the register mapping go away. So if
later the i2c adapter is accessed or the irq triggers this results in
havoc accessing freed memory and unmapped registers.

So unregister the software resources even if resume failed, and only skip
the hardware access in that case.

Fixes: 588eb93ea4 ("i2c: imx: add runtime pm support to improve the performance")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-08-21 10:27:33 +02:00
Wolfram Sang
3df71d7064 Revert "i2c: scmi: Replace open coded device_get_match_data()"
This reverts commit 9ae551ded5. We got a
regression report, so ensure this machine boots again. We will come back
with a better version hopefully.

Reported-by: Josef Johansson <josef@oderland.se>
Link: https://lore.kernel.org/r/4d2d5b04-0b6c-1cb1-a63f-dc06dfe1b5da@oderland.se
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-08-21 10:27:07 +02:00
Linus Torvalds
15b3f48a43 Kbuild fixes for v6.0
- Fix module versioning broken on some architectures
 
  - Make dummy-tools enable CONFIG_PPC_LONG_DOUBLE_128
 
  - Remove -Wformat-zero-length, which has no warning instance
 
  - Fix the order between drivers and libs in modules.order
 
  - Fix false-positive warnings in clang-analyzer
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Merge tag 'kbuild-fixes-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix module versioning broken on some architectures

 - Make dummy-tools enable CONFIG_PPC_LONG_DOUBLE_128

 - Remove -Wformat-zero-length, which has no warning instance

 - Fix the order between drivers and libs in modules.order

 - Fix false-positive warnings in clang-analyzer

* tag 'kbuild-fixes-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  scripts/clang-tools: Remove DeprecatedOrUnsafeBufferHandling check
  kbuild: fix the modules order between drivers and libs
  scripts/Makefile.extrawarn: Do not disable clang's -Wformat-zero-length
  kbuild: dummy-tools: pretend we understand __LONG_DOUBLE_128__
  modpost: fix module versioning when a symbol lacks valid CRC
2022-08-20 14:55:38 -07:00
Linus Torvalds
16b3d851c0 perf tools fixes for v6.0: 1st batch
- Fix alignment for cpu map masks in event encoding.
 
 - Support reading PERF_FORMAT_LOST, perf tool counterpart for a feature
   that was added in this merge window.
 
 - Sync perf tools copies of kernel headers: socket, msr-index, fscrypt,
   cpufeatures, i915_drm, kvm, vhost, perf_event.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-fixes-for-v6.0-2022-08-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix alignment for cpu map masks in event encoding.

 - Support reading PERF_FORMAT_LOST, perf tool counterpart for a feature
   that was added in this merge window.

 - Sync perf tools copies of kernel headers: socket, msr-index, fscrypt,
   cpufeatures, i915_drm, kvm, vhost, perf_event.

* tag 'perf-tools-fixes-for-v6.0-2022-08-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf tools: Support reading PERF_FORMAT_LOST
  libperf: Add a test case for read formats
  libperf: Handle read format in perf_evsel__read()
  tools headers UAPI: Sync linux/perf_event.h with the kernel sources
  tools headers UAPI: Sync x86's asm/kvm.h with the kernel sources
  tools headers UAPI: Sync KVM's vmx.h header with the kernel sources
  tools include UAPI: Sync linux/vhost.h with the kernel sources
  tools headers kvm s390: Sync headers with the kernel sources
  tools headers UAPI: Sync linux/kvm.h with the kernel sources
  tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
  tools headers cpufeatures: Sync with the kernel sources
  tools headers UAPI: Sync linux/fscrypt.h with the kernel sources
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  perf beauty: Update copy of linux/socket.h with the kernel sources
  perf cpumap: Fix alignment for masks in event encoding
  perf cpumap: Compute mask size in constant time
  perf cpumap: Synthetic events and const/static
  perf cpumap: Const map for max()
2022-08-20 14:46:05 -07:00
Linus Torvalds
cc1807b915 s390 updates for 6.0-rc2
- Fix a KVM crash on z12 and older machines caused by a wrong
   assumption that Query AP Configuration Information is always
   available.
 
