Oops: general protection fault, probably for non-canonical address 0xfbd5a5d5a0000003: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0xdead4ead00000018-0xdead4ead0000001f] CPU: 0 UID: 0 PID: 4730 Comm: udevd Not tainted 6.14.0-rc2-syzkaller-00039-g09fbf3d50205 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__d_lookup+0x20f/0x7b0 fs/dcache.c:2352 Code: 89 44 24 48 49 8d 45 04 48 89 44 24 20 49 8d 45 08 48 89 44 24 50 4c 89 7c 24 30 48 89 2c 24 48 83 c5 18 48 89 e8 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 37 03 00 00 8b 6d 00 89 ef 44 89 f6 e8 c8 RSP: 0018:ffffc9000230f750 EFLAGS: 00010a06 RAX: 1bd5a9d5a0000003 RBX: dffffc0000000000 RCX: ffff888000734880 RDX: 0000000000000000 RSI: 000000002d7b8219 RDI: 000000009a475fe0 RBP: dead4ead00000018 R08: ffffffff823e5298 R09: 1ffff9200004b5ee R10: dffffc0000000000 R11: fffff5200004b5ef R12: ffffffff823e50d4 R13: ffffc9000230fbb0 R14: 000000002d7b8219 R15: ffff888031ffa468 FS: 00007fb34a8a0280(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd0207e9000 CR3: 000000003f13e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lookup_fast+0x79/0x590 fs/namei.c:1751 walk_component fs/namei.c:2110 [inline] link_path_walk+0x672/0xea0 fs/namei.c:2479 path_openat+0x266/0x3590 fs/namei.c:3985 do_filp_open+0x27f/0x4e0 fs/namei.c:4016 do_sys_openat2+0x13e/0x1d0 fs/open.c:1428 do_sys_open fs/open.c:1443 [inline] __do_sys_openat fs/open.c:1459 [inline] __se_sys_openat fs/open.c:1454 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1454 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb34a9739a4 Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007ffdeb6ee2c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007fb34a9739a4 RDX: 0000000000080000 RSI: 00007ffdeb6ee3f8 RDI: 00000000ffffff9c RBP: 00007ffdeb6ee3f8 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 00005592230a5b42 R14: 0000000000000001 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__d_lookup+0x20f/0x7b0 fs/dcache.c:2352 Code: 89 44 24 48 49 8d 45 04 48 89 44 24 20 49 8d 45 08 48 89 44 24 50 4c 89 7c 24 30 48 89 2c 24 48 83 c5 18 48 89 e8 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 37 03 00 00 8b 6d 00 89 ef 44 89 f6 e8 c8 RSP: 0018:ffffc9000230f750 EFLAGS: 00010a06 RAX: 1bd5a9d5a0000003 RBX: dffffc0000000000 RCX: ffff888000734880 RDX: 0000000000000000 RSI: 000000002d7b8219 RDI: 000000009a475fe0 RBP: dead4ead00000018 R08: ffffffff823e5298 R09: 1ffff9200004b5ee R10: dffffc0000000000 R11: fffff5200004b5ef R12: ffffffff823e50d4 R13: ffffc9000230fbb0 R14: 000000002d7b8219 R15: ffff888031ffa468 FS: 00007fb34a8a0280(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f34b543f96e CR3: 000000003f13e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 44 24 48 mov %eax,0x48(%rsp) 4: 49 8d 45 04 lea 0x4(%r13),%rax 8: 48 89 44 24 20 mov %rax,0x20(%rsp) d: 49 8d 45 08 lea 0x8(%r13),%rax 11: 48 89 44 24 50 mov %rax,0x50(%rsp) 16: 4c 89 7c 24 30 mov %r15,0x30(%rsp) 1b: 48 89 2c 24 mov %rbp,(%rsp) 1f: 48 83 c5 18 add $0x18,%rbp 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 18 movzbl (%rax,%rbx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 37 03 00 00 jne 0x36d 36: 8b 6d 00 mov 0x0(%rbp),%ebp 39: 89 ef mov %ebp,%edi 3b: 44 89 f6 mov %r14d,%esi 3e: e8 .byte 0xe8 3f: c8 .byte 0xc8