audit: type=1400 audit(1665611057.701:17): avc:  denied  { watch } for  pid=4462 comm="syz-executor.4" path="/proc/4462/ns" dev="proc" ino=14224 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dir permissive=1
TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies.  Check SNMP counters.
TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies.  Check SNMP counters.
INFO: task syz-executor.5:4459 blocked for more than 143 seconds.
      Not tainted 5.10.147 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5  state:D stack:27952 pid: 4459 ppid:   283 flags:0x00000004
Call Trace:
 context_switch kernel/sched/core.c:3797 [inline]
 __schedule+0x848/0x1e90 kernel/sched/core.c:4546
 schedule+0xcb/0x270 kernel/sched/core.c:4624
 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4683
 __mutex_lock_common kernel/locking/mutex.c:1047 [inline]
 __mutex_lock+0x7cd/0x1260 kernel/locking/mutex.c:1109
 perf_event_init_context kernel/events/core.c:12904 [inline]
 perf_event_init_task+0x25a/0x800 kernel/events/core.c:12979
 copy_process+0x1725/0x66f0 kernel/fork.c:2080
 kernel_clone+0xe7/0xa20 kernel/fork.c:2467
 __do_sys_clone+0xc8/0x110 kernel/fork.c:2584
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7fcdb12a6f41
RSP: 002b:00007ffc02636fa8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fcdae7d9700 RCX: 00007fcdb12a6f41
RDX: 00007fcdae7d99d0 RSI: 00007fcdae7d92f0 RDI: 00000000003d0f00
RBP: 00007ffc026371e0 R08: 00007fcdae7d9700 R09: 00007fcdae7d9700
R10: 00007fcdae7d99d0 R11: 0000000000000206 R12: 00007ffc0263705e
R13: 00007ffc0263705f R14: 00007fcdae7d9300 R15: 0000000000022000
INFO: task syz-executor.5:4488 blocked for more than 143 seconds.
      Not tainted 5.10.147 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5  state:D stack:29496 pid: 4488 ppid:   283 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3797 [inline]
 __schedule+0x848/0x1e90 kernel/sched/core.c:4546
 schedule+0xcb/0x270 kernel/sched/core.c:4624
 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4683
 __mutex_lock_common kernel/locking/mutex.c:1047 [inline]
 __mutex_lock+0x7cd/0x1260 kernel/locking/mutex.c:1109
 mutex_lock_double kernel/events/core.c:11596 [inline]
 __perf_event_ctx_lock_double kernel/events/core.c:11740 [inline]
 __do_sys_perf_event_open+0x1248/0x2cb0 kernel/events/core.c:12013
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7fcdb12a5b19
RSP: 002b:00007fcdae7fa188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fcdb13b9020 RCX: 00007fcdb12a5b19
RDX: 0000000000000000 RSI: 000000000000002c RDI: 0000000020000000
RBP: 00007fcdb12fff6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0263705f R14: 00007fcdae7fa300 R15: 0000000000022000

Showing all locks held in the system:
1 lock held by khungtaskd/23:
 #0: ffffffff84ff80a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6390
2 locks held by in:imklog/178:
 #0: ffff88800ca90af0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xed/0x110 fs/file.c:1003
 #1: ffffffff84ff80a0 (rcu_read_lock){....}-{1:2}, at: __is_insn_slot_addr+0x0/0x260 kernel/kprobes.c:280
1 lock held by syz-executor.5/4459:
 #0: ffff88801ef8e0b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_init_context kernel/events/core.c:12904 [inline]
 #0: ffff88801ef8e0b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_init_task+0x25a/0x800 kernel/events/core.c:12979
3 locks held by syz-executor.5/4488:
 #0: ffff8880451b3358 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc5/0x2cb0 kernel/events/core.c:11995
 #1: ffff88801ef8e0b0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11595 [inline]
 #1: ffff88801ef8e0b0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11740 [inline]
 #1: ffff88801ef8e0b0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x123b/0x2cb0 kernel/events/core.c:12013
 #2: ffff88801ef8e0b0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11596 [inline]
 #2: ffff88801ef8e0b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11740 [inline]
 #2: ffff88801ef8e0b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1248/0x2cb0 kernel/events/core.c:12013

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