We should use unsigned long long rather than loff_t to avoid
overflow in ext4_max_bitmap_size() for comparison before returning.
w/o this patch sbi->s_bitmap_maxbytes was becoming a negative
value due to overflow of upper_limit (with has_huge_files as true)
Below is a quick test to trigger it on a 64KB pagesize system.
sudo mkfs.ext4 -b 65536 -O ^has_extents,^64bit /dev/loop2
sudo mount /dev/loop2 /mnt
sudo echo "hello" > /mnt/hello -> This will error out with
"echo: write error: File too large"
Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Link: https://lore.kernel.org/r/594f409e2c543e90fd836b78188dfa5c575065ba.1622867594.git.riteshh@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
When ext4_insert_delayed block receives and recovers from an error from
ext4_es_insert_delayed_block(), e.g., ENOMEM, it does not release the
space it has reserved for that block insertion as it should. One effect
of this bug is that s_dirtyclusters_counter is not decremented and
remains incorrectly elevated until the file system has been unmounted.
This can result in premature ENOSPC returns and apparent loss of free
space.
Another effect of this bug is that
/sys/fs/ext4/<dev>/delayed_allocation_blocks can remain non-zero even
after syncfs has been executed on the filesystem.
Besides, add check for s_dirtyclusters_counter when inode is going to be
evicted and freed. s_dirtyclusters_counter can still keep non-zero until
inode is written back in .evict_inode(), and thus the check is delayed
to .destroy_inode().
Fixes: 51865fda28 ("ext4: let ext4 maintain extent status tree")
Cc: stable@kernel.org
Suggested-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Eric Whitney <enwlinux@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/20210823061358.84473-1-jefflexu@linux.alibaba.com
Now EXT4_FC_TAG_ADD_RANGE uses ext4_extent to track the
newly-added blocks, but the limit on the max value of
ee_len field is ignored, and it can lead to BUG_ON as
shown below when running command "fallocate -l 128M file"
on a fast_commit-enabled fs:
kernel BUG at fs/ext4/ext4_extents.h:199!
invalid opcode: 0000 [#1] SMP PTI
CPU: 3 PID: 624 Comm: fallocate Not tainted 5.14.0-rc6+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
RIP: 0010:ext4_fc_write_inode_data+0x1f3/0x200
Call Trace:
? ext4_fc_write_inode+0xf2/0x150
ext4_fc_commit+0x93b/0xa00
? ext4_fallocate+0x1ad/0x10d0
ext4_sync_file+0x157/0x340
? ext4_sync_file+0x157/0x340
vfs_fsync_range+0x49/0x80
do_fsync+0x3d/0x70
__x64_sys_fsync+0x14/0x20
do_syscall_64+0x3b/0xc0
entry_SYSCALL_64_after_hwframe+0x44/0xae
Simply fixing it by limiting the number of blocks
in one EXT4_FC_TAG_ADD_RANGE TLV.
Fixes: aa75f4d3da ("ext4: main fast-commit commit path")
Cc: stable@kernel.org
Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/20210820044505.474318-1-houtao1@huawei.com
The kmalloc() does not have a NULL check. This code can be re-written
slightly cleaner to just use the kstrdup().
Fixes: 265fd1991c ("ksmbd: use LOOKUP_BENEATH to prevent the out of share access")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Acked-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
and bpf.
Current release - regressions:
- bpf, cgroup: assign cgroup in cgroup_sk_alloc when called from
interrupt
- mdio: revert mechanical patches which broke handling of optional
resources
- dev_addr_list: prevent address duplication
Previous releases - regressions:
- sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb
(NULL deref)
- Revert "mac80211: do not use low data rates for data frames with no
ack flag", fixing broadcast transmissions
- mac80211: fix use-after-free in CCMP/GCMP RX
- netfilter: include zone id in tuple hash again, minimize collisions
- netfilter: nf_tables: unlink table before deleting it (race -> UAF)
- netfilter: log: work around missing softdep backend module
- mptcp: don't return sockets in foreign netns
- sched: flower: protect fl_walk() with rcu (race -> UAF)
- ixgbe: fix NULL pointer dereference in ixgbe_xdp_setup
- smsc95xx: fix stalled rx after link change
- enetc: fix the incorrect clearing of IF_MODE bits
- ipv4: fix rtnexthop len when RTA_FLOW is present
- dsa: mv88e6xxx: 6161: use correct MAX MTU config method for this SKU
- e100: fix length calculation & buffer overrun in ethtool::get_regs
Previous releases - always broken:
- mac80211: fix using stale frag_tail skb pointer in A-MSDU tx
- mac80211: drop frames from invalid MAC address in ad-hoc mode
- af_unix: fix races in sk_peer_pid and sk_peer_cred accesses
(race -> UAF)
- bpf, x86: Fix bpf mapping of atomic fetch implementation
- bpf: handle return value of BPF_PROG_TYPE_STRUCT_OPS prog
- netfilter: ip6_tables: zero-initialize fragment offset
- mhi: fix error path in mhi_net_newlink
- af_unix: return errno instead of NULL in unix_create1() when
over the fs.file-max limit
Misc:
- bpf: exempt CAP_BPF from checks against bpf_jit_limit
- netfilter: conntrack: make max chain length random, prevent guessing
buckets by attackers
- netfilter: nf_nat_masquerade: make async masq_inet6_event handling
generic, defer conntrack walk to work queue (prevent hogging RTNL lock)
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes, including fixes from mac80211, netfilter and bpf.
