general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 0 PID: 5630 Comm: syz-executor.4 Not tainted 6.1.87-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:mark_buffer_dirty_inode+0x4c/0x300 fs/buffer.c:573 Code: ff 48 83 c5 30 48 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 ef e8 83 ef e0 ff 4c 8b 75 00 49 8d 6d 10 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 65 ef e0 ff 48 8b 6d 00 48 83 c5 RSP: 0018:ffffc900036ff828 EFLAGS: 00010202 RAX: 0000000000000002 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90010873000 RSI: 00000000000083d1 RDI: 00000000000083d2 RBP: 0000000000000010 R08: ffffffff82fe86a1 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888055ca9050 R15: dffffc0000000000 FS: 00007fc40a9f66c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000156e9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udf_rename+0xb58/0x14d0 fs/udf/namei.c:1190 vfs_rename+0xd32/0x10f0 fs/namei.c:4876 do_renameat2+0xde0/0x1440 fs/namei.c:5029 __do_sys_renameat2 fs/namei.c:5062 [inline] __se_sys_renameat2 fs/namei.c:5059 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5059 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fc40be7dea9 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:00007fc40a9f60c8 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007fc40bfac050 RCX: 00007fc40be7dea9 RDX: 0000000000000005 RSI: 0000000020000100 RDI: 0000000000000005 RBP: 00007fc40beca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000140 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fc40bfac050 R15: 00007ffd471e7e38 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:mark_buffer_dirty_inode+0x4c/0x300 fs/buffer.c:573 Code: ff 48 83 c5 30 48 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 ef e8 83 ef e0 ff 4c 8b 75 00 49 8d 6d 10 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 65 ef e0 ff 48 8b 6d 00 48 83 c5 RSP: 0018:ffffc900036ff828 EFLAGS: 00010202 RAX: 0000000000000002 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90010873000 RSI: 00000000000083d1 RDI: 00000000000083d2 RBP: 0000000000000010 R08: ffffffff82fe86a1 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888055ca9050 R15: dffffc0000000000 FS: 00007fc40a9f66c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff520f2f98 CR3: 00000000156e9000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 48 83 c5 30 add $0x30,%rbp 4: 48 89 e8 mov %rbp,%rax 7: 48 c1 e8 03 shr $0x3,%rax b: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) 10: 74 08 je 0x1a 12: 48 89 ef mov %rbp,%rdi 15: e8 83 ef e0 ff call 0xffe0ef9d 1a: 4c 8b 75 00 mov 0x0(%rbp),%r14 1e: 49 8d 6d 10 lea 0x10(%r13),%rbp 22: 48 89 e8 mov %rbp,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 ef mov %rbp,%rdi 33: e8 65 ef e0 ff call 0xffe0ef9d 38: 48 8b 6d 00 mov 0x0(%rbp),%rbp 3c: 48 rex.W 3d: 83 .byte 0x83 3e: c5 .byte 0xc5