Jakub Kicinski 52f671db18 net/sched: act_mirred: use the backlog for mirred ingress ... The test Davide added in commit ca22da2fbd ("act_mirred: use the backlog for nested calls to mirred ingress") hangs our testing VMs every 10 or so runs, with the familiar tcp_v4_rcv -> tcp_v4_rcv deadlock reported by lockdep. The problem as previously described by Davide (see Link) is that if we reverse flow of traffic with the redirect (egress -> ingress) we may reach the same socket which generated the packet. And we may still be holding its socket lock. The common solution to such deadlocks is to put the packet in the Rx backlog, rather than run the Rx path inline. Do that for all egress -> ingress reversals, not just once we started to nest mirred calls. In the past there was a concern that the backlog indirection will lead to loss of error reporting / less accurate stats. But the current workaround does not seem to address the issue. Fixes: 53592b3640 ("net/sched: act_mirred: Implement ingress actions") Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Suggested-by: Davide Caratti <dcaratti@redhat.com> Link: https://lore.kernel.org/netdev/33dc43f587ec1388ba456b4915c75f02a8aae226.1663945716.git.dcaratti@redhat.com/ Signed-off-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2024-02-16 10:13:31 +00:00
..
alsa	kselftest/alsa - conf: Stringify the printed errno in sysfs_get()	2024-01-09 15:14:46 +01:00
amd-pstate	selftests/amd-pstate: Added option to provide perf binary path	2023-10-16 13:06:58 -06:00
arm64	kselftest/arm64: Don't probe the current VL for unsupported vector types	2023-12-19 10:03:17 +00:00
bpf	selftests/bpf: add tests confirming type logic in kernel for __arg_ctx	2024-01-17 20:20:06 -08:00
breakpoints	selftests/breakpoints: Fix format specifier in ksft_print_msg in step_after_suspend_test.c	2023-11-30 14:32:34 -07:00
cachestat	selftests/cachestat: Fix print_cachestat format	2023-10-13 14:08:10 -06:00
capabilities	selftests: capabilities: namespace create varies for root and normal user	2023-11-30 16:37:30 -07:00
cgroup	Many singleton patches against the MM code. The patch series which	2024-01-09 11:18:47 -08:00
clone3	Many singleton patches against the MM code. The patch series which are	2023-11-02 19:38:47 -10:00
connector
core	selftests: core: include linux/close_range.h for CLOSE_RANGE_* macros	2024-02-07 21:20:34 -08:00
cpu-hotplug
cpufreq
damon	selftests/damon: add a test for update_schemes_tried_regions hang bug	2023-12-20 14:48:13 -08:00
dma
dmabuf-heaps	selftests/dmabuf-heaps: add gitignore file	2023-10-05 14:22:59 -06:00
drivers	selftests: bonding: Check initial state	2024-02-01 08:36:24 -08:00
dt	kselftest: dt: Stop relying on dirname to improve performance	2024-01-22 09:39:58 -06:00
efivarfs	selftests/efivarfs: create-read: fix a resource leak	2023-10-18 14:33:44 -06:00
exec	selftests/exec: Convert execveat test to generate KTAP output	2023-10-05 14:50:03 -06:00
fchmodat2	selftests: link libasan statically for tests with -fsanitize=address	2023-09-19 13:21:32 -07:00
filelock
filesystems	vfs-6.8.mount	2024-01-08 10:57:34 -08:00
firmware	selftests: firmware: remove duplicate unneeded defines	2023-10-06 17:33:52 -06:00
fpu
ftrace	tracing updates for 6.8:	2024-01-18 14:35:29 -08:00
futex
gpio
hid	selftests/hid: wacom: fix confidence tests	2024-01-18 09:15:38 +01:00
ia64
intel_pstate
iommu	iommufd/selftest: Add coverage for IOMMU_HWPT_INVALIDATE ioctl	2024-01-11 13:01:25 -04:00
ipc
ir
kcmp
kexec
kmod
kselftest	kselftest/runner.sh: add netns support	2023-12-23 00:26:32 +00:00
