Hello,
syzbot found the following issue on:
HEAD commit: 61adba85cc40 Linux 6.1.81
git tree: linux-6.1.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=1552692e180000
kernel config:
https://syzkaller.appspot.com/x/.config?x=41dc7343796eb054
dashboard link:
https://syzkaller.appspot.com/bug?extid=eb8464b6c6e62a3f0c2f
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image:
https://storage.googleapis.com/syzbot-assets/bce1b8db2435/disk-61adba85.raw.xz
vmlinux:
https://storage.googleapis.com/syzbot-assets/488c5d1c7e73/vmlinux-61adba85.xz
kernel image:
https://storage.googleapis.com/syzbot-assets/b0821e919f99/bzImage-61adba85.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+eb8464...@syzkaller.appspotmail.com
=====================================================
WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected
6.1.81-syzkaller #0 Not tainted
-----------------------------------------------------
syz-executor.1/21896 [HC0[0]:SC0[2]:HE0:SE0] is trying to acquire:
ffff88802a4e6240 (&stab->lock){+.-.}-{2:2}, at: __sock_map_delete net/core/sock_map.c:416 [inline]
ffff88802a4e6240 (&stab->lock){+.-.}-{2:2}, at: sock_map_delete_elem+0x97/0x130 net/core/sock_map.c:448
and this task is already holding:
ffff888027ee1bd8 (&sighand->siglock){-.-.}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:376 [inline]
ffff888027ee1bd8 (&sighand->siglock){-.-.}-{2:2}, at: get_signal+0x242/0x17d0 kernel/signal.c:2655
which would create a new lock dependency:
(&sighand->siglock){-.-.}-{2:2} -> (&stab->lock){+.-.}-{2:2}
but this new dependency connects a HARDIRQ-irq-safe lock:
(&sighand->siglock){-.-.}-{2:2}
... which became HARDIRQ-irq-safe at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
__lock_task_sighand+0x145/0x2d0 kernel/signal.c:1410
lock_task_sighand include/linux/sched/signal.h:745 [inline]
send_sigqueue+0x1de/0x720 kernel/signal.c:1978
posix_timer_event kernel/time/posix-timers.c:354 [inline]
posix_timer_fn+0x186/0x390 kernel/time/posix-timers.c:380
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
rcu_lock_acquire include/linux/rcupdate.h:319 [inline]
rcu_read_lock include/linux/rcupdate.h:760 [inline]
is_bpf_text_address+0x3e/0x2a0 kernel/bpf/core.c:731
kernel_text_address+0x9f/0xd0 kernel/extable.c:125
__kernel_text_address+0x9/0x40 kernel/extable.c:79
unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422
anon_vma_chain_alloc mm/rmap.c:141 [inline]
anon_vma_clone+0x94/0x4d0 mm/rmap.c:287
anon_vma_fork+0x83/0x580 mm/rmap.c:350
dup_mmap kernel/fork.c:662 [inline]
dup_mm kernel/fork.c:1540 [inline]
copy_mm+0xc83/0x1990 kernel/fork.c:1589
copy_process+0x19d5/0x4060 kernel/fork.c:2267
kernel_clone+0x222/0x920 kernel/fork.c:2682
__do_sys_clone kernel/fork.c:2823 [inline]
__se_sys_clone kernel/fork.c:2807 [inline]
__x64_sys_clone+0x231/0x280 kernel/fork.c:2807
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
to a HARDIRQ-irq-unsafe lock:
(&stab->lock){+.-.}-{2:2}
... which became HARDIRQ-irq-unsafe at:
...
