general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] CPU: 0 PID: 333 Comm: syz-executor.0 Not tainted 5.15.182-syzkaller-1080481-g57725b368731 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:do_rmdir+0x1f2/0x6a0 fs/namei.c:4202 Code: ff ff 49 89 c6 48 3d 01 f0 ff ff 72 0d e8 36 df b6 ff 45 89 f7 e9 94 00 00 00 4c 89 74 24 20 4d 8d 7e 30 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 3f 50 f5 ff 49 83 3f 00 4c 8b 34 RSP: 0018:ffffc90000d6fe20 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 1ffff920001adfcc RCX: ffff88810d258000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88810d258000 RBP: ffffc90000d6fee8 R08: dffffc0000000000 R09: ffffed1024507d82 R10: ffffed1024507d82 R11: 1ffff11024507d81 R12: 00000000ffffff9c R13: dffffc0000000000 R14: 0000000000000008 R15: 0000000000000038 FS: 00007f58dd8286c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f58dd7e6d58 CR3: 00000001217f5000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_rmdir fs/namei.c:4229 [inline] __se_sys_rmdir fs/namei.c:4227 [inline] __x64_sys_rmdir+0x49/0x50 fs/namei.c:4227 x64_sys_call+0x25f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:85 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f58ddca5ae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f58dd8280c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007f58dddc4f80 RCX: 00007f58ddca5ae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 00007f58ddcf147a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f58dddc4f80 R15: 00007ffd8d6ba358 Modules linked in: ---[ end trace 27781205ad59e6b8 ]--- RIP: 0010:do_rmdir+0x1f2/0x6a0 fs/namei.c:4202 Code: ff ff 49 89 c6 48 3d 01 f0 ff ff 72 0d e8 36 df b6 ff 45 89 f7 e9 94 00 00 00 4c 89 74 24 20 4d 8d 7e 30 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 3f 50 f5 ff 49 83 3f 00 4c 8b 34 RSP: 0018:ffffc90000d6fe20 EFLAGS: 00010202 RAX: 0000000000000007 RBX: 1ffff920001adfcc RCX: ffff88810d258000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88810d258000 RBP: ffffc90000d6fee8 R08: dffffc0000000000 R09: ffffed1024507d82 R10: ffffed1024507d82 R11: 1ffff11024507d81 R12: 00000000ffffff9c R13: dffffc0000000000 R14: 0000000000000008 R15: 0000000000000038 FS: 00007f58dd8286c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f58dd806fa8 CR3: 00000001217f5000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 49 89 c6 mov %rax,%r14 3: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax 9: 72 0d jb 0x18 b: e8 36 df b6 ff call 0xffb6df46 10: 45 89 f7 mov %r14d,%r15d 13: e9 94 00 00 00 jmp 0xac 18: 4c 89 74 24 20 mov %r14,0x20(%rsp) 1d: 4d 8d 7e 30 lea 0x30(%r14),%r15 21: 4c 89 f8 mov %r15,%rax 24: 48 c1 e8 03 shr $0x3,%rax * 28: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2d: 74 08 je 0x37 2f: 4c 89 ff mov %r15,%rdi 32: e8 3f 50 f5 ff call 0xfff55076 37: 49 83 3f 00 cmpq $0x0,(%r15) 3b: 4c rex.WR 3c: 8b .byte 0x8b 3d: 34 .byte 0x34