Current release - regressions:
- bpf, cgroup: assign cgroup in cgroup_sk_alloc when called from
interrupt
- mdio: revert mechanical patches which broke handling of optional
resources
- dev_addr_list: prevent address duplication
Previous releases - regressions:
- sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb
(NULL deref)
- Revert "mac80211: do not use low data rates for data frames with no
ack flag", fixing broadcast transmissions
- mac80211: fix use-after-free in CCMP/GCMP RX
- netfilter: include zone id in tuple hash again, minimize collisions
- netfilter: nf_tables: unlink table before deleting it (race -> UAF)
- netfilter: log: work around missing softdep backend module
- mptcp: don't return sockets in foreign netns
- sched: flower: protect fl_walk() with rcu (race -> UAF)
- ixgbe: fix NULL pointer dereference in ixgbe_xdp_setup
- smsc95xx: fix stalled rx after link change
- enetc: fix the incorrect clearing of IF_MODE bits
- ipv4: fix rtnexthop len when RTA_FLOW is present
- dsa: mv88e6xxx: 6161: use correct MAX MTU config method for this
SKU
- e100: fix length calculation & buffer overrun in ethtool::get_regs
Previous releases - always broken:
- mac80211: fix using stale frag_tail skb pointer in A-MSDU tx
- mac80211: drop frames from invalid MAC address in ad-hoc mode
- af_unix: fix races in sk_peer_pid and sk_peer_cred accesses (race
-> UAF)
- bpf, x86: Fix bpf mapping of atomic fetch implementation
- bpf: handle return value of BPF_PROG_TYPE_STRUCT_OPS prog
- netfilter: ip6_tables: zero-initialize fragment offset
- mhi: fix error path in mhi_net_newlink
- af_unix: return errno instead of NULL in unix_create1() when over
the fs.file-max limit
Misc:
- bpf: exempt CAP_BPF from checks against bpf_jit_limit
- netfilter: conntrack: make max chain length random, prevent
guessing buckets by attackers
- netfilter: nf_nat_masquerade: make async masq_inet6_event handling
generic, defer conntrack walk to work queue (prevent hogging RTNL
lock)"
* tag 'net-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (77 commits)
af_unix: fix races in sk_peer_pid and sk_peer_cred accesses
net: stmmac: fix EEE init issue when paired with EEE capable PHYs
net: dev_addr_list: handle first address in __hw_addr_add_ex
net: sched: flower: protect fl_walk() with rcu
net: introduce and use lock_sock_fast_nested()
net: phy: bcm7xxx: Fixed indirect MMD operations
net: hns3: disable firmware compatible features when uninstall PF
net: hns3: fix always enable rx vlan filter problem after selftest
net: hns3: PF enable promisc for VF when mac table is overflow
net: hns3: fix show wrong state when add existing uc mac address
net: hns3: fix mixed flag HCLGE_FLAG_MQPRIO_ENABLE and HCLGE_FLAG_DCB_ENABLE
net: hns3: don't rollback when destroy mqprio fail
net: hns3: remove tc enable checking
net: hns3: do not allow call hns3_nic_net_open repeatedly
ixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup
net: bridge: mcast: Associate the seqcount with its protecting lock.
net: mdio-ipq4019: Fix the error for an optional regs resource
net: hns3: fix hclge_dbg_dump_tm_pg() stack usage
net: mdio: mscc-miim: Fix the mdio controller
af_unix: Return errno instead of NULL in unix_create1().
...
- don't ignore I2C errors in gpio-pca953x
- update MAINTAINERS entries for Mun Yew Tham and myself
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Merge tag 'gpio-fixes-for-v5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
"A single fix for the gpio-pca953x driver and two commits updating the
MAINTAINERS entries for Mun Yew Tham (GPIO specific) and myself
(treewide after a change in professional situation).
Summary:
- don't ignore I2C errors in gpio-pca953x
- update MAINTAINERS entries for Mun Yew Tham and myself"
* tag 'gpio-fixes-for-v5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
MAINTAINERS: Update Mun Yew Tham as Altera Pio Driver maintainer
MAINTAINERS: update my email address
gpio: pca953x: do not ignore i2c errors
Several core bugs and a batch of driver bug fixes:
- Fix compilation problems in qib and hfi1
- Do not corrupt the joined multicast group state when using SEND_ONLY
- Several CMA bugs, a reference leak for listening and two syzkaller
crashers
- Various bug fixes for irdma
- Fix a Sleeping while atomic bug in usnic
- Properly sanitize kernel pointers in dmesg
- Two bugs in the 64b CQE support for hns
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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:
"Not much too exciting here, although two syzkaller bugs that seem to
have 9 lives may have finally been squashed.
