loop0: detected capacity change from 0 to 1024 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] CPU: 1 PID: 5809 Comm: syz-executor.0 Not tainted 6.10.0-rc4-syzkaller-00164-g66cc544fd75c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:hfsplus_rename_cat+0x4b3/0x1050 fs/hfsplus/catalog.c:480 Code: 60 42 80 3c 20 00 48 8b 5c 24 20 74 05 e8 a5 32 7b ff 48 8b 94 24 20 01 00 00 48 83 c3 40 48 89 d8 48 c1 e8 03 48 89 44 24 68 <42> 80 3c 20 00 48 89 54 24 08 74 0d 48 89 df e8 79 32 7b ff 48 8b RSP: 0018:ffffc900033ff720 EFLAGS: 00010202 RAX: 0000000000000008 RBX: 0000000000000040 RCX: 0000000000040000 RDX: ffff88805fe0c000 RSI: 000000000000ce49 RDI: ffffc900033ff840 RBP: ffffc900033ffb90 R08: ffffffff827dcb64 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffc900033ff80c R14: ffffc900033ff8a0 R15: 1ffff9200067fef8 FS: 00007f1c033ff6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110f320a4b CR3: 0000000072130000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hfsplus_link+0x3ab/0x800 fs/hfsplus/dir.c:323 vfs_link+0x4f5/0x690 fs/namei.c:4613 do_linkat+0x555/0x6f0 fs/namei.c:4683 __do_sys_link fs/namei.c:4717 [inline] __se_sys_link fs/namei.c:4715 [inline] __x64_sys_link+0x86/0xa0 fs/namei.c:4715 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1c0387d0a9 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:00007f1c033ff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000056 RAX: ffffffffffffffda RBX: 00007f1c039b3f80 RCX: 00007f1c0387d0a9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000020000040 RBP: 00007f1c038ec074 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1c039b3f80 R15: 00007ffe422bd548 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:hfsplus_rename_cat+0x4b3/0x1050 fs/hfsplus/catalog.c:480 Code: 60 42 80 3c 20 00 48 8b 5c 24 20 74 05 e8 a5 32 7b ff 48 8b 94 24 20 01 00 00 48 83 c3 40 48 89 d8 48 c1 e8 03 48 89 44 24 68 <42> 80 3c 20 00 48 89 54 24 08 74 0d 48 89 df e8 79 32 7b ff 48 8b RSP: 0018:ffffc900033ff720 EFLAGS: 00010202 RAX: 0000000000000008 RBX: 0000000000000040 RCX: 0000000000040000 RDX: ffff88805fe0c000 RSI: 000000000000ce49 RDI: ffffc900033ff840 RBP: ffffc900033ffb90 R08: ffffffff827dcb64 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffc900033ff80c R14: ffffc900033ff8a0 R15: 1ffff9200067fef8 FS: 00007f1c033ff6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1c033ded58 CR3: 0000000072130000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) 5: 48 8b 5c 24 20 mov 0x20(%rsp),%rbx a: 74 05 je 0x11 c: e8 a5 32 7b ff call 0xff7b32b6 11: 48 8b 94 24 20 01 00 mov 0x120(%rsp),%rdx 18: 00 19: 48 83 c3 40 add $0x40,%rbx 1d: 48 89 d8 mov %rbx,%rax 20: 48 c1 e8 03 shr $0x3,%rax 24: 48 89 44 24 68 mov %rax,0x68(%rsp) * 29: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2e: 48 89 54 24 08 mov %rdx,0x8(%rsp) 33: 74 0d je 0x42 35: 48 89 df mov %rbx,%rdi 38: e8 79 32 7b ff call 0xff7b32b6 3d: 48 rex.W 3e: 8b .byte 0x8b