MINIX-fs: mounting unchecked file system, running fsck is recommended
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WARNING: CPU: 1 PID: 18022 at fs/inode.c:360 inc_nlink+0x144/0x160 fs/inode.c:360
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 18022 Comm: syz-executor.4 Not tainted 5.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:231
 __warn.cold+0x20/0x45 kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:235
 exc_invalid_op+0x13/0x40 arch/x86/kernel/traps.c:255
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:563
RIP: 0010:inc_nlink+0x144/0x160 fs/inode.c:360
Code: ff 4c 89 e7 e8 5d a6 ee ff e9 42 ff ff ff 4c 89 e7 e8 e0 a5 ee ff e9 fc fe ff ff 4c 89 e7 e8 d3 a5 ee ff eb d4 e8 5c 50 af ff <0f> 0b e9 6e ff ff ff e8 d0 a5 ee ff e9 44 ff ff ff e8 c6 a5 ee ff
RSP: 0018:ffffc90005377da0 EFLAGS: 00010216
RAX: 00000000000159bf RBX: ffff888044dddb00 RCX: ffffc90011d7c000
RDX: 0000000000040000 RSI: ffffffff81c46704 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88804ef12cc8
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888044dddb48
R13: ffff888083d12730 R14: 00000000000000fa R15: 00000000000001ed
 inode_inc_link_count include/linux/fs.h:2207 [inline]
 minix_mkdir+0x71/0x1b0 fs/minix/namei.c:117
 vfs_mkdir+0x508/0x790 fs/namei.c:3641
 do_mkdirat+0x262/0x2d0 fs/namei.c:3664
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cb29
Code: Bad RIP value.
RSP: 002b:00007f6b0b25fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00000000004f6c20 RCX: 000000000045cb29
RDX: 00000000000001ff RSI: 0000000020000040 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000756 R14: 00000000004ca54d R15: 00007f6b0b2606d4
Kernel Offset: disabled
Rebooting in 86400 seconds..