Several core bugs and a batch of driver bug fixes:
- Fix compilation problems in qib and hfi1
- Do not corrupt the joined multicast group state when using
SEND_ONLY
- Several CMA bugs, a reference leak for listening and two syzkaller
crashers
- Various bug fixes for irdma
- Fix a Sleeping while atomic bug in usnic
- Properly sanitize kernel pointers in dmesg
- Two bugs in the 64b CQE support for hns"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/hns: Add the check of the CQE size of the user space
RDMA/hns: Fix the size setting error when copying CQE in clean_cq()
RDMA/hfi1: Fix kernel pointer leak
RDMA/usnic: Lock VF with mutex instead of spinlock
RDMA/hns: Work around broken constant propagation in gcc 8
RDMA/cma: Ensure rdma_addr_cancel() happens before issuing more requests
RDMA/cma: Do not change route.addr.src_addr.ss_family
RDMA/irdma: Report correct WC error when there are MW bind errors
RDMA/irdma: Report correct WC error when transport retry counter is exceeded
RDMA/irdma: Validate number of CQ entries on create CQ
RDMA/irdma: Skip CQP ring during a reset
MAINTAINERS: Update Broadcom RDMA maintainers
RDMA/cma: Fix listener leak in rdma_cma_listen_on_all() failure
IB/cma: Do not send IGMP leaves for sendonly Multicast groups
IB/qib: Fix clang confusion of NULL pointer comparison
Validate that the transform and smb request headers are present
before checking OriginalMessageSize and SessionId fields.
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Ralph Böhme <slow@samba.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Tom Talpey <tom@talpey.com>
Acked-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Add buffer validation for SMB2_CREATE_CONTEXT.
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Reviewed-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This patch add validation to check request buffer check in smb2
negotiate and fix null pointer deferencing oops in smb3_preauth_hash_rsp()
that found from manual test.
Cc: Tom Talpey <tom@talpey.com>
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Ralph Böhme <slow@samba.org>
Cc: Hyunchul Lee <hyc.lee@gmail.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Add buffer validation in smb2_set_info, and remove unused variable
in set_file_basic_info. and smb2_set_info infolevel functions take
structure pointer argument.
Cc: Tom Talpey <tom@talpey.com>
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Ralph Böhme <slow@samba.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Acked-by: Hyunchul Lee <hyc.lee@gmail.com>
Reviewed-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Use correct basic info level in set/get_file_basic_info().
Reviewed-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Jann Horn reported that SO_PEERCRED and SO_PEERGROUPS implementations
are racy, as af_unix can concurrently change sk_peer_pid and sk_peer_cred.
In order to fix this issue, this patch adds a new spinlock that needs
to be used whenever these fields are read or written.
Jann also pointed out that l2cap_sock_get_peer_pid_cb() is currently
reading sk->sk_peer_pid which makes no sense, as this field
is only possibly set by AF_UNIX sockets.
We will have to clean this in a separate patch.
This could be done by reverting b48596d1dc "Bluetooth: L2CAP: Add get_peer_pid callback"
or implementing what was truly expected.
Fixes: 109f6e39fa ("af_unix: Allow SO_PEERCRED to work across namespaces.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Jann Horn <jannh@google.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
When STMMAC is paired with Energy-Efficient Ethernet(EEE) capable PHY,
and the PHY is advertising EEE by default, we need to enable EEE on the
xPCS side too, instead of having user to manually trigger the enabling
config via ethtool.
Fixed this by adding xpcs_config_eee() call in stmmac_eee_init().
Fixes: 7617af3d1a ("net: pcs: Introducing support for DWC xpcs Energy Efficient Ethernet")
Cc: Michael Sit Wei Hong <michael.wei.hong.sit@intel.com>
Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
struct dev_addr_list is used for device addresses, unicast addresses
and multicast addresses. The first of those needs special handling
of the main address - netdev->dev_addr points directly the data
of the entry and drivers write to it freely, so we can't maintain
it in the rbtree (for now, at least, to be fixed in net-next).
Current work around sprinkles special handling of the first
address on the list throughout the code but it missed the case
where address is being added. First address will not be visible
during subsequent adds.
Syzbot found a warning where unicast addresses are modified
without holding the rtnl lock, tl;dr is that team generates
the same modification multiple times, not necessarily when
right locks are held.
In the repro we have:
macvlan -> team -> veth
macvlan adds a unicast address to the team. Team then pushes
that address down to its memebers (veths). Next something unrelated
makes team sync member addrs again, and because of the bug
the addr entries get duplicated in the veths. macvlan gets
removed, removes its addr from team which removes only one
of the duplicated addresses from veths. This removal is done
under rtnl. Next syzbot uses iptables to add a multicast addr
to team (which does not hold rtnl lock). Team syncs veth addrs,
but because veths' unicast list still has the duplicate it will
also get sync, even though this update is intended for mc addresses.
