watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor5:4544] Modules linked in: irq event stamp: 8323806 hardirqs last enabled at (8323805): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (8323805): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (8323805): [] read_seqbegin include/linux/seqlock.h:433 [inline] hardirqs last enabled at (8323805): [] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] hardirqs last enabled at (8323805): [] d_walk+0x80f/0xc80 fs/dcache.c:1248 hardirqs last disabled at (8323806): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (3983278): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (3983179): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (3983179): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 4544 Comm: syz-executor5 Not tainted 4.17.0-rc4+ #14 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:783 [inline] RIP: 0010:lock_release+0x4d4/0xa10 kernel/locking/lockdep.c:3942 RSP: 0018:ffff88019fb3f8a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff10033f67f19 RCX: 1ffff10033f66155 RDX: 1ffffffff11a316d RSI: 0000000000000004 RDI: 0000000000000286 RBP: ffff88019fb3f9d0 R08: 1ffff10033f67f1d R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000003 R12: ffff88019fb30280 R13: ffff8801c98097b8 R14: ffff88019fb30280 R15: ffff88019fb3f8e8 FS: 0000000002820940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000028399f8 CR3: 000000019fb17000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_unlock+0x1a/0x30 kernel/locking/spinlock.c:176 spin_unlock include/linux/spinlock.h:350 [inline] d_walk+0x75f/0xc80 fs/dcache.c:1332 shrink_dcache_parent+0x179/0x230 fs/dcache.c:1486 vfs_rmdir+0x202/0x470 fs/namei.c:3850 do_rmdir+0x523/0x610 fs/namei.c:3911 __do_sys_rmdir fs/namei.c:3929 [inline] __se_sys_rmdir fs/namei.c:3927 [inline] __x64_sys_rmdir+0x36/0x40 fs/namei.c:3927 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455777 RSP: 002b:00007ffe885325f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffe88533760 RDI: 00007ffe88533760 RBP: 00007ffe88533760 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000004 R11: 0000000000000202 R12: 0000000002829980 R13: 0000000000000000 R14: 00000000000001da R15: 000000000001828b Code: 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 a3 03 00 00 48 83 3d 73 84 74 07 00 0f 84 b8 02 00 00 48 8b bd e8 fe ff ff 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4545 Comm: syz-executor6 Not tainted 4.17.0-rc4+ #14 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:trace_call_bpf+0x272/0x510 kernel/trace/bpf_trace.c:74 RSP: 0018:ffff88019f2a74c8 EFLAGS: 00000046 RAX: ffff88019f29e2c0 RBX: ffff880194a39210 RCX: ffffffff8181fd0e RDX: 1ffff920003ac006 RSI: ffffffff8181fd22 RDI: ffffc90001d60030 RBP: ffff88019f2a75a8 R08: ffff88019f29e2c0 R09: 0000000000000000 R10: ffffe8ffffd86008 R11: 1ffff1003b5e4ff0 R12: ffffed0033e54ea8 R13: 0000000000000001 R14: dffffc0000000000 R15: ffffc90001d60000 FS: 0000000000ad6940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000adf978 CR3: 000000019f219000 CR4: 00000000001406e0 DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: perf_trace_run_bpf_submit+0x13e/0x370 kernel/events/core.c:8256 perf_trace_lock+0x495/0x900 include/trace/events/lock.h:39 trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x5e6/0xa10 kernel/locking/lockdep.c:3938 __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_unlock+0x1a/0x30 kernel/locking/spinlock.c:176 spin_unlock include/linux/spinlock.h:350 [inline] d_walk+0x75f/0xc80 fs/dcache.c:1332 shrink_dcache_parent+0x179/0x230 fs/dcache.c:1486 vfs_rmdir+0x202/0x470 fs/namei.c:3850 do_rmdir+0x523/0x610 fs/namei.c:3911 __do_sys_rmdir fs/namei.c:3929 [inline] __se_sys_rmdir fs/namei.c:3927 [inline] __x64_sys_rmdir+0x36/0x40 fs/namei.c:3927 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455777 RSP: 002b:00007fffb67dac58 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007fffb67dca00 RDI: 00007fffb67dca00 RBP: 00007fffb67dca00 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000202 R12: 0000000000ad7940 R13: 0000000000000000 R14: 00000000000001e0 R15: 0000000000018295 Code: 24 f8 e8 b2 31 f7 ff 4d 85 ff 0f 84 41 02 00 00 41 bd 01 00 00 00 e8 6e 30 f7 ff 49 8d 7f 30 48 89 fa 48 c1 ea 03 42 80 3c 32 00 <0f> 85 33 02 00 00 48 83 c3 08 49 8d 77 38 49 8b 47 30 48 8b bd