 - Lower severity of excessive Hypervisor filesystem error messages
   when booting under KVM.
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Merge tag 's390-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Alexander Gordeev:

 - Fix a KVM crash on z12 and older machines caused by a wrong
   assumption that Query AP Configuration Information is always
   available.

 - Lower severity of excessive Hypervisor filesystem error messages
   when booting under KVM.

* tag 's390-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/ap: fix crash on older machines based on QCI info missing
  s390/hypfs: avoid error message under KVM
2022-08-20 11:29:01 -07:00
Linus Torvalds
32dd68f110 powerpc fixes for 6.0 #3
- Fix atomic sleep warnings at boot due to get_phb_number() taking a mutex with a
    spinlock held on some machines.
 
  - Add missing PMU selftests to .gitignores.
 
 Thanks to: Guenter Roeck, Russell Currey.
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Merge tag 'powerpc-6.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix atomic sleep warnings at boot due to get_phb_number() taking a
   mutex with a spinlock held on some machines.

 - Add missing PMU selftests to .gitignores.

Thanks to Guenter Roeck and Russell Currey.

* tag 'powerpc-6.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  selftests/powerpc: Add missing PMU selftests to .gitignores
  powerpc/pci: Fix get_phb_number() locking
2022-08-20 11:20:37 -07:00
Linus Torvalds
f31c32efd5 v6.0 first rc pull request
A few minor fixes:
  - Fix buffer management in SRP to correct a regression with the login
    authentication feature from v5.17
 
  - Don't iterate over non-present ports in mlx5
 
  - Fix an error introduced by the foritify work in cxgb4
 
  - Two bug fixes for the recently merged ERDMA driver
 
  - Unbreak RDMA dmabuf support, a regresion from v5.19
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "A few minor fixes:

   - Fix buffer management in SRP to correct a regression with the login
     authentication feature from v5.17

   - Don't iterate over non-present ports in mlx5

   - Fix an error introduced by the foritify work in cxgb4

   - Two bug fixes for the recently merged ERDMA driver

   - Unbreak RDMA dmabuf support, a regresion from v5.19"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA: Handle the return code from dma_resv_wait_timeout() properly
  RDMA/erdma: Correct the max_qp and max_cq capacities of the device
  RDMA/erdma: Using the key in FMR WR instead of MR structure
  RDMA/cxgb4: fix accept failure due to increased cpl_t5_pass_accept_rpl size
  RDMA/mlx5: Use the proper number of ports
  IB/iser: Fix login with authentication
2022-08-20 10:49:02 -07:00
Guru Das Srinagesh
4be72c1b9f scripts/clang-tools: Remove DeprecatedOrUnsafeBufferHandling check
This `clang-analyzer` check flags the use of memset(), suggesting a more
secure version of the API, such as memset_s(), which does not exist in
the kernel:

  warning: Call to function 'memset' is insecure as it does not provide
  security checks introduced in the C11 standard. Replace with analogous
  functions that support length arguments or provides boundary checks such
  as 'memset_s' in case of C11
  [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling]

Signed-off-by: Guru Das Srinagesh <quic_gurus@quicinc.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-21 02:47:49 +09:00
Masahiro Yamada
113147510b kbuild: fix the modules order between drivers and libs
Commit b2c8855491 ("kbuild: update modules.order only when contained
modules are updated") accidentally changed the modules order.

Prior to that commit, the modules order was determined based on
vmlinux-dirs, which lists core-y/m, drivers-y/m, libs-y/m, in this order.

Now, subdir-modorder lists them in a different order: core-y/m, libs-y/m,
drivers-y/m.

Presumably, there was no practical issue because the modules in drivers
and libs are orthogonal, but there is no reason to have this distortion.

Get back to the original order.

Fixes: b2c8855491 ("kbuild: update modules.order only when contained modules are updated")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-21 02:47:49 +09:00
Nathan Chancellor
370655bc18 scripts/Makefile.extrawarn: Do not disable clang's -Wformat-zero-length
There are no instances of this warning in the tree across several
difference architectures and configurations. This was added by
commit 26ea6bb1fe ("kbuild, LLVMLinux: Supress warnings unless W=1-3")
back in 2014, where it might have been necessary, but there are no
instances of it now so stop disabling it to increase warning coverage
for clang.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-21 02:47:48 +09:00
Jiri Slaby
0df499eaf3 kbuild: dummy-tools: pretend we understand __LONG_DOUBLE_128__
There is a test in powerpc's Kconfig which checks __LONG_DOUBLE_128__
and sets CONFIG_PPC_LONG_DOUBLE_128 if it is understood by the compiler.