Again, uc address updates need rtnl lock, boom.
Reported-by: syzbot+7a2ab2cdc14d134de553@syzkaller.appspotmail.com
Fixes: 406f42fa0d ("net-next: When a bond have a massive amount of VLANs with IPv6 addresses, performance of changing link state, attaching a VRF, changing an IPv6 address, etc. go down dramtically.")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rework the CPU selection in the migration worker to ensure the specified
number of migrations are performed when the test iteslf is affined to a
subset of CPUs. The existing logic skips iterations if the target CPU is
not in the original set of possible CPUs, which causes the test to fail
if too many iterations are skipped.
==== Test Assertion Failure ====
rseq_test.c:228: i > (NR_TASK_MIGRATIONS / 2)
pid=10127 tid=10127 errno=4 - Interrupted system call
1 0x00000000004018e5: main at rseq_test.c:227
2 0x00007fcc8fc66bf6: ?? ??:0
3 0x0000000000401959: _start at ??:?
Only performed 4 KVM_RUNs, task stalled too much?
Calculate the min/max possible CPUs as a cheap "best effort" to avoid
high runtimes when the test is affined to a small percentage of CPUs.
Alternatively, a list or xarray of the possible CPUs could be used, but
even in a horrendously inefficient setup, such optimizations are not
needed because the runtime is completely dominated by the cost of
migrating the task, and the absolute runtime is well under a minute in
even truly absurd setups, e.g. running on a subset of vCPUs in a VM that
is heavily overcommited (16 vCPUs per pCPU).
Fixes: 61e52f1630 ("KVM: selftests: Add a test for KVM_RUN+rseq to detect task migration bugs")
Reported-by: Dongli Zhang <dongli.zhang@oracle.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210929234112.1862848-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Check whether a CPUID entry's index is significant before checking for a
matching index to hack-a-fix an undefined behavior bug due to consuming
uninitialized data. RESET/INIT emulation uses kvm_cpuid() to retrieve
CPUID.0x1, which does _not_ have a significant index, and fails to
initialize the dummy variable that doubles as EBX/ECX/EDX output _and_
ECX, a.k.a. index, input.
Practically speaking, it's _extremely_ unlikely any compiler will yield
code that causes problems, as the compiler would need to inline the
kvm_cpuid() call to detect the uninitialized data, and intentionally hose
the kernel, e.g. insert ud2, instead of simply ignoring the result of
the index comparison.
Although the sketchy "dummy" pattern was introduced in SVM by commit
66f7b72e11 ("KVM: x86: Make register state after reset conform to
specification"), it wasn't actually broken until commit 7ff6c03503
("KVM: x86: Remove stateful CPUID handling") arbitrarily swapped the
order of operations such that "index" was checked before the significant
flag.
Avoid consuming uninitialized data by reverting to checking the flag
before the index purely so that the fix can be easily backported; the
offending RESET/INIT code has been refactored, moved, and consolidated
from vendor code to common x86 since the bug was introduced. A future
patch will directly address the bad RESET/INIT behavior.
The undefined behavior was detected by syzbot + KernelMemorySanitizer.
BUG: KMSAN: uninit-value in cpuid_entry2_find arch/x86/kvm/cpuid.c:68
BUG: KMSAN: uninit-value in kvm_find_cpuid_entry arch/x86/kvm/cpuid.c:1103
BUG: KMSAN: uninit-value in kvm_cpuid+0x456/0x28f0 arch/x86/kvm/cpuid.c:1183
cpuid_entry2_find arch/x86/kvm/cpuid.c:68 [inline]
kvm_find_cpuid_entry arch/x86/kvm/cpuid.c:1103 [inline]
kvm_cpuid+0x456/0x28f0 arch/x86/kvm/cpuid.c:1183
kvm_vcpu_reset+0x13fb/0x1c20 arch/x86/kvm/x86.c:10885
kvm_apic_accept_events+0x58f/0x8c0 arch/x86/kvm/lapic.c:2923
vcpu_enter_guest+0xfd2/0x6d80 arch/x86/kvm/x86.c:9534
vcpu_run+0x7f5/0x18d0 arch/x86/kvm/x86.c:9788
kvm_arch_vcpu_ioctl_run+0x245b/0x2d10 arch/x86/kvm/x86.c:10020
Local variable ----dummy@kvm_vcpu_reset created at:
kvm_vcpu_reset+0x1fb/0x1c20 arch/x86/kvm/x86.c:10812
kvm_apic_accept_events+0x58f/0x8c0 arch/x86/kvm/lapic.c:2923
Reported-by: syzbot+f3985126b746b3d59c9d@syzkaller.appspotmail.com
Reported-by: Alexander Potapenko <glider@google.com>
Fixes: 2a24be79b6 ("KVM: VMX: Set EDX at INIT with CPUID.0x1, Family-Model-Stepping")
Fixes: 7ff6c03503 ("KVM: x86: Remove stateful CPUID handling")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Message-Id: <20210929222426.1855730-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
hv_clock is preallocated to have only HVC_BOOT_ARRAY_SIZE (64) elements;
if the PTP_SYS_OFFSET_PRECISE ioctl is executed on vCPUs whose index is
64 of higher, retrieving the struct pvclock_vcpu_time_info pointer with
"src = &hv_clock[cpu].pvti" will result in an out-of-bounds access and
a wild pointer. Change it to "this_cpu_pvti()" which is guaranteed to
be valid.
