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
 __d_alloc+0x2a/0xa20 fs/dcache.c:1623
 __shmem_file_setup.part.0+0xcb/0x3c0 mm/shmem.c:4260
 __shmem_file_setup mm/shmem.c:4248 [inline]
 shmem_file_setup mm/shmem.c:4315 [inline]
 SYSC_memfd_create mm/shmem.c:3768 [inline]
 SyS_memfd_create+0x1fc/0x3c0 mm/shmem.c:3708
------------[ cut here ]------------
WARNING: CPU: 0 PID: 20810 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
Kernel panic - not syncing: panic_on_warn set ...

 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x466459
RSP: 002b:00007f2aa9b43f48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000466459
RDX: 0000000001fffcc0 RSI: 0000000000000000 RDI: 00000000004beba8
RBP: 00000000000002a5 R08: 0000000000fffe60 R09: ffffffffffffffff
R10: 00000000000002a5 R11: 0000000000000246 R12: 0000000008100000
R13: 0000000020000100 R14: 0000000001fffcc0 R15: 0000000020065600
CPU: 0 PID: 20810 Comm: syz-executor.0 Not tainted 4.14.226-syzkaller #0
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+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:186
 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:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
RSP: 0018:ffff888047b57728 EFLAGS: 00010282
RAX: 000000000000003a RBX: ffff88805e3f46d0 RCX: 0000000000000000
RDX: 0000000000017a39 RSI: ffffffff81441890 RDI: ffffed1008f6aedb
RBP: ffff88809c282380 R08: 000000000000003a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0ef3000
R13: ffff8880b03fd280 R14: ffff88805e3f46d8 R15: ffff8880553388d8
 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal+0x28b/0x930 lib/kobject.c:229
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_init_and_add+0xde/0x120 lib/kobject.c:436
 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652
 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1122
 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1335
 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:2549 [inline]
 do_mount+0xe53/0x2a00 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3072
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x46797a
RSP: 002b:00007fad2f101fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 000000000046797a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fad2f102000
RBP: 00007fad2f102040 R08: 00007fad2f102040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007fad2f102000 R15: 0000000020047a20
Kernel Offset: disabled
Rebooting in 86400 seconds..