We currently don't handle it, so this results in PPC_LONG_DOUBLE_128 not
being in super-config generated by dummy-tools. So take this into
account in the gcc script and preprocess __LONG_DOUBLE_128__ as "1".

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-21 02:47:48 +09:00
Masahiro Yamada
5b8a9a8fd1 modpost: fix module versioning when a symbol lacks valid CRC
Since commit 7b4537199a ("kbuild: link symbol CRCs at final link,
removing CONFIG_MODULE_REL_CRCS"), module versioning is broken on
some architectures. Loading a module fails with "disagrees about
version of symbol module_layout".

On such architectures (e.g. ARCH=sparc build with sparc64_defconfig),
modpost shows a warning, like follows:

  WARNING: modpost: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
  Is "_mcount" prototyped in <asm/asm-prototypes.h>?

Previously, it was a harmless warning (CRC check was just skipped),
but now wrong CRCs are used for comparison because invalid CRCs are
just skipped.

  $ sparc64-linux-gnu-nm -n vmlinux
    [snip]
  0000000000c2cea0 r __ksymtab__kstrtol
  0000000000c2ceb8 r __ksymtab__kstrtoul
  0000000000c2ced0 r __ksymtab__local_bh_enable
  0000000000c2cee8 r __ksymtab__mcount
  0000000000c2cf00 r __ksymtab__printk
  0000000000c2cf18 r __ksymtab__raw_read_lock
  0000000000c2cf30 r __ksymtab__raw_read_lock_bh
    [snip]
  0000000000c53b34 D __crc__kstrtol
  0000000000c53b38 D __crc__kstrtoul
  0000000000c53b3c D __crc__local_bh_enable
  0000000000c53b40 D __crc__printk
  0000000000c53b44 D __crc__raw_read_lock
  0000000000c53b48 D __crc__raw_read_lock_bh

Please notice __crc__mcount is missing here.

When the module subsystem looks up a CRC that comes after, it results
in reading out a wrong address. For example, when __crc__printk is
needed, the module subsystem reads 0xc53b44 instead of 0xc53b40.

All CRC entries must be output for correct index accessing. Invalid
CRCs will be unused, but are needed to keep the one-to-one mapping
between __ksymtab_* and __crc_*.

The best is to fix all modpost warnings, but several warnings are still
remaining on less popular architectures.

Fixes: 7b4537199a ("kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS")
Reported-by: matoro <matoro_mailinglist_kernel@matoro.tk>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: matoro <matoro_mailinglist_kernel@matoro.tk>
2022-08-21 02:47:36 +09:00
Linus Torvalds
b9bce6e553 block-6.0-2022-08-19
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Merge tag 'block-6.0-2022-08-19' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A few fixes that should go into this release:

   - Small series of patches for ublk (ZiyangZhang)

   - Remove dead function (Yu)

   - Fix for running a block queue in case of resource starvation
     (Yufen)"

* tag 'block-6.0-2022-08-19' of git://git.kernel.dk/linux-block:
  blk-mq: run queue no matter whether the request is the last request
  blk-mq: remove unused function blk_mq_queue_stopped()
  ublk_drv: do not add a re-issued request aborted previously to ioucmd's task_work
  ublk_drv: update comment for __ublk_fail_req()
  ublk_drv: check ubq_daemon_is_dying() in __ublk_rq_task_work()
  ublk_drv: update iod->addr for UBLK_IO_NEED_GET_DATA
2022-08-20 10:17:05 -07:00
Linus Torvalds
beaf139709 io_uring-6.0-2022-08-19
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Merge tag 'io_uring-6.0-2022-08-19' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "A few fixes for regressions in this cycle:

   - Two instances of using the wrong "has async data" helper (Pavel)

   - Fixup zero-copy address import (Pavel)

   - Bump zero-copy notification slot limit (Pavel)"

* tag 'io_uring-6.0-2022-08-19' of git://git.kernel.dk/linux-block:
  io_uring/net: use right helpers for async_data
  io_uring/notif: raise limit on notification slots
  io_uring/net: improve zc addr import error handling
  io_uring/net: use right helpers for async recycle
2022-08-20 09:49:22 -07:00
Linus Torvalds
044610f8e4 ATA fixes for 6.0-rc2
* Add a missing command name definition for ata_get_cmd_name(), from me.
 