Fixes: 95a3d4454b ("Switch kvmclock data to a PER_CPU variable")
Signed-off-by: Zelin Deng <zelin.deng@linux.alibaba.com>
Cc: <stable@vger.kernel.org>
Message-Id: <1632892429-101194-3-git-send-email-zelin.deng@linux.alibaba.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There're other modules might use hv_clock_per_cpu variable like ptp_kvm,
so move it into kvmclock.h and export the symbol to make it visiable to
other modules.
Signed-off-by: Zelin Deng <zelin.deng@linux.alibaba.com>
Cc: <stable@vger.kernel.org>
Message-Id: <1632892429-101194-2-git-send-email-zelin.deng@linux.alibaba.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
commit fad7cd3310 ("nbd: add the check to prevent overflow in
__nbd_ioctl()") raised an issue from the fallback helpers added in
commit f0907827a8 ("compiler.h: enable builtin overflow checkers and
add fallback code")
ERROR: modpost: "__divdi3" [drivers/block/nbd.ko] undefined!
As Stephen Rothwell notes:
The added check_mul_overflow() call is being passed 64 bit values.
COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW is not set for this build (see
include/linux/overflow.h).
Specifically, the helpers for checking whether the results of a
multiplication overflowed (__unsigned_mul_overflow,
__signed_add_overflow) use the division operator when
!COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW. This is problematic for 64b
operands on 32b hosts.
This was fixed upstream by
commit 76ae847497 ("Documentation: raise minimum supported version of
GCC to 5.1")
which is not suitable to be backported to stable.
Further, __builtin_mul_overflow() would emit a libcall to a
compiler-rt-only symbol when compiling with clang < 14 for 32b targets.
ld.lld: error: undefined symbol: __mulodi4
In order to keep stable buildable with GCC 4.9 and clang < 14, modify
struct nbd_config to instead track the number of bits of the block size;
reconstructing the block size using runtime checked shifts that are not
problematic for those compilers and in a ways that can be backported to
stable.
In nbd_set_size, we do validate that the value of blksize must be a
power of two (POT) and is in the range of [512, PAGE_SIZE] (both
inclusive).
This does modify the debugfs interface.
Cc: stable@vger.kernel.org
Cc: Arnd Bergmann <arnd@kernel.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Link: https://github.com/ClangBuiltLinux/linux/issues/1438
Link: https://lore.kernel.org/all/20210909182525.372ee687@canb.auug.org.au/
Link: https://lore.kernel.org/stable/CAHk-=whiQBofgis_rkniz8GBP9wZtSZdcDEffgSLO62BUGV3gg@mail.gmail.com/
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Reported-by: Nathan Chancellor <nathan@kernel.org>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Suggested-by: Kees Cook <keescook@chromium.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Suggested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Link: https://lore.kernel.org/r/20210920232533.4092046-1-ndesaulniers@google.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Remove insecure NTLMv1 authentication.
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Ralph Böhme <slow@samba.org>
Reviewed-by: Tom Talpey <tom@talpey.com>
Acked-by: Steve French <smfrench@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Update Altera Pio Driver maintainer's email from <joyce.ooi@intel.com> to <mun.yew.tham@intel.com>
Signed-off-by: Mun Yew Tham <mun.yew.tham@intel.com>
Acked-by: Joyce Ooi <joyce.ooi@intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Per gpio_chip interface, error shall be proparated to the caller.
Attempt to silent diagnostics by returning zero (as written in the
comment) is plain wrong, because the zero return can be interpreted by
the caller as the gpio value.
Cc: stable@vger.kernel.org
Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
It became a slightly large collection of changes, partly because
I've been off in the last weeks. Most of changes are small and
scattered while a bit big change is found in HD-audio Realtek
codec driver; it's a very device-specific fix that has been long
wanted, so I decided to pick up although it's in the middle RC.
Some highlights:
* A new guard ioctl for ALSA rawmidi API to avoid the misuse of
the new timestamp framing mode; it's for a regression fix
* HD-audio: a revert of the 5.15 change that might work badly,
new quirks for Lenovo Legion & co, a follow-up fix for CS8409
* ASoC: lots of SOF-related fixes, fsl component fixes, corrections of
mediatek drivers
* USB-audio: fix for the PM resume
* FireWire: oxfw and motu fixes
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Merge tag 'sound-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This became a slightly large collection of changes, partly because
I've been off in the last weeks. Most of changes are small and
scattered while a bit big change is found in HD-audio Realtek codec
driver; it's a very device-specific fix that has been long wanted, so
I decided to pick up although it's in the middle RC.
