general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 366 Comm: syz-executor.0 Not tainted 5.15.161-syzkaller-1074726-gb92c0d35d015 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:__d_entry_type include/linux/dcache.h:404 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:409 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:455 [inline] RIP: 0010:do_renameat2+0x6fd/0x1480 fs/namei.c:4933 Code: f2 e8 67 f0 fe ff 48 89 c3 48 3d 01 f0 ff ff 72 12 e8 d7 e3 b1 ff 41 89 de 48 8b 5c 24 18 e9 6f 05 00 00 49 89 de 49 c1 ee 03 <43> 0f b6 04 26 84 c0 0f 85 8a 07 00 00 48 89 5c 24 40 8b 1b be 00 RSP: 0018:ffffc90000d47c20 EFLAGS: 00010246 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffff88810c5393c0 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 RBP: ffffc90000d47ee8 R08: ffffffff81c0b488 R09: ffffed10236c4072 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffc90000d47e08 R14: 0000000000000000 R15: ffff88811b620360 FS: 00007f74841fa6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f748421afa8 CR3: 000000010c504000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_rename fs/namei.c:5031 [inline] __se_sys_rename fs/namei.c:5029 [inline] __x64_sys_rename+0x86/0x90 fs/namei.c:5029 x64_sys_call+0x266/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:83 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f7484699da9 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:00007f74841fa0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f74847c8050 RCX: 00007f7484699da9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000100 RBP: 00007f74846e647a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f74847c8050 R15: 00007ffe91c92cf8 Modules linked in: ---[ end trace 9198276668026300 ]--- RIP: 0010:__d_entry_type include/linux/dcache.h:404 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:409 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:455 [inline] RIP: 0010:do_renameat2+0x6fd/0x1480 fs/namei.c:4933 Code: f2 e8 67 f0 fe ff 48 89 c3 48 3d 01 f0 ff ff 72 12 e8 d7 e3 b1 ff 41 89 de 48 8b 5c 24 18 e9 6f 05 00 00 49 89 de 49 c1 ee 03 <43> 0f b6 04 26 84 c0 0f 85 8a 07 00 00 48 89 5c 24 40 8b 1b be 00 RSP: 0018:ffffc90000d47c20 EFLAGS: 00010246 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffff88810c5393c0 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 RBP: ffffc90000d47ee8 R08: ffffffff81c0b488 R09: ffffed10236c4072 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffc90000d47e08 R14: 0000000000000000 R15: ffff88811b620360 FS: 00007f74841fa6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f748421afa8 CR3: 000000010c504000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: f2 e8 67 f0 fe ff bnd call 0xfffef06d 6: 48 89 c3 mov %rax,%rbx 9: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax f: 72 12 jb 0x23 11: e8 d7 e3 b1 ff call 0xffb1e3ed 16: 41 89 de mov %ebx,%r14d 19: 48 8b 5c 24 18 mov 0x18(%rsp),%rbx 1e: e9 6f 05 00 00 jmp 0x592 23: 49 89 de mov %rbx,%r14 26: 49 c1 ee 03 shr $0x3,%r14 * 2a: 43 0f b6 04 26 movzbl (%r14,%r12,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 8a 07 00 00 jne 0x7c1 37: 48 89 5c 24 40 mov %rbx,0x40(%rsp) 3c: 8b 1b mov (%rbx),%ebx 3e: be .byte 0xbe