 * A fix to address a performance regression due to the default max_sectors queue limit for ATA devices connected
   to AHCI adapters being too small, from John.
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Merge tag 'ata-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ATA fixes from Damien Le Moal:

 - Add a missing command name definition for ata_get_cmd_name(), from
   me.

 - A fix to address a performance regression due to the default
   max_sectors queue limit for ATA devices connected to AHCI adapters
   being too small, from John.

* tag 'ata-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata: libata: Set __ATA_BASE_SHT max_sectors
  ata: libata-eh: Add missing command name
2022-08-20 09:43:45 -07:00
Linus Torvalds
4d099c3329 MMC host:
- meson-gx: Fix error handling in ->probe()
  - mtk-sd: Fix a command problem when using cqe off/disable
  - pxamci: Fix error handling in ->probe()
  - sdhci-of-dwcmshc: Fix broken support for the BlueField-3 variant
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Merge tag 'mmc-v6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC host fixes from Ulf Hansson:

 - meson-gx: Fix error handling in ->probe()

 - mtk-sd: Fix a command problem when using cqe off/disable

 - pxamci: Fix error handling in ->probe()

 - sdhci-of-dwcmshc: Fix broken support for the BlueField-3 variant

* tag 'mmc-v6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-of-dwcmshc: Re-enable support for the BlueField-3 SoC
  mmc: meson-gx: Fix an error handling path in meson_mmc_probe()
  mmc: mtk-sd: Clear interrupts when cqe off/disable
  mmc: pxamci: Fix another error handling path in pxamci_probe()
  mmc: pxamci: Fix an error handling path in pxamci_probe()
2022-08-20 09:39:00 -07:00
John Garry
a357f7b458 ata: libata: Set __ATA_BASE_SHT max_sectors
Commit 0568e61225 ("ata: libata-scsi: cap ata_device->max_sectors
according to shost->max_sectors") inadvertently capped the max_sectors
value for some SATA disks to a value which is lower than we would want.

For a device which supports LBA48, we would previously have request queue
max_sectors_kb and max_hw_sectors_kb values of 1280 and 32767 respectively.

For AHCI controllers, the value chosen for shost max sectors comes from
the minimum of the SCSI host default max sectors in
SCSI_DEFAULT_MAX_SECTORS (1024) and the shost DMA device mapping limit.

This means that we would now set the max_sectors_kb and max_hw_sectors_kb
values for a disk which supports LBA48 at 512, ignoring DMA mapping limit.

As report by Oliver at [0], this caused a performance regression.

Fix by picking a large enough max sectors value for ATA host controllers
such that we don't needlessly reduce max_sectors_kb for LBA48 disks.

[0] https://lore.kernel.org/linux-ide/YvsGbidf3na5FpGb@xsang-OptiPlex-9020/T/#m22d9fc5ad15af66066dd9fecf3d50f1b1ef11da3

Fixes: 0568e61225 ("ata: libata-scsi: cap ata_device->max_sectors according to shost->max_sectors")
Reported-by: Oliver Sang <oliver.sang@intel.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
2022-08-21 01:29:50 +09:00
Linus Torvalds
50cd95ac46 execve fix for v6.0-rc2
- Replace remaining kmap() uses with kmap_local_page() (Fabio M. De Francesco)
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Merge tag 'execve-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull execve fix from Kees Cook:

 - Replace remaining kmap() uses with kmap_local_page() (Fabio M. De
   Francesco)

* tag 'execve-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  exec: Replace kmap{,_atomic}() with kmap_local_page()
2022-08-19 14:02:24 -07:00
Linus Torvalds
e45c890140 hardening fixes for v6.0-rc2
- Also undef LATENT_ENTROPY_PLUGIN for per-file disabling (Andrew Donnellan)
 
