syzbot


kernel BUG in hfsplus_bnode_put

Status: upstream: reported C repro on 2023/06/17 11:52
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+40bef8b3d36fddf962ca@syzkaller.appspotmail.com
First crash: 337d, last: 17d
Bug presence (1)
Date Name Commit Repro Result
2023/09/15 upstream (ToT) 9fdfb15a3dbf C [report] kernel BUG in hfsplus_bnode_put
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in hfsplus_bnode_put hfs C error 42 14h47m 487d 0/26 upstream: reported C repro on 2023/01/18 07:25
linux-5.15 kernel BUG in hfsplus_bnode_put origin:upstream C error 3 39d 337d 0/3 upstream: reported C repro on 2023/06/17 12:22
Fix bisection attempts (7)
Created Duration User Patch Repo Result
2024/04/19 14:52 2h05m bisect fix linux-6.1.y job log (0) log
2024/03/17 08:25 1h29m bisect fix linux-6.1.y job log (0) log
2024/01/21 03:18 1h33m bisect fix linux-6.1.y job log (0) log
2023/12/21 21:32 1h30m bisect fix linux-6.1.y job log (0) log
2023/11/21 18:10 1h45m bisect fix linux-6.1.y job log (0) log
2023/10/19 01:13 1h25m bisect fix linux-6.1.y job log (0) log
2023/07/31 21:13 3h02m bisect fix linux-6.1.y job log (0) log

Sample crash report:
loop0: detected capacity change from 0 to 1024
------------[ cut here ]------------
kernel BUG at fs/hfsplus/bnode.c:618!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5475 Comm: syz-executor401 Not tainted 6.1.53-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:hfsplus_bnode_put+0x6b3/0x6d0 fs/hfsplus/bnode.c:618
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 6c fd ff ff 48 89 df e8 de 89 82 ff e9 5f fd ff ff e8 e4 e7 2b ff 0f 0b e8 dd e7 2b ff <0f> 0b e8 d6 e7 2b ff 0f 0b e8 cf e7 2b ff 0f 0b 66 2e 0f 1f 84 00
RSP: 0018:ffffc900058b7530 EFLAGS: 00010293
RAX: ffffffff825e2c53 RBX: ffff888023a45080 RCX: ffff88801b8c8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff825e261c R09: ffffed1004748a11
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888023a45000
R13: dffffc0000000000 R14: ffff888021c62000 R15: dffffc0000000000
FS:  00007fe34a83c6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe34249c000 CR3: 0000000022ca1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x58c/0x630 fs/hfsplus/btree.c:414
 hfs_btree_inc_height+0x11a/0xdb0 fs/hfsplus/brec.c:475
 hfsplus_brec_insert+0x776/0xdd0 fs/hfsplus/brec.c:148
 hfsplus_create_cat+0xeea/0x1ba0 fs/hfsplus/catalog.c:308
 hfsplus_mknod+0x166/0x2a0 fs/hfsplus/dir.c:494
 vfs_create+0x306/0x490 fs/namei.c:3115
 do_mknodat+0x3f5/0x690 fs/namei.c:3965
 __do_sys_mknodat fs/namei.c:3993 [inline]
 __se_sys_mknodat fs/namei.c:3990 [inline]
 __x64_sys_mknodat+0xa5/0xc0 fs/namei.c:3990
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe34a87fd59
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 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:00007fe34a83c218 EFLAGS: 00000246 ORIG_RAX: 0000000000000103
RAX: ffffffffffffffda RBX: 00007fe34a9086c8 RCX: 00007fe34a87fd59
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 00000000ffffff9c
RBP: 00007fe34a9086c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000103 R11: 0000000000000246 R12: 00007fe34a8d4073
R13: 00007fe34a8d407b R14: e5652d70fedcf551 R15: 00007fe34a8d406b
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfsplus_bnode_put+0x6b3/0x6d0 fs/hfsplus/bnode.c:618
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 6c fd ff ff 48 89 df e8 de 89 82 ff e9 5f fd ff ff e8 e4 e7 2b ff 0f 0b e8 dd e7 2b ff <0f> 0b e8 d6 e7 2b ff 0f 0b e8 cf e7 2b ff 0f 0b 66 2e 0f 1f 84 00
RSP: 0018:ffffc900058b7530 EFLAGS: 00010293
RAX: ffffffff825e2c53 RBX: ffff888023a45080 RCX: ffff88801b8c8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff825e261c R09: ffffed1004748a11
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888023a45000
R13: dffffc0000000000 R14: ffff888021c62000 R15: dffffc0000000000
FS:  00007fe34a83c6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe34249bd58 CR3: 0000000022ca1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/09/15 04:47 linux-6.1.y 09045dae0d90 0b6a67ac .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan kernel BUG in hfsplus_bnode_put
2023/06/17 11:51 linux-6.1.y ca87e77a2ef8 f3921d4d .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 kernel BUG in hfsplus_bnode_put
2024/05/02 23:06 linux-6.1.y 909ba1f1b414 ddfc15a1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in hfsplus_bnode_put
2024/02/14 06:52 linux-6.1.y f1bb70486c9c d902085f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in hfsplus_bnode_put
* Struck through repros no longer work on HEAD.