Some highlights:
- A new guard ioctl for ALSA rawmidi API to avoid the misuse of the
new timestamp framing mode; it's for a regression fix
- HD-audio: a revert of the 5.15 change that might work badly, new
quirks for Lenovo Legion & co, a follow-up fix for CS8409
- ASoC: lots of SOF-related fixes, fsl component fixes, corrections
of mediatek drivers
- USB-audio: fix for the PM resume
- FireWire: oxfw and motu fixes"
* tag 'sound-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (25 commits)
ALSA: pcsp: Make hrtimer forwarding more robust
ALSA: rawmidi: introduce SNDRV_RAWMIDI_IOCTL_USER_PVERSION
ALSA: firewire-motu: fix truncated bytes in message tracepoints
ASoC: SOF: trace: Omit error print when waking up trace sleepers
ASoC: mediatek: mt8195: remove wrong fixup assignment on HDMITX
ASoC: SOF: loader: Re-phrase the missing firmware error to avoid duplication
ASoC: SOF: loader: release_firmware() on load failure to avoid batching
ALSA: hda/cs8409: Setup Dolphin Headset Mic as Phantom Jack
ALSA: pcxhr: "fix" PCXHR_REG_TO_PORT definition
ASoC: SOF: imx: imx8m: Bar index is only valid for IRAM and SRAM types
ASoC: SOF: imx: imx8: Bar index is only valid for IRAM and SRAM types
ASoC: SOF: Fix DSP oops stack dump output contents
ALSA: hda/realtek: Quirks to enable speaker output for Lenovo Legion 7i 15IMHG05, Yoga 7i 14ITL5/15ITL5, and 13s Gen2 laptops.
ALSA: usb-audio: Unify mixer resume and reset_resume procedure
Revert "ALSA: hda: Drop workaround for a hang at shutdown again"
ALSA: oxfw: fix transmission method for Loud models based on OXFW971
ASoC: mediatek: common: handle NULL case in suspend/resume function
ASoC: fsl_xcvr: register platform component before registering cpu dai
ASoC: fsl_spdif: register platform component before registering cpu dai
ASoC: fsl_micfil: register platform component before registering cpu dai
...
Pull crypto fixes from Herbert Xu:
"This contains fixes for a resource leak in ccp as well as stack
corruption in x86/sm4"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: x86/sm4 - Fix frame pointer stack corruption
crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd()
When EEE support was added to the 28nm EPHY it was assumed that it would
be able to support the standard clause 45 over clause 22 register access
method. It turns out that the PHY does not support that, which is the
very reason for using the indirect shadow mode 2 bank 3 access method.
Implement {read,write}_mmd to allow the standard PHY library routines
pertaining to EEE querying and configuration to work correctly on these
PHYs. This forces us to implement a __phy_set_clr_bits() function that
does not grab the MDIO bus lock since the PHY driver's {read,write}_mmd
functions are always called with that lock held.
Fixes: 83ee102a69 ("net: phy: bcm7xxx: add support for 28nm EPHY")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Guangbin Huang says:
====================
net: hns3: add some fixes for -net
This series adds some fixes for the HNS3 ethernet driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, the firmware compatible features are enabled in PF driver
initialization process, but they are not disabled in PF driver
deinitialization process and firmware keeps these features in enabled
status.
In this case, if load an old PF driver (for example, in VM) which not
support the firmware compatible features, firmware will still send mailbox
message to PF when link status changed and PF will print
"un-supported mailbox message, code = 201".
To fix this problem, disable these firmware compatible features in PF
driver deinitialization process.
Fixes: ed8fb4b262 ("net: hns3: add link change event report")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, the rx vlan filter will always be disabled before selftest and
be enabled after selftest as the rx vlan filter feature is fixed on in
old device earlier than V3.
However, this feature is not fixed in some new devices and it can be
disabled by user. In this case, it is wrong if rx vlan filter is enabled
after selftest. So fix it.
Fixes: bcc26e8dc4 ("net: hns3: remove unused code in hns3_self_test()")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If unicast mac address table is full, and user add a new mac address, the
unicast promisc needs to be enabled for the new unicast mac address can be
used. So does the multicast promisc.
Now this feature has been implemented for PF, and VF should be implemented
too. When the mac table of VF is overflow, PF will enable promisc for this
VF.
Fixes: 1e6e76101f ("net: hns3: configure promisc mode for VF asynchronously")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, if function adds an existing unicast mac address, eventhough
driver will not add this address into hardware, but it will return 0 in
function hclge_add_uc_addr_common(). It will cause the state of this
unicast mac address is ACTIVE in driver, but it should be in TO-ADD state.
To fix this problem, function hclge_add_uc_addr_common() returns -EEXIST
if mac address is existing, and delete two error log to avoid printing
them all the time after this modification.
Fixes: 72110b5674 ("net: hns3: return 0 and print warning when hit duplicate MAC")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
HCLGE_FLAG_MQPRIO_ENABLE is supposed to set when enable
multiple TCs with tc mqprio, and HCLGE_FLAG_DCB_ENABLE is
supposed to set when enable multiple TCs with ets. But
the driver mixed the flags when updating the tm configuration.
