general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 1441 Comm: syz.1.259 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:traverse_mounts fs/namei.c:1365 [inline] RIP: 0010:handle_mounts fs/namei.c:1485 [inline] RIP: 0010:step_into+0x122/0xcd0 fs/namei.c:1790 Code: 24 18 c6 44 24 5f 00 43 0f b6 04 2c 84 c0 48 8d 53 38 0f 85 3d 0a 00 00 44 8b 32 4c 8b bc 24 88 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 40 0a 00 00 45 8b 3f 44 89 fe 81 e6 00 RSP: 0018:ffffc90000f17900 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffffc90000f17b00 RCX: 0000000000080000 RDX: ffffc90000f17b38 RSI: 0000000000000150 RDI: 0000000000000151 RBP: ffffc90000f179e8 R08: 0000000000000000 R09: 1ffff11025e12c04 R10: dffffc0000000000 R11: ffffed1025e12c05 R12: 1ffff920001e2f67 R13: dffffc0000000000 R14: 0000000000004005 R15: 0000000000000008 FS: 00007f6da7a286c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6da901b540 CR3: 0000000114879000 CR4: 00000000003526a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: walk_component+0x263/0x460 fs/namei.c:1966 lookup_last fs/namei.c:2411 [inline] path_lookupat+0x155/0x430 fs/namei.c:2435 filename_lookup+0x1fd/0x660 fs/namei.c:2468 user_path_at_empty+0x43/0x50 fs/namei.c:2748 user_path_at include/linux/namei.h:60 [inline] vfs_statx+0x10a/0x530 fs/stat.c:193 do_statx fs/stat.c:587 [inline] __do_sys_statx fs/stat.c:610 [inline] __se_sys_statx fs/stat.c:605 [inline] __x64_sys_statx+0x1ba/0x260 fs/stat.c:605 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f6da8fcde59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6da7a28028 EFLAGS: 00000246 ORIG_RAX: 000000000000014c RAX: ffffffffffffffda RBX: 00007f6da9246fa0 RCX: 00007f6da8fcde59 RDX: 0000000000001000 RSI: 00002000000070c0 RDI: 0000000000000006 RBP: 00007f6da9063e6f R08: 0000200000007100 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6da9247038 R14: 00007f6da9246fa0 R15: 00007ffc51fc35c8 Modules linked in: ---[ end trace 1d090769b55fa066 ]--- RIP: 0010:traverse_mounts fs/namei.c:1365 [inline] RIP: 0010:handle_mounts fs/namei.c:1485 [inline] RIP: 0010:step_into+0x122/0xcd0 fs/namei.c:1790 Code: 24 18 c6 44 24 5f 00 43 0f b6 04 2c 84 c0 48 8d 53 38 0f 85 3d 0a 00 00 44 8b 32 4c 8b bc 24 88 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 40 0a 00 00 45 8b 3f 44 89 fe 81 e6 00 RSP: 0018:ffffc90000f17900 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffffc90000f17b00 RCX: 0000000000080000 RDX: ffffc90000f17b38 RSI: 0000000000000150 RDI: 0000000000000151 RBP: ffffc90000f179e8 R08: 0000000000000000 R09: 1ffff11025e12c04 R10: dffffc0000000000 R11: ffffed1025e12c05 R12: 1ffff920001e2f67 R13: dffffc0000000000 R14: 0000000000004005 R15: 0000000000000008 FS: 00007f6da7a286c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5b4c6ac2f8 CR3: 0000000114879000 CR4: 00000000003526a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 24 18 and $0x18,%al 2: c6 44 24 5f 00 movb $0x0,0x5f(%rsp) 7: 43 0f b6 04 2c movzbl (%r12,%r13,1),%eax c: 84 c0 test %al,%al e: 48 8d 53 38 lea 0x38(%rbx),%rdx 12: 0f 85 3d 0a 00 00 jne 0xa55 18: 44 8b 32 mov (%rdx),%r14d 1b: 4c 8b bc 24 88 00 00 mov 0x88(%rsp),%r15 22: 00 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 40 0a 00 00 jne 0xa77 37: 45 8b 3f mov (%r15),%r15d 3a: 44 89 fe mov %r15d,%esi 3d: 81 .byte 0x81 3e: e6 00 out %al,$0x0