Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x19c lib/dump_stack.c:53
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10f/0x159 lib/fault-inject.c:149
------------[ cut here ]------------
 should_failslab+0xdb/0x130 mm/failslab.c:32
WARNING: CPU: 1 PID: 17647 at fs/super.c:1163 kill_block_super+0xc9/0xf0 fs/super.c:1163
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 kmem_cache_alloc+0x2d9/0x780 mm/slab.c:3550
Kernel panic - not syncing: panic_on_warn set ...

 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 alloc_buffer_head+0x24/0xe0 fs/buffer.c:3425
 alloc_page_buffers+0xb7/0x200 fs/buffer.c:874
 grow_dev_page fs/buffer.c:1025 [inline]
 grow_buffers fs/buffer.c:1077 [inline]
 __getblk_slow fs/buffer.c:1104 [inline]
 __getblk_gfp+0x342/0x710 fs/buffer.c:1383
 __bread_gfp+0x2e/0x290 fs/buffer.c:1417
 sb_bread include/linux/buffer_head.h:307 [inline]
 hfs_mdb_get+0x2ff/0x1d31 fs/hfs/mdb.c:87
 hfs_fill_super+0xded/0x13c0 fs/hfs/super.c:413
 mount_bdev+0x2c1/0x370 fs/super.c:1134
 hfs_mount+0x35/0x40 fs/hfs/super.c:463
 mount_fs+0x9d/0x2a7 fs/super.c:1237
 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0x417/0x27d0 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xab/0x120 fs/namespace.c:3072
 do_syscall_64+0x1eb/0x630 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45b69a
RSP: 002b:00007f608ac70a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f608ac70b40 RCX: 000000000045b69a
RDX: 00007f608ac70ae0 RSI: 00000000200000c0 RDI: 00007f608ac70b00
RBP: 0000000000000000 R08: 00007f608ac70b40 R09: 00007f608ac70ae0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004
R13: 00000000004c75e1 R14: 00000000004dd408 R15: 0000000000000003
CPU: 1 PID: 17647 Comm: syz-executor.1 Not tainted 4.14.111 #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x19c lib/dump_stack.c:53
 panic+0x1f2/0x438 kernel/panic.c:182
 __warn.cold+0x2f/0x34 kernel/panic.c:546
 report_bug+0x216/0x254 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:944
RIP: 0010:kill_block_super+0xc9/0xf0 fs/super.c:1163
RSP: 0018:ffff88805f2e7b98 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90006651000
RDX: 0000000000040000 RSI: ffffffff818d9169 RDI: ffff8880a45b0560
RBP: ffff88805f2e7bb0 R08: ffff8880a58981c0 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880a58981c0 R12: ffff888063dcebc0
R13: ffff8880a45b01c0 R14: ffff888063dcebc0 R15: dffffc0000000000
 deactivate_locked_super+0x79/0xe0 fs/super.c:319
 sget_userns+0x9df/0xc30 fs/super.c:537
 sget+0xd6/0x120 fs/super.c:572
 mount_bdev+0xd5/0x370 fs/super.c:1107
 hfs_mount+0x35/0x40 fs/hfs/super.c:463
 mount_fs+0x9d/0x2a7 fs/super.c:1237
 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0x417/0x27d0 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xab/0x120 fs/namespace.c:3072
 do_syscall_64+0x1eb/0x630 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45b69a
RSP: 002b:00007f82dc8dba88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f82dc8dbb40 RCX: 000000000045b69a
RDX: 00007f82dc8dbae0 RSI: 00000000200000c0 RDI: 00007f82dc8dbb00
RBP: 0000000000000000 R08: 00007f82dc8dbb40 R09: 00007f82dc8dbae0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004
R13: 00000000004c75e1 R14: 00000000004dd408 R15: 0000000000000003
Kernel Offset: disabled
Rebooting in 86400 seconds..