slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 kmem_cache_alloc+0x28e/0x3c0 mm/slab.c:3550
 getname_kernel+0x4e/0x340 fs/namei.c:218
 kern_path+0x1b/0x40 fs/namei.c:2466
 lookup_bdev fs/block_dev.c:2117 [inline]
 lookup_bdev+0xc6/0x1c0 fs/block_dev.c:2107
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3688 at fs/super.c:1163 kill_block_super+0xbe/0xe0 fs/super.c:1163
Kernel panic - not syncing: panic_on_warn set ...

 blkdev_get_by_path+0x1b/0xa0 fs/block_dev.c:1688
 mount_bdev+0x4c/0x360 fs/super.c:1092
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
 SYSC_mount fs/namespace.c:3121 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3098
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f78a91417aa
RSP: 002b:00007f78a7ab4f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020002540 RCX: 00007f78a91417aa
RDX: 0000000020000100 RSI: 0000000020000200 RDI: 00007f78a7ab4fe0
RBP: 00007f78a7ab5020 R08: 00007f78a7ab5020 R09: 0000000020000100
R10: 0000000002000085 R11: 0000000000000202 R12: 0000000020000100
R13: 0000000020000200 R14: 00007f78a7ab4fe0 R15: 0000000020002600
CPU: 0 PID: 3688 Comm: syz-executor.1 Not tainted 4.14.291-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:kill_block_super+0xbe/0xe0 fs/super.c:1163
RSP: 0018:ffff888099c0fbc8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90007c28000
RDX: 0000000000040000 RSI: ffffffff81875f2e RDI: ffff888090236670
RBP: ffff888088f80740 R08: ffffffff8b9deef0 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88809be6e400 R12: ffff8880902361c0
R13: ffffffff8926c7b0 R14: ffffffff88f45760 R15: dffffc0000000000
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 sget_userns+0x9c4/0xc10 fs/super.c:537
 sget+0xd1/0x110 fs/super.c:572
 mount_bdev+0xcd/0x360 fs/super.c:1107
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
 SYSC_mount fs/namespace.c:3121 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3098
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f01b05527aa
RSP: 002b:00007f01aeec5f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020002540 RCX: 00007f01b05527aa
RDX: 0000000020000100 RSI: 0000000020000200 RDI: 00007f01aeec5fe0
RBP: 00007f01aeec6020 R08: 00007f01aeec6020 R09: 0000000020000100
R10: 0000000002000085 R11: 0000000000000202 R12: 0000000020000100
R13: 0000000020000200 R14: 00007f01aeec5fe0 R15: 0000000020002600
Kernel Offset: disabled
Rebooting in 86400 seconds..