 - Return EFAULT on copy_from_user() failures in LoadPin (Kees Cook)
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Merge tag 'hardening-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening fixes from Kees Cook:

 - Also undef LATENT_ENTROPY_PLUGIN for per-file disabling (Andrew
   Donnellan)

 - Return EFAULT on copy_from_user() failures in LoadPin (Kees Cook)

* tag 'hardening-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file
  LoadPin: Return EFAULT on copy_from_user() failures
2022-08-19 13:56:14 -07:00
Linus Torvalds
8fd00059cc RISC-V Fixes for 6.0-rc2
* A fix to make the ISA extension static keys writable after init.  This
   manifests at least as a crash when loading modules (including KVM).
 * A fixup for a build warning related to a poorly formed comment in our
   perf driver.
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Merge tag 'riscv-for-linus-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - A fix to make the ISA extension static keys writable after init. This
   manifests at least as a crash when loading modules (including KVM).

 - A fixup for a build warning related to a poorly formed comment in our
   perf driver.

* tag 'riscv-for-linus-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  perf: riscv legacy: fix kerneldoc comment warning
  riscv: Ensure isa-ext static keys are writable
2022-08-19 13:49:07 -07:00
Linus Torvalds
ca052cfd6e ARM:
* Fix unexpected sign extension of KVM_ARM_DEVICE_ID_MASK
 
 * Tidy-up handling of AArch32 on asymmetric systems
 
 x86:
 
 * Fix "missing ENDBR" BUG for fastop functions
 
 Generic:
 
 * Some cleanup and static analyzer patches
 
 * More fixes to KVM_CREATE_VM unwind paths
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "ARM:

   - Fix unexpected sign extension of KVM_ARM_DEVICE_ID_MASK

   - Tidy-up handling of AArch32 on asymmetric systems

  x86:

   - Fix 'missing ENDBR' BUG for fastop functions

  Generic:

   - Some cleanup and static analyzer patches

   - More fixes to KVM_CREATE_VM unwind paths"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Drop unnecessary initialization of "ops" in kvm_ioctl_create_device()
  KVM: Drop unnecessary initialization of "npages" in hva_to_pfn_slow()
  x86/kvm: Fix "missing ENDBR" BUG for fastop functions
  x86/kvm: Simplify FOP_SETCC()
  x86/ibt, objtool: Add IBT_NOSEAL()
  KVM: Rename mmu_notifier_* to mmu_invalidate_*
  KVM: Rename KVM_PRIVATE_MEM_SLOTS to KVM_INTERNAL_MEM_SLOTS
  KVM: MIPS: remove unnecessary definition of KVM_PRIVATE_MEM_SLOTS
  KVM: Move coalesced MMIO initialization (back) into kvm_create_vm()
  KVM: Unconditionally get a ref to /dev/kvm module when creating a VM
  KVM: Properly unwind VM creation if creating debugfs fails
  KVM: arm64: Reject 32bit user PSTATE on asymmetric systems
  KVM: arm64: Treat PMCR_EL1.LC as RES1 on asymmetric systems
  KVM: arm64: Fix compile error due to sign extension
2022-08-19 13:40:11 -07:00
Linus Torvalds
42c54d5491 for-6.0-rc1-tag
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Merge tag 'for-6.0-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "A few short fixes and a lockdep warning fix (needs moving some code):

   - tree-log replay fixes:
      - fix error handling when looking up extent refs
      - fix warning when setting inode number of links

   - relocation fixes:
      - reset block group read-only status when relocation fails
      - unset control structure if transaction fails when starting
        to process a block group
      - add lockdep annotations to fix a warning during relocation
        where blocks temporarily belong to another tree and can lead
        to reversed dependencies

   - tree-checker verifies that extent items don't overlap"

* tag 'for-6.0-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: tree-checker: check for overlapping extent items
  btrfs: fix warning during log replay when bumping inode link count
  btrfs: fix lost error handling when looking up extended ref on log replay
  btrfs: fix lockdep splat with reloc root extent buffers
  btrfs: move lockdep class helpers to locking.c
  btrfs: unset reloc control if transaction commit fails in prepare_to_relocate()
  btrfs: reset RO counter on block group if we fail to relocate
2022-08-19 13:33:48 -07:00
Linus Torvalds
a3a78b6332 4 ksmbd server fixes
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Merge tag '5.20-rc2-ksmbd-smb3-server-fixes' of git://git.samba.org/ksmbd