kvm	KVM: riscv: selftests: Add Zfa extension to get-reg-list test	2024-01-19 09:20:19 +05:30
landlock	selftests/landlock: Fix capability for net_test	2024-02-02 10:32:09 +01:00
lib
livepatch	selftests/livepatch: fix and refactor new dmesg message code	2024-01-30 08:55:42 -07:00
lkdtm	selftests/lkdtm: Disable CONFIG_UBSAN_TRAP in test config	2023-09-28 16:39:08 -07:00
locking
lsm	selftests: remove the LSM_ID_IMA check in lsm/lsm_list_modules_test	2023-11-22 11:04:31 -05:00
media_tests
membarrier
memfd
memory-hotplug
mincore
mm	selftests/mm: ksm_tests should only MADV_HUGEPAGE valid memory	2024-01-25 23:52:21 -08:00
mount
mount_setattr
move_mount_set_group
mqueue
nci
net	net/sched: act_mirred: use the backlog for mirred ingress	2024-02-16 10:13:31 +00:00
netfilter	netfilter: ctnetlink: fix filtering for zone 0	2024-02-08 12:10:18 +01:00
nolibc	selftests/nolibc: disable coredump via setrlimit	2023-12-11 22:38:37 +01:00
nsfs
ntb
openat2	linux_kselftest-next-6.7-rc1	2023-11-01 17:08:10 -10:00
perf_events
pid_namespace
pidfd	selftests/pidfd: Fix ksft print formats	2023-10-13 14:08:21 -06:00
powerpc	selftests/powerpc: Fix spelling mistake "EACCESS" -> "EACCES"	2023-12-21 22:13:55 +11:00
prctl	selftests: prctl: Add prctl test for PR_GET_NAME	2023-11-30 16:30:05 -07:00
proc	proc: test ProtectionKey in proc-empty-vm test	2023-11-01 12:46:59 -07:00
pstore
ptp	ptp: add testptp mask test	2023-10-15 20:07:52 +01:00
ptrace
rcutorture	rcutorture: Add mid-sized stall to TREE07	2023-11-23 11:58:18 +05:30
resctrl	selftests/resctrl: Fix MBM test failure when MBA unavailable	2023-10-18 14:33:44 -06:00
riscv	RISC-V: selftests: cbo: Ensure asm operands match constraints	2024-01-17 17:46:55 -08:00
rlimits
rseq	selftests/rseq: Do not skip !allowed_cpus for mm_cid	2024-01-22 11:40:36 -07:00
rtc
safesetid
sched	selftests: sched: Remove initialization to 0 for a static variable	2023-11-30 16:47:01 -07:00
seccomp	kselftest/seccomp: Report each expectation we assert as a KTAP test	2024-01-30 08:55:42 -07:00
sgx	selftests/sgx: Skip non X86_64 platform	2023-12-08 10:08:17 -08:00
sigaltstack	selftests/sigaltstack: Fix wrong format specifier	2023-10-13 14:08:26 -06:00
size
sparc64
splice
static_keys	selftests: static_keys: fix test name in messages	2023-10-05 14:28:59 -06:00
sync
syscall_user_dispatch
sysctl	sysclt: Clarify the results of selftest run	2023-12-28 04:57:57 -08:00
tc-testing	net/sched: Remove ipt action tests	2024-01-07 18:23:32 +00:00
tdx	selftests/tdx: add gitignore file	2023-10-05 14:22:53 -06:00
thermal/intel	selftests/thermel/intel: Add test to read power floor status	2023-10-12 21:09:48 +02:00
timens
timers	selftests: timers: Convert nsleep-lat test to generate KTAP output	2023-10-05 15:00:14 -06:00
tmpfs
tpm2
tty
uevent	selftests: uevent filtering: fix return on error in uevent_listener	2023-10-05 14:28:53 -06:00
user
user_events	Tracing updates for v6.7:	2023-11-03 07:41:18 -10:00
vDSO	kselftest/vDSO: Use ksft_print_msg() rather than printf in vdso_test_abi	2023-11-30 14:50:09 -07:00
watchdog
wireguard
x86	selftests:x86: Fix Format String Warnings in lam.c	2023-11-30 14:32:41 -07:00
zram
.gitignore
gen_kselftest_tar.sh
kselftest.h	selftests:modify the incorrect print format	2023-10-18 14:33:44 -06:00
kselftest_deps.sh	selftests: fix dependency checker script	2023-09-08 10:06:49 -06:00
kselftest_harness.h
kselftest_install.sh
kselftest_module.h
lib.mk	Revert "selftests: error out if kernel header files are not yet built"	2023-12-12 17:20:19 -08:00
Makefile	Networking changes for 6.8.	2024-01-11 10:07:29 -08:00
run_kselftest.sh	kselftest/runner.sh: add netns support	2023-12-23 00:26:32 +00:00