hugetlbfs: Bad mount option: "" devpts: called with bogus options watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor3:4555] Modules linked in: irq event stamp: 74076712 hardirqs last enabled at (74076711): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (74076711): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (74076711): [] read_seqbegin include/linux/seqlock.h:433 [inline] hardirqs last enabled at (74076711): [] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] hardirqs last enabled at (74076711): [] d_walk+0x80f/0xc80 fs/dcache.c:1248 hardirqs last disabled at (74076712): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (1374832): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (1374697): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (1374697): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 1 PID: 4555 Comm: syz-executor3 Not tainted 4.17.0-rc6+ #29 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:ffff88019f0e78d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff10033e1cf20 RCX: 0000000000000000 RDX: 1ffffffff11a31ad RSI: ffff88019f0d88b8 RDI: 0000000000000286 RBP: ffff88019f0e79c8 R08: 0000000000004c45 R09: 0000000000000004 R10: ffff88019f0d8958 R11: ffff88019f0d8080 R12: ffff88019f0d8080 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000001d51940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004ce640 CR3: 000000019f016000 CR4: 00000000001406e0 DR0: 00000000200001c0 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 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:00007fff0173ba88 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007fff0173d830 RDI: 00007fff0173d830 RBP: 00007fff0173d830 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000006 R11: 0000000000000206 R12: 0000000001d52940 R13: 0000000000000000 R14: 000000000000034d R15: 000000000002c44f 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: 4552 Comm: syz-executor7 Not tainted 4.17.0-rc6+ #29 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0x231/0x5140 kernel/locking/lockdep.c:3310 RSP: 0018:ffff8801a0837520 EFLAGS: 00000006 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 1ffff1003663083f RSI: 0000000000000001 RDI: ffffffff88d18d60 RBP: ffff8801a08378a8 R08: 0000000000000001 R09: 0000000000000000 R10: ffffed00366308ec R11: ffff8801a161c000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b31841f8 FS: 0000000001273940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffddf348b8c CR3: 00000001a0801000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920 _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:00007ffddf349298 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffddf34b040 RDI: 00007ffddf34b040 RBP: 00007ffddf34b040 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000006 R11: 0000000000000202 R12: 0000000001274940 R13: 0000000000000000 R14: 000000000000033d R15: 000000000002c50e Code: 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 3f 36 00 00 49 81 3f 20 25 b4 89 <0f> 84 4a ff ff ff 83 fe 01 0f 87 4d ff ff ff 48 b8 00 00 00 00