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
sock_map_update_common+0x1b6/0x5b0 net/core/sock_map.c:492
sock_map_update_elem_sys+0x55b/0x910 net/core/sock_map.c:581
map_update_elem+0x503/0x680 kernel/bpf/syscall.c:1448
__sys_bpf+0x337/0x6c0 kernel/bpf/syscall.c:4993
__do_sys_bpf kernel/bpf/syscall.c:5109 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5107 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5107
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&stab->lock);
local_irq_disable();
lock(&sighand->siglock);
lock(&stab->lock);
<Interrupt>
lock(&sighand->siglock);
*** DEADLOCK ***
2 locks held by syz-executor.1/21896:
#0: ffff888027ee1bd8 (&sighand->siglock){-.-.}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:376 [inline]
#0: ffff888027ee1bd8 (&sighand->siglock){-.-.}-{2:2}, at: get_signal+0x242/0x17d0 kernel/signal.c:2655
#1: ffffffff8d12a840 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:319 [inline]
#1: ffffffff8d12a840 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:760 [inline]
#1: ffffffff8d12a840 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2272 [inline]
#1: ffffffff8d12a840 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run3+0x146/0x440 kernel/trace/bpf_trace.c:2313
the dependencies between HARDIRQ-irq-safe lock and the holding lock:
-> (&sighand->siglock){-.-.}-{2:2} {
IN-HARDIRQ-W at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
__lock_task_sighand+0x145/0x2d0 kernel/signal.c:1410
lock_task_sighand include/linux/sched/signal.h:745 [inline]
send_sigqueue+0x1de/0x720 kernel/signal.c:1978
posix_timer_event kernel/time/posix-timers.c:354 [inline]
posix_timer_fn+0x186/0x390 kernel/time/posix-timers.c:380
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
rcu_lock_acquire include/linux/rcupdate.h:319 [inline]
rcu_read_lock include/linux/rcupdate.h:760 [inline]
is_bpf_text_address+0x3e/0x2a0 kernel/bpf/core.c:731
kernel_text_address+0x9f/0xd0 kernel/extable.c:125
__kernel_text_address+0x9/0x40 kernel/extable.c:79
unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422
anon_vma_chain_alloc mm/rmap.c:141 [inline]
anon_vma_clone+0x94/0x4d0 mm/rmap.c:287
anon_vma_fork+0x83/0x580 mm/rmap.c:350
dup_mmap kernel/fork.c:662 [inline]
dup_mm kernel/fork.c:1540 [inline]
copy_mm+0xc83/0x1990 kernel/fork.c:1589
copy_process+0x19d5/0x4060 kernel/fork.c:2267
kernel_clone+0x222/0x920 kernel/fork.c:2682
__do_sys_clone kernel/fork.c:2823 [inline]
__se_sys_clone kernel/fork.c:2807 [inline]
__x64_sys_clone+0x231/0x280 kernel/fork.c:2807
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
IN-SOFTIRQ-W at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
__lock_task_sighand+0x145/0x2d0 kernel/signal.c:1410
lock_task_sighand include/linux/sched/signal.h:745 [inline]
send_sigqueue+0x1de/0x720 kernel/signal.c:1978
posix_timer_event kernel/time/posix-timers.c:354 [inline]
posix_timer_fn+0x186/0x390 kernel/time/posix-timers.c:380
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
__debug_check_no_obj_freed lib/debugobjects.c:987 [inline]
debug_check_no_obj_freed+0x455/0x4e0 lib/debugobjects.c:1008
slab_free_hook mm/slub.c:1699 [inline]
slab_free_freelist_hook mm/slub.c:1750 [inline]
slab_free mm/slub.c:3661 [inline]
kmem_cache_free+0x241/0x510 mm/slub.c:3683
dst_destroy+0x29e/0x390 net/core/dst.c:123
rt_fibinfo_free_cpus+0x117/0x1b0 net/ipv4/fib_semantics.c:207
fib_nh_common_release+0x11f/0x2e0 net/ipv4/fib_semantics.c:217
fib_nh_release net/ipv4/fib_semantics.c:229 [inline]
free_fib_info_rcu+0xd8/0x490 net/ipv4/fib_semantics.c:241
rcu_do_batch kernel/rcu/tree.c:2296 [inline]
rcu_core+0xad4/0x17e0 kernel/rcu/tree.c:2556
__do_softirq+0x2e9/0xa4c kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
memset_erms+0xb/0x10 arch/x86/lib/memset_64.S:64
__unix_dgram_recvmsg+0xc6/0x1260 net/unix/af_unix.c:2428
____sys_recvmsg+0x285/0x530
___sys_recvmsg net/socket.c:2775 [inline]
do_recvmmsg+0x46d/0xad0 net/socket.c:2869
__sys_recvmmsg net/socket.c:2948 [inline]
__do_sys_recvmmsg net/socket.c:2971 [inline]
__se_sys_recvmmsg net/socket.c:2964 [inline]
__x64_sys_recvmmsg+0x195/0x240 net/socket.c:2964
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
INITIAL USE at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170
spin_lock_irq include/linux/spinlock.h:376 [inline]
calculate_sigpending+0x4a/0x80 kernel/signal.c:195
ret_from_fork+0x8/0x30 arch/x86/entry/entry_64.S:292
}
... key at: [<ffffffff8fe9d720>] sighand_ctor.__key+0x0/0x20
the dependencies between the lock to be acquired
and HARDIRQ-irq-unsafe lock:
-> (&stab->lock){+.-.}-{2:2} {
HARDIRQ-ON-W at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
sock_map_update_common+0x1b6/0x5b0 net/core/sock_map.c:492
sock_map_update_elem_sys+0x55b/0x910 net/core/sock_map.c:581
map_update_elem+0x503/0x680 kernel/bpf/syscall.c:1448
__sys_bpf+0x337/0x6c0 kernel/bpf/syscall.c:4993
__do_sys_bpf kernel/bpf/syscall.c:5109 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5107 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5107
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