Pull ksmbd server fixes from Steve French:

 - important sparse file fix

 - allocation size fix

 - fix incorrect rc on bad share

 - share config fix

* tag '5.20-rc2-ksmbd-smb3-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: don't remove dos attribute xattr on O_TRUNC open
  ksmbd: remove unnecessary generic_fillattr in smb2_open
  ksmbd: request update to stale share config
  ksmbd: return STATUS_BAD_NETWORK_NAME error status if share is not configured
2022-08-19 13:26:52 -07:00
Namhyung Kim
f52679b788 perf tools: Support reading PERF_FORMAT_LOST
The recent kernel added lost count can be read from either read(2) or
ring buffer data with PERF_SAMPLE_READ.  As it's a variable length data
we need to access it according to the format info.

But for perf tools use cases, PERF_FORMAT_ID is always set.  So we can
only check PERF_FORMAT_LOST bit to determine the data format.

Add sample_read_value_size() and next_sample_read_value() helpers to
make it a bit easier to access.  Use them in all places where it reads
the struct sample_read_value.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220819003644.508916-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:56:56 -03:00
Namhyung Kim
6d395a5135 libperf: Add a test case for read formats
It checks a various combination of the read format settings and verify
it return the value in a proper position.  The test uses task-clock
software events to guarantee it's always active and sets enabled/running
time.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220819003644.508916-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:56:44 -03:00
Namhyung Kim
89e3106fa2 libperf: Handle read format in perf_evsel__read()
The perf_counts_values should be increased to read the new lost data.
Also adjust values after read according the read format.

This supports PERF_FORMAT_GROUP which has a different data format but
it's only available for leader events.  Currently it doesn't have an API
to read sibling (member) events in the group.  But users may read the
sibling event directly.

Also reading from mmap would be disabled when the read format has ID or
LOST bit as it's not exposed via mmap.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220819003644.508916-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:56:27 -03:00
Namhyung Kim
65ba872a69 tools headers UAPI: Sync linux/perf_event.h with the kernel sources
To pick the trivial change in:

  119a784c81 ("perf/core: Add a new read format to get a number of lost samples")

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220819003644.508916-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:56:10 -03:00
Arnaldo Carvalho de Melo
e5bc0deae5 tools headers UAPI: Sync x86's asm/kvm.h with the kernel sources
To pick the changes in:

  43bb9e000e ("KVM: x86: Tweak name of MONITOR/MWAIT #UD quirk to make it #UD specific")
  94dfc73e7c ("treewide: uapi: Replace zero-length arrays with flexible-array members")
  bfbcc81bb8 ("KVM: x86: Add a quirk for KVM's "MONITOR/MWAIT are NOPs!" behavior")
  b172862241 ("KVM: x86: PIT: Preserve state of speaker port data bit")
  ed2351174e ("KVM: x86: Extend KVM_{G,S}ET_VCPU_EVENTS to support pending triple fault")

That just rebuilds kvm-stat.c on x86, no change in functionality.

This silences these perf build warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/kvm.h' differs from latest version at 'arch/x86/include/uapi/asm/kvm.h'
  diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h

Cc: Chenyi Qiang <chenyi.qiang@intel.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paul Durrant <pdurrant@amazon.com>
Link: https://lore.kernel.org/lkml/Yv6OMPKYqYSbUxwZ@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:34 -03:00
Arnaldo Carvalho de Melo
eea085d114 tools headers UAPI: Sync KVM's vmx.h header with the kernel sources
To pick the changes in:

  2f4073e08f ("KVM: VMX: Enable Notify VM exit")

That makes 'perf kvm-stat' aware of this new NOTIFY exit reason, thus
addressing the following perf build warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/vmx.h' differs from latest version at 'arch/x86/include/uapi/asm/vmx.h'
  diff -u tools/arch/x86/include/uapi/asm/vmx.h arch/x86/include/uapi/asm/vmx.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Tao Xu <tao3.xu@intel.com>
Link: http://lore.kernel.org/lkml/Yv6LavXMZ+njijpq@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-19 15:30:34 -03:00