loop0: detected capacity change from 0 to 32768 BUG: unable to handle page fault for address: ffffed110dfe0959 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffee067 P4D 23ffee067 PUD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 6619 Comm: syz.0.15 Not tainted 6.13.0-rc4-syzkaller-00071-gfd0584d220fe #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:bch2_dirent_name_bytes fs/bcachefs/dirent.c:23 [inline] RIP: 0010:bch2_dirent_get_name fs/bcachefs/dirent.c:37 [inline] RIP: 0010:bch2_dirent_to_text+0xba/0x2f0 fs/bcachefs/dirent.c:152 Code: bf 09 00 00 00 48 89 de e8 e3 e7 73 fd 48 83 fb 08 77 09 e8 f8 e2 73 fd 31 d2 eb 53 8d 45 fa 49 8d 1c c4 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 97 bf d7 fd c1 e5 03 48 8b 1b 31 RSP: 0018:ffffc900032beb90 EFLAGS: 00010a06 RAX: 1ffff1110dfe0959 RBX: ffff88886ff04ac8 RCX: ffff88802df50000 RDX: 0000000000000000 RSI: ffffffffffffffd8 RDI: 0000000000000009 RBP: 0000000000000000 R08: ffffffff842b90dd R09: 0000000000000020 R10: dffffc0000000000 R11: ffffffff842b9040 R12: ffff88806ff04af8 R13: dffffc0000000000 R14: ffffc900032bf340 R15: ffff88806ff04ad2 FS: 00007f2fbf8666c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed110dfe0959 CR3: 0000000029c76000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: journal_entry_btree_keys_to_text+0x1d7/0x390 fs/bcachefs/journal_io.c:425 bch2_sb_clean_to_text+0x138/0x240 fs/bcachefs/sb-clean.c:252 bch2_sb_field_validate+0x201/0x2e0 fs/bcachefs/super-io.c:1244 bch2_sb_validate+0xbb1/0xf70 fs/bcachefs/super-io.c:480 __bch2_read_super+0xc24/0x1380 fs/bcachefs/super-io.c:837 bch2_fs_open+0x270/0x2f80 fs/bcachefs/super.c:2033 bch2_fs_get_tree+0x738/0x1710 fs/bcachefs/fs.c:2157 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034 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: 0033:0x7f2fbeb7711a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 7e 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2fbf865e78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f2fbf865f00 RCX: 00007f2fbeb7711a RDX: 0000000020011a00 RSI: 0000000020000000 RDI: 00007f2fbf865ec0 RBP: 0000000020011a00 R08: 00007f2fbf865f00 R09: 0000000001200014 R10: 0000000001200014 R11: 0000000000000246 R12: 0000000020000000 R13: 00007f2fbf865ec0 R14: 00000000000119fd R15: 0000000020000200 Modules linked in: CR2: ffffed110dfe0959 ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_dirent_name_bytes fs/bcachefs/dirent.c:23 [inline] RIP: 0010:bch2_dirent_get_name fs/bcachefs/dirent.c:37 [inline] RIP: 0010:bch2_dirent_to_text+0xba/0x2f0 fs/bcachefs/dirent.c:152 Code: bf 09 00 00 00 48 89 de e8 e3 e7 73 fd 48 83 fb 08 77 09 e8 f8 e2 73 fd 31 d2 eb 53 8d 45 fa 49 8d 1c c4 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 97 bf d7 fd c1 e5 03 48 8b 1b 31 RSP: 0018:ffffc900032beb90 EFLAGS: 00010a06 RAX: 1ffff1110dfe0959 RBX: ffff88886ff04ac8 RCX: ffff88802df50000 RDX: 0000000000000000 RSI: ffffffffffffffd8 RDI: 0000000000000009 RBP: 0000000000000000 R08: ffffffff842b90dd R09: 0000000000000020 R10: dffffc0000000000 R11: ffffffff842b9040 R12: ffff88806ff04af8 R13: dffffc0000000000 R14: ffffc900032bf340 R15: ffff88806ff04ad2 FS: 00007f2fbf8666c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed110dfe0959 CR3: 0000000029c76000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: bf 09 00 00 00 mov $0x9,%edi 5: 48 89 de mov %rbx,%rsi 8: e8 e3 e7 73 fd call 0xfd73e7f0 d: 48 83 fb 08 cmp $0x8,%rbx 11: 77 09 ja 0x1c 13: e8 f8 e2 73 fd call 0xfd73e310 18: 31 d2 xor %edx,%edx 1a: eb 53 jmp 0x6f 1c: 8d 45 fa lea -0x6(%rbp),%eax 1f: 49 8d 1c c4 lea (%r12,%rax,8),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 97 bf d7 fd call 0xfdd7bfd0 39: c1 e5 03 shl $0x3,%ebp 3c: 48 8b 1b mov (%rbx),%rbx 3f: 31 .byte 0x31