------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(!hlock->nest_lock) WARNING: CPU: 0 PID: 19755 at kernel/locking/lockdep.c:5135 match_held_lock+0xad/0xc0 kernel/locking/lockdep.c:5135 Modules linked in: CPU: 0 PID: 19755 Comm: syz-executor.4 Not tainted 5.19.0-rc4-syzkaller-00140-gc76d09da77d6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 RIP: 0010:match_held_lock+0xad/0xc0 kernel/locking/lockdep.c:5135 Code: e8 58 1d 24 fc 85 c0 74 e4 8b 05 46 09 ef 02 85 c0 75 da 48 c7 c6 a0 95 47 86 48 c7 c7 20 92 47 86 89 44 24 04 e8 63 99 d1 ff <0f> 0b 8b 44 24 04 eb bd 66 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 RSP: 0018:ffffc900089378c8 EFLAGS: 00010082 RAX: 0000000000000000 RBX: ffff888142754b68 RCX: 0000000000000000 RDX: ffff888142753900 RSI: ffffffff812c0fe8 RDI: fffff52001126f0b RBP: ffffffff87a94640 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000003 R11: 0000000000000001 R12: ffff888142753900 R13: ffff8881427542f8 R14: 00000000ffffffff R15: ffff888142754b68 FS: 0000555555a79400(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f432e4a7110 CR3: 0000000109296000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __lock_is_held kernel/locking/lockdep.c:5406 [inline] lock_is_held_type+0xa7/0x140 kernel/locking/lockdep.c:5708 lock_is_held include/linux/lockdep.h:279 [inline] rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x480/0x570 kernel/locking/lockdep.c:5636 do_write_seqcount_begin_nested include/linux/seqlock.h:516 [inline] do_write_seqcount_begin include/linux/seqlock.h:541 [inline] vtime_task_switch_generic+0xb5/0x5a0 kernel/sched/cputime.c:768 vtime_task_switch include/linux/vtime.h:95 [inline] finish_task_switch.isra.0+0x4e3/0xa10 kernel/sched/core.c:5020 context_switch kernel/sched/core.c:5149 [inline] __schedule+0x947/0x2630 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 freezable_schedule include/linux/freezer.h:172 [inline] futex_wait_queue+0x144/0x3b0 kernel/futex/waitwake.c:355 futex_wait+0x2c9/0x670 kernel/futex/waitwake.c:656 do_futex+0x1af/0x300 kernel/futex/syscalls.c:106 __do_sys_futex kernel/futex/syscalls.c:183 [inline] __se_sys_futex kernel/futex/syscalls.c:164 [inline] __x64_sys_futex+0x1b0/0x4a0 kernel/futex/syscalls.c:164 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7fb72a307199 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe973197c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007fb72a419f6c RCX: 00007fb72a307199 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb72a419f6c RBP: 00007fb72a419f60 R08: 00007ffe97397080 R09: 0000000000000000 R10: 00007ffe973198b0 R11: 0000000000000246 R12: 00000000001a07ad R13: 00007ffe973198b0 R14: 00007ffe973198d0 R15: 0000000000000bea