general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 5332 Comm: syz-executor.3 Not tainted 6.1.68-syzkaller-00094-gd518ca9dbbe9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 RIP: 0010:__d_entry_type include/linux/dcache.h:394 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:399 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:445 [inline] RIP: 0010:do_renameat2+0x62e/0x1480 fs/namei.c:4884 Code: 08 85 ac ff 41 89 de 4c 8b 64 24 40 e9 0f 06 00 00 4c 89 b4 24 f0 00 00 00 49 89 de 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 06 84 c0 4c 8b 64 24 40 0f 85 2d 08 00 00 48 89 1c 24 RSP: 0018:ffffc9000e9cfc40 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000008 RCX: 0000000000040000 RDX: ffffc90009071000 RSI: 0000000000000357 RDI: 0000000000000358 RBP: ffffc9000e9cfef8 R08: ffffffff81cb1f0b R09: fffff52001d39f67 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff88810bd1f220 R14: 0000000000000001 R15: ffff888111ca7520 FS: 00007fd7c83686c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020004200 CR3: 00000001b9f96000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000fffffc18 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: __do_sys_rename fs/namei.c:4981 [inline] __se_sys_rename fs/namei.c:4979 [inline] __x64_sys_rename+0x86/0x90 fs/namei.c:4979 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd7c767dda9 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:00007fd7c83680c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fd7c77abf80 RCX: 00007fd7c767dda9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000100 RBP: 00007fd7c76ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fd7c77abf80 R15: 00007ffd7e0af908 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__d_entry_type include/linux/dcache.h:394 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:399 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:445 [inline] RIP: 0010:do_renameat2+0x62e/0x1480 fs/namei.c:4884 Code: 08 85 ac ff 41 89 de 4c 8b 64 24 40 e9 0f 06 00 00 4c 89 b4 24 f0 00 00 00 49 89 de 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 06 84 c0 4c 8b 64 24 40 0f 85 2d 08 00 00 48 89 1c 24 RSP: 0018:ffffc9000e9cfc40 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000008 RCX: 0000000000040000 RDX: ffffc90009071000 RSI: 0000000000000357 RDI: 0000000000000358 RBP: ffffc9000e9cfef8 R08: ffffffff81cb1f0b R09: fffff52001d39f67 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff88810bd1f220 R14: 0000000000000001 R15: ffff888111ca7520 FS: 00007fd7c83686c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d227000 CR3: 00000001b9f96000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000fffffc18 DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 08 85 ac ff 41 89 or %al,-0x76be0054(%rbp) 6: de 4c 8b 64 fimuls 0x64(%rbx,%rcx,4) a: 24 40 and $0x40,%al c: e9 0f 06 00 00 jmp 0x620 11: 4c 89 b4 24 f0 00 00 mov %r14,0xf0(%rsp) 18: 00 19: 49 89 de mov %rbx,%r14 1c: 49 c1 ee 03 shr $0x3,%r14 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 41 0f b6 04 06 movzbl (%r14,%rax,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 4c 8b 64 24 40 mov 0x40(%rsp),%r12 36: 0f 85 2d 08 00 00 jne 0x869 3c: 48 89 1c 24 mov %rbx,(%rsp)