Furtherly, PFC should be available when HCLGE_FLAG_MQPRIO_ENABLE
too, so remove the unnecessary limitation.
Fixes: 5a5c909174 ("net: hns3: add support for tc mqprio offload")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For destroy mqprio is irreversible in stack, so it's unnecessary
to rollback the tc configuration when destroy mqprio failed.
Otherwise, it may cause the configuration being inconsistent
between driver and netstack.
As the failure is usually caused by reset, and the driver will
restore the configuration after reset, so it can keep the
configuration being consistent between driver and hardware.
Fixes: 5a5c909174 ("net: hns3: add support for tc mqprio offload")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, in function hns3_nic_set_real_num_queue(), the
driver doesn't report the queue count and offset for disabled
tc. If user enables multiple TCs, but only maps user
priorities to partial of them, it may cause the queue range
of the unmapped TC being displayed abnormally.
Fix it by removing the tc enable checking, ensure the queue
count is not zero.
With this change, the tc_en is useless now, so remove it.
Fixes: a75a8efa00 ("net: hns3: Fix tc setup when netdev is first up")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The ixgbe driver currently generates a NULL pointer dereference with
some machine (online cpus < 63). This is due to the fact that the
maximum value of num_xdp_queues is nr_cpu_ids. Code is in
"ixgbe_set_rss_queues"".
Here's how the problem repeats itself:
Some machine (online cpus < 63), And user set num_queues to 63 through
ethtool. Code is in the "ixgbe_set_channels",
adapter->ring_feature[RING_F_FDIR].limit = count;
It becomes 63.
When user use xdp, "ixgbe_set_rss_queues" will set queues num.
adapter->num_rx_queues = rss_i;
adapter->num_tx_queues = rss_i;
adapter->num_xdp_queues = ixgbe_xdp_queues(adapter);
And rss_i's value is from
f = &adapter->ring_feature[RING_F_FDIR];
rss_i = f->indices = f->limit;
So "num_rx_queues" > "num_xdp_queues", when run to "ixgbe_xdp_setup",
for (i = 0; i < adapter->num_rx_queues; i++)
if (adapter->xdp_ring[i]->xsk_umem)
It leads to panic.
Call trace:
[exception RIP: ixgbe_xdp+368]
RIP: ffffffffc02a76a0 RSP: ffff9fe16202f8d0 RFLAGS: 00010297
RAX: 0000000000000000 RBX: 0000000000000020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000000001c RDI: ffffffffa94ead90
RBP: ffff92f8f24c0c18 R8: 0000000000000000 R9: 0000000000000000
R10: ffff9fe16202f830 R11: 0000000000000000 R12: ffff92f8f24c0000
R13: ffff9fe16202fc01 R14: 000000000000000a R15: ffffffffc02a7530
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
7 [ffff9fe16202f8f0] dev_xdp_install at ffffffffa89fbbcc
8 [ffff9fe16202f920] dev_change_xdp_fd at ffffffffa8a08808
9 [ffff9fe16202f960] do_setlink at ffffffffa8a20235
10 [ffff9fe16202fa88] rtnl_setlink at ffffffffa8a20384
11 [ffff9fe16202fc78] rtnetlink_rcv_msg at ffffffffa8a1a8dd
12 [ffff9fe16202fcf0] netlink_rcv_skb at ffffffffa8a717eb
13 [ffff9fe16202fd40] netlink_unicast at ffffffffa8a70f88
14 [ffff9fe16202fd80] netlink_sendmsg at ffffffffa8a71319
15 [ffff9fe16202fdf0] sock_sendmsg at ffffffffa89df290
16 [ffff9fe16202fe08] __sys_sendto at ffffffffa89e19c8
17 [ffff9fe16202ff30] __x64_sys_sendto at ffffffffa89e1a64
18 [ffff9fe16202ff38] do_syscall_64 at ffffffffa84042b9
19 [ffff9fe16202ff50] entry_SYSCALL_64_after_hwframe at ffffffffa8c0008c
So I fix ixgbe_max_channels so that it will not allow a setting of queues
to be higher than the num_online_cpus(). And when run to ixgbe_xdp_setup,
take the smaller value of num_rx_queues and num_xdp_queues.
Fixes: 4a9b32f30f ("ixgbe: fix potential RX buffer starvation for AF_XDP")
Signed-off-by: Feng Zhou <zhoufeng.zf@bytedance.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Both cxgb4 and csiostor drivers run on their own independent Physical
Function. But when cxgb4 and csiostor are both being loaded in parallel via
modprobe, there is a race when firmware upgrade is attempted by both the
drivers.
When the cxgb4 driver initiates the firmware upgrade, it halts the firmware
and the chip until upgrade is complete. When the csiostor driver is coming
up in parallel, the firmware mailbox communication fails with timeouts and
the csiostor driver probe fails.
Add a module soft dependency on cxgb4 driver to ensure loading csiostor
triggers cxgb4 to load first when available to avoid the firmware upgrade
race.
