Oops: general protection fault, probably for non-canonical address 0xdead4ead00000018: 0000 [#1] PREEMPT SMP PTI CPU: 0 UID: 0 PID: 1421 Comm: udevd Not tainted 6.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__d_lookup+0x9c/0x180 fs/dcache.c:2335 Code: ff ff ff ff 48 d3 e0 48 f7 d0 48 31 fd 48 85 c5 0f 84 aa 00 00 00 48 89 df e8 30 f8 66 01 4d 8b 36 4d 85 f6 0f 84 a7 00 00 00 <45> 39 7e 18 75 ee 49 8d 5e 78 48 89 df e8 72 f6 66 01 4d 39 6e 10 RSP: 0018:ffffc90001427cb0 EFLAGS: 00010286 RAX: ebb5d7fc20d6a300 RBX: ffff888237400000 RCX: 00000000392770e0 RDX: 3eb26d79c4509b53 RSI: ffffffff8361b5e5 RDI: ffffffff836d3eb3 RBP: 000000000003abdb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88817d43a618 R14: dead4ead00000000 R15: 000000003abdb50e FS: 00007f33496aec80(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1e57570220 CR3: 0000000102fe4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lookup_fast+0x1f/0x100 fs/namei.c:1749 walk_component+0x21/0xf0 fs/namei.c:2108 lookup_last fs/namei.c:2610 [inline] path_lookupat+0x45/0x100 fs/namei.c:2634 filename_lookup+0xdf/0x200 fs/namei.c:2663 do_readlinkat+0x6f/0x150 fs/stat.c:562 __do_sys_readlink fs/stat.c:599 [inline] __se_sys_readlink fs/stat.c:596 [inline] __x64_sys_readlink+0x19/0x20 fs/stat.c:596 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xe0/0x220 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3349785d47 Code: 73 01 c3 48 8b 0d e1 90 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 59 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b1 90 0d 00 f7 d8 64 89 01 48 RSP: 002b:00007ffeb8fc71b8 EFLAGS: 00000202 ORIG_RAX: 0000000000000059 RAX: ffffffffffffffda RBX: 00007ffeb8fc7e18 RCX: 00007f3349785d47 RDX: 0000000000000400 RSI: 00007ffeb8fc75c8 RDI: 00007ffeb8fc71c8 RBP: 00007ffeb8fc7a08 R08: 000055b3c5a141fd R09: 0000000000000000 R10: 0000000000000010 R11: 0000000000000202 R12: 0000000000000200 R13: 00007ffeb8fc75c8 R14: 00007ffeb8fc71c8 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__d_lookup+0x9c/0x180 fs/dcache.c:2335 Code: ff ff ff ff 48 d3 e0 48 f7 d0 48 31 fd 48 85 c5 0f 84 aa 00 00 00 48 89 df e8 30 f8 66 01 4d 8b 36 4d 85 f6 0f 84 a7 00 00 00 <45> 39 7e 18 75 ee 49 8d 5e 78 48 89 df e8 72 f6 66 01 4d 39 6e 10 RSP: 0018:ffffc90001427cb0 EFLAGS: 00010286 RAX: ebb5d7fc20d6a300 RBX: ffff888237400000 RCX: 00000000392770e0 RDX: 3eb26d79c4509b53 RSI: ffffffff8361b5e5 RDI: ffffffff836d3eb3 RBP: 000000000003abdb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88817d43a618 R14: dead4ead00000000 R15: 000000003abdb50e FS: 00007f33496aec80(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1e57570220 CR3: 0000000102fe4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: ff 48 d3 decl -0x2d(%rax) 3: e0 48 loopne 0x4d 5: f7 d0 not %eax 7: 48 31 fd xor %rdi,%rbp a: 48 85 c5 test %rax,%rbp d: 0f 84 aa 00 00 00 je 0xbd 13: 48 89 df mov %rbx,%rdi 16: e8 30 f8 66 01 call 0x166f84b 1b: 4d 8b 36 mov (%r14),%r14 1e: 4d 85 f6 test %r14,%r14 21: 0f 84 a7 00 00 00 je 0xce * 27: 45 39 7e 18 cmp %r15d,0x18(%r14) <-- trapping instruction 2b: 75 ee jne 0x1b 2d: 49 8d 5e 78 lea 0x78(%r14),%rbx 31: 48 89 df mov %rbx,%rdi 34: e8 72 f6 66 01 call 0x166f6ab 39: 4d 39 6e 10 cmp %r13,0x10(%r14)