__dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
------------[ cut here ]------------
 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
WARNING: CPU: 0 PID: 10015 at fs/super.c:1163 kill_block_super+0xbe/0xe0 fs/super.c:1163
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 alloc_vfsmnt+0x23/0x7f0 fs/namespace.c:205
Kernel panic - not syncing: panic_on_warn set ...

 clone_mnt+0x6c/0xff0 fs/namespace.c:1086
 copy_tree+0xd6/0xa20 fs/namespace.c:1811
 do_loopback fs/namespace.c:2297 [inline]
 do_mount+0x1cd3/0x2a30 fs/namespace.c:2899
 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: 0033:0x7fbbd38d55a9
RSP: 002b:00007fbbd2249168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbbd39f6f80 RCX: 00007fbbd38d55a9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000020000080
RBP: 00007fbbd22491d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000055402 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff86dbe01f R14: 00007fbbd2249300 R15: 0000000000022000
CPU: 0 PID: 10015 Comm: syz-executor.4 Not tainted 4.14.295-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
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:ffff88809676fbc8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90009dd3000
RDX: 0000000000040000 RSI: ffffffff8187637e RDI: ffff8880a5c5cc30
RBP: ffff8880a2cd2c40 R08: ffffffff8b9b1248 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880b05a2040 R12: ffff8880a5c5c780
R13: ffffffff891ea510 R14: ffffffff88f45820 R15: dffffc0000000000
PF_BRIDGE: RTM_SETLINK with unknown ifindex
 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: 0033:0x7f80eb4535a9
RSP: 002b:00007f80e9dc7168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f80eb574f80 RCX: 00007f80eb4535a9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000020000000
RBP: 00007f80e9dc71d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004015 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fff474d90af R14: 00007f80e9dc7300 R15: 0000000000022000
CPU: 1 PID: 10017 Comm: syz-executor.5 Not tainted 4.14.295-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc_track_caller+0x2bc/0x400 mm/slab.c:3735
 kstrdup+0x36/0x70 mm/util.c:57
 kstrdup_const+0x35/0x60 mm/util.c:78
 alloc_vfsmnt+0xe0/0x7f0 fs/namespace.c:214
 vfs_kern_mount.part.0+0x27/0x470 fs/namespace.c:1039
 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: 0033:0x7fd08e0895a9
RSP: 002b:00007fd08c9fd168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fd08e1aaf80 RCX: 00007fd08e0895a9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000020000080
RBP: 00007fd08c9fd1d0 R08: 00000000200001c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe16f5629f R14: 00007fd08c9fd300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..