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proc_dir_entry 'afs/üçn¸]ü[o' already registered
WARNING: CPU: 0 PID: 25676 at fs/proc/generic.c:360 proc_register+0x2c3/0x490 fs/proc/generic.c:359
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 25676 Comm: kworker/0:2 Not tainted 5.0.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: afs afs_manage_cell
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x165/0x21a lib/dump_stack.c:113
 panic+0x212/0x40b kernel/panic.c:214
 __warn.cold.7+0x1b/0x38 kernel/panic.c:571
 report_bug+0x1a4/0x200 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:proc_register+0x2c3/0x490 fs/proc/generic.c:359
Code: 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 c1 01 00 00 49 8b b4 24 d0 00 00 00 48 c7 c7 e0 89 55 87 e8 80 a8 7f ff <0f> 0b 48 c7 c7 40 bc 86 88 e8 4f a8 2e 05 4c 89 ea 48 b8 00 00 00
RSP: 0018:ffff888093a2fa88 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffed10118efb0b RCX: 0000000000000000
RDX: 0000000000000004 RSI: 0000000000000008 RDI: ffffffff8a3ced20
RBP: ffff888093a2fad8 R08: ffffed1015d03ef9 R09: ffffed1015d03ef8
R10: ffffed1015d03ef8 R11: ffff8880ae81f7c7 R12: ffff88809a90fac0
R13: ffff88808c77d80c R14: ffff88808c77d850 R15: ffff88808c77d780
 proc_mkdir_data+0x140/0x230 fs/proc/generic.c:475
 proc_net_mkdir include/linux/proc_fs.h:124 [inline]
 afs_proc_cell_setup+0x92/0x170 fs/afs/proc.c:613
 afs_activate_cell fs/afs/cell.c:554 [inline]
 afs_manage_cell+0x42f/0xe50 fs/afs/cell.c:634
 process_one_work+0x7b9/0x15e0 kernel/workqueue.c:2269
 worker_thread+0x85/0xb60 kernel/workqueue.c:2415
 kthread+0x324/0x3e0 kernel/kthread.c:253
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..