------------[ cut here ]------------ WARNING: CPU: 0 PID: 12048 at fs/kernfs/dir.c:36 kernfs_active+0x119/0x150 fs/kernfs/dir.c:36 Modules linked in: CPU: 0 PID: 12048 Comm: syz-executor.1 Not tainted 6.1.0-rc4-syzkaller-00362-gfef7fd48922d #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:kernfs_active+0x119/0x150 fs/kernfs/dir.c:36 Code: e8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1f 8b 5b 04 31 ff 89 de e8 e6 6d 7e ff 89 d8 5b f7 d0 5d c1 e8 1f c3 e8 07 71 7e ff <0f> 0b eb a5 48 89 ef e8 5b c7 ca ff eb d7 48 c7 c7 4c 65 e2 8d e8 RSP: 0018:ffffc900290afba0 EFLAGS: 00010216 RAX: 00000000000000c6 RBX: ffff88806cd3ee80 RCX: ffffc90003a39000 RDX: 0000000000040000 RSI: ffffffff81fe3b79 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88806cd3ee80 R13: ffff888024f6c000 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:00000000f7f31b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000033824000 CR3: 0000000075f40000 CR4: 0000000000150ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kernfs_find_and_get_node_by_id+0x84/0x170 fs/kernfs/dir.c:708 __kernfs_fh_to_dentry+0xdb/0x270 fs/kernfs/mount.c:102 exportfs_decode_fh_raw+0x127/0x7d0 fs/exportfs/expfs.c:435 exportfs_decode_fh+0x38/0x90 fs/exportfs/expfs.c:575 do_handle_to_path fs/fhandle.c:152 [inline] handle_to_path fs/fhandle.c:207 [inline] do_handle_open+0x2b6/0x8b0 fs/fhandle.c:223 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f36549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7f315cc EFLAGS: 00000296 ORIG_RAX: 0000000000000156 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000380 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi