xprt_adjust_timeout: rq_timeout = 0! watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor7:4532] Modules linked in: irq event stamp: 8490908 hardirqs last enabled at (8490907): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (8490907): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (8490907): [] read_seqbegin include/linux/seqlock.h:433 [inline] hardirqs last enabled at (8490907): [] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] hardirqs last enabled at (8490907): [] d_walk+0x80f/0xc80 fs/dcache.c:1248 hardirqs last disabled at (8490908): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (590026): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (589651): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (589651): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 4532 Comm: syz-executor7 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:ffff8801a145f8a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff1003428bf19 RCX: 1ffff1003428a925 RDX: 1ffffffff11a316d RSI: 0000000000000004 RDI: 0000000000000286 RBP: ffff8801a145f9d0 R08: 1ffff1003428bf1d R09: ffff8801a145f728 R10: 0000000000000003 R11: 0000000000000003 R12: ffff8801a1454100 R13: ffff88019863e778 R14: ffff8801a1454100 R15: ffff8801a145f8e8 FS: 000000000153a940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001543978 CR3: 00000001a143b000 CR4: 00000000001406f0 DR0: 00000000200001c0 DR1: 00000000200001c0 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:00007ffdb05ae8e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffdb05b0690 RDI: 00007ffdb05b0690 RBP: 00007ffdb05b0690 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000206 R12: 000000000153b940 R13: 0000000000000000 R14: 000000000000019d R15: 00000000000155ac 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: 4527 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:perf_trace_lock+0x4c9/0x900 include/trace/events/lock.h:39 RSP: 0018:ffff8801a5c276c8 EFLAGS: 00000003 RAX: 0000000000000000 RBX: fffffffffffffff9 RCX: 0000000000000000 RDX: 0000000000000021 RSI: dffffc0000000000 RDI: ffffed0034b84f08 RBP: ffff8801a5c27890 R08: ffff8801da523e98 R09: ffff8801a5c27728 R10: ffffed003b4a47d0 R11: ffff8801da523e83 R12: ffff8801a5c27868 R13: ffffe8ffffd8a000 R14: 1ffff10034b84f05 R15: ffffffff88d77060 FS: 0000000002127940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000002130978 CR3: 00000001a63c0000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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+0x451/0xc80 fs/dcache.c:1298 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:00007ffef5cebca8 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffef5ceda50 RDI: 00007ffef5ceda50 RBP: 00007ffef5ceda50 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000202 R12: 0000000002128940 R13: 0000000000000000 R14: 000000000000019c R15: 00000000000155a8 Code: fc ff df 48 01 c3 31 c0 48 8d 7b 08 48 c7 03 00 00 00 00 48 83 e7 f8 48 c7 43 24 00 00 00 00 48 29 fb 8d 4b 2c c1 e9 03 f3 48 ab <48> 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 b8 18 00 07 00 ba