Link: https://lore.kernel.org/r/1632759248-15382-1-git-send-email-rahul.lakkireddy@chelsio.com
Fixes: a3667aaed5 ("[SCSI] csiostor: Chelsio FCoE offload driver")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Disable default logging of some I/O path messages. If desired, the messages
can be turned back on by setting ql2xextended_error_logging.
Link: https://lore.kernel.org/r/20210925035154.29815-1-njavali@marvell.com
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix the following coccicheck warning:
./drivers/scsi/ses.c:137:10-16: WARNING: Unsigned expression compared
with zero: result > 0.
Link: https://lore.kernel.org/r/1632477113-90378-1-git-send-email-jiapeng.chong@linux.alibaba.com
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix incorrect index for UTMRD reference in ufshcd_add_tm_upiu_trace().
Link: https://lore.kernel.org/r/20210924085848.25500-1-jonathan.hsu@mediatek.com
Fixes: 4b42d557a8 ("scsi: ufs: core: Fix wrong Task Tag used in task management request UPIUs")
Cc: stable@vger.kernel.org
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jonathan Hsu <jonathan.hsu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
ksmbd_kthread_fn() and create_socket() returns 0 or error code, and not
task_struct/ERR_PTR.
Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
The sequence count bridge_mcast_querier::seq is protected by
net_bridge::multicast_lock but seqcount_init() does not associate the
seqcount with the lock. This leads to a warning on PREEMPT_RT because
preemption is still enabled.
Let seqcount_init() associate the seqcount with lock that protects the
write section. Remove lockdep_assert_held_once() because lockdep already checks
whether the associated lock is held.
Fixes: 67b746f94f ("net: bridge: mcast: make sure querier port/address updates are consistent")
Reported-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Mike Galbraith <efault@gmx.de>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Link: https://lore.kernel.org/r/20210928141049.593833-1-bigeasy@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The second resource is optional which is only provided on the chipset
IPQ5018. But the blamed commit ignores that and if the resource is
not there it just fails.
the resource is used like this,
if (priv->eth_ldo_rdy) {
val = readl(priv->eth_ldo_rdy);
val |= BIT(0);
writel(val, priv->eth_ldo_rdy);
fsleep(IPQ_PHY_SET_DELAY_US);
}
This patch reverts that to still allow the second resource to be optional
because other SoC have the some MDIO controller and doesn't need to
second resource.
Fixes: fa14d03e01 ("net: mdio-ipq4019: Make use of devm_platform_ioremap_resource()")
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210928134849.2092-1-caihuoqing@baidu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Fix wakeup interrupts in the AMD driver affecting AMD laptops.
- Fix parent irqspec translation in the Qualcomm SPMI GPIO driver.
- Fix deferred probe handling in the Rockchip driver, this is a
stopgap solution while we look for something more elegant.
- Add PM suspend callbacks to the Qualcomm SC7280 driver.
- Some minor doc fix (should have come in earlier, sorry)
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Merge tag 'pinctrl-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Some few pin control fixes for the v5.15 kernel cycle. The most
critical is the AMD fixes.
- Fix wakeup interrupts in the AMD driver affecting AMD laptops.
- Fix parent irqspec translation in the Qualcomm SPMI GPIO driver.
- Fix deferred probe handling in the Rockchip driver, this is a
stopgap solution while we look for something more elegant.
- Add PM suspend callbacks to the Qualcomm SC7280 driver.
- Some minor doc fix (should have come in earlier, sorry)"
* tag 'pinctrl-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: qcom: sc7280: Add PM suspend callbacks
gpio/rockchip: fetch deferred output settings on probe
pinctrl/rockchip: add a queue for deferred pin output settings on probe
pinctrl: qcom: spmi-gpio: correct parent irqspec translation
pinctrl: amd: Handle wake-up interrupt
pinctrl: amd: Add irq field data
pinctrl: core: Remove duplicated word from devm_pinctrl_unregister()
- Signal handling fixes,
- Removal of set_fs().
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Merge tag 'm68k-for-v5.15-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull more m68k updates from Geert Uytterhoeven:
- signal handling fixes
- removal of set_fs()
[ The set_fs removal isn't strictly a fix, but it's been pending for a
while and is very welcome. The signal handling fixes resolved an issue
that was incorrectly attributed to the set_fs changes - Linus ]
* tag 'm68k-for-v5.15-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: Remove set_fs()
m68k: Provide __{get,put}_kernel_nofault
m68k: Factor the 8-byte lowlevel {get,put}_user code into helpers
m68k: Use BUILD_BUG for passing invalid sizes to get_user/put_user
m68k: Remove the 030 case in virt_to_phys_slow
m68k: Document that access_ok is broken for !CONFIG_CPU_HAS_ADDRESS_SPACES
m68k: Leave stack mangling to asm wrapper of sigreturn()
m68k: Update ->thread.esp0 before calling syscall_trace() in ret_from_signal
m68k: Handle arrivals of multiple signals correctly
