netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
INFO: task syz-executor.5:16516 blocked for more than 143 seconds.
      Not tainted 5.10.155 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5  state:D stack:28328 pid:16516 ppid: 10569 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: 0033:0x7f29ca3b1b19
RSP: 002b:00007f29c7927188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f29ca4c4f60 RCX: 00007f29ca3b1b19
RDX: 0000000000000000 RSI: 0000000000000115 RDI: 0000000020001d80
RBP: 00007f29ca40bf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdd9af9f9f R14: 00007f29c7927300 R15: 0000000000022000

Showing all locks held in the system:
1 lock held by khungtaskd/22:
 #0: ffffffff84ff81a0 (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: ffff88800980e5f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xed/0x110 fs/file.c:1003
 #1: ffffffff84ff81a0 (rcu_read_lock){....}-{1:2}, at: try_to_wake_up+0x99/0x1360 kernel/sched/core.c:2878
2 locks held by rs:main Q:Reg/179:
 #0: ffff88800ecab770 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xed/0x110 fs/file.c:1003
 #1: ffff88800f982438 (sb_writers#3){.+.+}-{0:0}, at: ksys_write+0x12d/0x260 fs/read_write.c:658
3 locks held by syz-executor.5/16516:
 #0: ffff8880460eb358 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc5/0x2cb0 kernel/events/core.c:11995
 #1: ffff88803bf534b0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11595 [inline]
 #1: ffff88803bf534b0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11740 [inline]
 #1: ffff88803bf534b0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x123b/0x2cb0 kernel/events/core.c:12013
 #2: ffff88803bf534b0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11596 [inline]
 #2: ffff88803bf534b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11740 [inline]
 #2: ffff88803bf534b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1248/0x2cb0 kernel/events/core.c:12013

=============================================