IN-SOFTIRQ-W at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
__sock_map_delete net/core/sock_map.c:416 [inline]
sock_map_delete_elem+0x97/0x130 net/core/sock_map.c:448
0xffffffffa0000682
bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
__bpf_prog_run include/linux/filter.h:600 [inline]
bpf_prog_run include/linux/filter.h:607 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
bpf_trace_run3+0x231/0x440 kernel/trace/bpf_trace.c:2313
__bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:114
trace_kmem_cache_free include/trace/events/kmem.h:114 [inline]
kmem_cache_free+0x418/0x510 mm/slub.c:3682
rcu_do_batch kernel/rcu/tree.c:2296 [inline]
rcu_core+0xad4/0x17e0 kernel/rcu/tree.c:2556
__do_softirq+0x2e9/0xa4c kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
rcu_lock_acquire include/linux/rcupdate.h:319 [inline]
rcu_read_lock include/linux/rcupdate.h:760 [inline]
page_ext_get+0x39/0x2a0 mm/page_ext.c:157
page_table_check_set+0x5d/0x6f0 mm/page_table_check.c:109
page_table_check_pte_set include/linux/page_table_check.h:83 [inline]
set_pte_at arch/x86/include/asm/pgtable.h:1009 [inline]
copy_present_pte mm/memory.c:1000 [inline]
copy_pte_range mm/memory.c:1091 [inline]
copy_pmd_range mm/memory.c:1177 [inline]
copy_pud_range mm/memory.c:1214 [inline]
copy_p4d_range mm/memory.c:1238 [inline]
copy_page_range+0x2d50/0x4660 mm/memory.c:1336
dup_mmap kernel/fork.c:696 [inline]
dup_mm kernel/fork.c:1540 [inline]
copy_mm+0xf42/0x1990 kernel/fork.c:1589
copy_process+0x19d5/0x4060 kernel/fork.c:2267
kernel_clone+0x222/0x920 kernel/fork.c:2682
__do_sys_clone kernel/fork.c:2823 [inline]
__se_sys_clone kernel/fork.c:2807 [inline]
__x64_sys_clone+0x231/0x280 kernel/fork.c:2807
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
INITIAL USE at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
sock_map_update_common+0x1b6/0x5b0 net/core/sock_map.c:492
sock_map_update_elem_sys+0x55b/0x910 net/core/sock_map.c:581
map_update_elem+0x503/0x680 kernel/bpf/syscall.c:1448
__sys_bpf+0x337/0x6c0 kernel/bpf/syscall.c:4993
__do_sys_bpf kernel/bpf/syscall.c:5109 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5107 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5107
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
}
... key at: [<ffffffff920ae2e0>] sock_map_alloc.__key+0x0/0x20
... acquired at:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
__sock_map_delete net/core/sock_map.c:416 [inline]
sock_map_delete_elem+0x97/0x130 net/core/sock_map.c:448
bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e
bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
__bpf_prog_run include/linux/filter.h:600 [inline]
bpf_prog_run include/linux/filter.h:607 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
bpf_trace_run3+0x231/0x440 kernel/trace/bpf_trace.c:2313
__bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:114
trace_kmem_cache_free include/trace/events/kmem.h:114 [inline]
kmem_cache_free+0x418/0x510 mm/slub.c:3682
__sigqueue_free kernel/signal.c:458 [inline]
collect_signal kernel/signal.c:601 [inline]
__dequeue_signal+0x4ac/0x5c0 kernel/signal.c:623
dequeue_signal+0xd4/0x590 kernel/signal.c:643
get_signal+0x5f2/0x17d0 kernel/signal.c:2742
arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:297
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x63/0xcd
stack backtrace:
CPU: 0 PID: 21896 Comm: syz-executor.1 Not tainted 6.1.81-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_bad_irq_dependency kernel/locking/lockdep.c:2604 [inline]
check_irq_usage kernel/locking/lockdep.c:2843 [inline]
check_prev_add kernel/locking/lockdep.c:3094 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain+0x4d16/0x5950 kernel/locking/lockdep.c:3825
__lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
__sock_map_delete net/core/sock_map.c:416 [inline]
sock_map_delete_elem+0x97/0x130 net/core/sock_map.c:448
bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e
bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
__bpf_prog_run include/linux/filter.h:600 [inline]
bpf_prog_run include/linux/filter.h:607 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
bpf_trace_run3+0x231/0x440 kernel/trace/bpf_trace.c:2313
__bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:114
trace_kmem_cache_free include/trace/events/kmem.h:114 [inline]
kmem_cache_free+0x418/0x510 mm/slub.c:3682
__sigqueue_free kernel/signal.c:458 [inline]
collect_signal kernel/signal.c:601 [inline]
__dequeue_signal+0x4ac/0x5c0 kernel/signal.c:623
dequeue_signal+0xd4/0x590 kernel/signal.c:643
get_signal+0x5f2/0x17d0 kernel/signal.c:2742
arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:297
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7130e7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7131b870c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: 0000000020000000 RBX: 00007f7130fabf80 RCX: 00007f7130e7dda9
RDX: 0000000000000001 RSI: 0000000000003000 RDI: 0000000020000000
RBP: 00007f7130eca47a R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f7130fabf80 R15: 00007fff3c81e168