REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
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WARNING: CPU: 1 PID: 9795 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
Kernel panic - not syncing: kernel: panic_on_warn set ...

CPU: 1 PID: 9795 Comm: syz-executor.4 Not tainted 4.14.307-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x21d/0x451 kernel/panic.c:247
 check_panic_on_warn.cold+0x19/0x35 kernel/panic.c:171
 __warn+0xdf/0x1e0 kernel/panic.c:603
 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:967
RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
RSP: 0018:ffff8880a278f7a0 EFLAGS: 00010282
RAX: 000000000000004a RBX: ffff8880aa33c010 RCX: 0000000000000000
RDX: 000000000000f2e8 RSI: ffffffff814443b0 RDI: ffffed10144f1eea
RBP: ffff8880a91da980 R08: 000000000000004a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880af0a8540
R13: ffff888098527380 R14: ffff8880aa33c018 R15: ffff8880aa33d118
 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_add+0x11f/0x180 lib/kobject.c:409
 device_add+0x33f/0x15c0 drivers/base/core.c:1885
 device_create_groups_vargs+0x1dc/0x250 drivers/base/core.c:2529
 device_create_vargs+0x3a/0x50 drivers/base/core.c:2569
 bdi_register_va.part.0+0x35/0x650 mm/backing-dev.c:880
 bdi_register_va+0x63/0x80 mm/backing-dev.c:896
 super_setup_bdi_name+0x123/0x220 fs/super.c:1297
 fuse_bdi_init fs/fuse/inode.c:996 [inline]
 fuse_fill_super+0x937/0x15c0 fs/fuse/inode.c:1116
 mount_bdev+0x2b3/0x360 fs/super.c:1134
 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+0x5e/0xd3
RIP: 0033:0x7fced81d10f9
RSP: 002b:00007fced6743168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fced82f0f80 RCX: 00007fced81d10f9
RDX: 0000000020000180 RSI: 0000000020000080 RDI: 0000000020000040
RBP: 00007fced822cae9 R08: 00000000200002c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe0296721f R14: 00007fced6743300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..