watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor5:4562] Modules linked in: irq event stamp: 67777814 hardirqs last enabled at (67777813): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (67777813): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (67777813): [] read_seqbegin include/linux/seqlock.h:433 [inline] hardirqs last enabled at (67777813): [] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] hardirqs last enabled at (67777813): [] d_walk+0x80f/0xc80 fs/dcache.c:1248 hardirqs last disabled at (67777814): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (6643410): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (6643323): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (6643323): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 1 PID: 4562 Comm: syz-executor5 Not tainted 4.17.0-rc6+ #24 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_acquire+0x257/0x520 kernel/locking/lockdep.c:3923 RSP: 0018:ffff88019e1d78d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff10033c3af20 RCX: 0000000000000000 RDX: 1ffffffff11a31ad RSI: ffff88019e1ce8b8 RDI: 0000000000000286 RBP: ffff88019e1d79c8 R08: 0000000000006c57 R09: 0000000000000003 R10: ffff88019e1ce930 R11: ffff88019e1ce080 R12: ffff88019e1ce080 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000001153940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000930008 CR3: 000000019e17a000 CR4: 00000000001406e0 DR0: 0000000020000080 DR1: 0000000020000080 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:310 [inline] d_walk+0x261/0xc80 fs/dcache.c:1250 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:00007ffdb3d7f488 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffdb3d81230 RDI: 00007ffdb3d81230 RBP: 00007ffdb3d81230 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000206 R12: 0000000001154940 R13: 0000000000000000 R14: 000000000000086f R15: 00000000000635da Code: 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 5e 02 00 00 48 83 3d 80 74 74 07 00 0f 84 c8 01 00 00 48 8b bd 20 ff 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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4557 Comm: syz-executor3 Not tainted 4.17.0-rc6+ #24 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:perf_trace_lock_acquire+0xa/0x980 include/trace/events/lock.h:13 RSP: 0018:ffff8801a226f8c0 EFLAGS: 00000082 RAX: ffff88019733dc90 RBX: ffff88019733dca8 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffff8801b27e8d78 RDI: ffffffff88d77460 RBP: ffff8801a226f9c8 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff815bfe60 R11: dffffc0000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 000000000212a940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4183ef1000 CR3: 00000001a2270000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000020000000 DR3: 0000000020000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: _raw_spin_lock_nested+0x28/0x40 kernel/locking/spinlock.c:354 d_walk+0x3ad/0xc80 fs/dcache.c:1274 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:00007fff212c5f68 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007fff212c7d10 RDI: 00007fff212c7d10 RBP: 00007fff212c7d10 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000202 R12: 000000000212b940 R13: 0000000000000000 R14: 0000000000000895 R15: 00000000000639a7 Code: ff 4c 8b 85 48 fe ff ff 4c 8b 95 60 fe ff ff 48 8b 85 68 fe ff ff e9 b7 f9 ff ff 66 0f 1f 44 00 00 48 ba 00 00 00 00 00 fc ff df <55> 49 89 f1 48 89 e5 41 57 49 89 ff 41 56 41 55 41 54 4c 8d 65