WARNING in hfsplus_free_extents

Status: upstream: reported C repro on 2022/12/19 07:06
Subsystems: hfsplus
[Documentation on labels]
Reported-by: syzbot+50ac7d3932d9115a84da@syzkaller.appspotmail.com
First crash: 1315d, last: 1238d
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in hfsplus_free_extents -1 C error 44 399d 1045d 0/3 auto-obsoleted due to no activity on 2025/09/30 14:37
upstream WARNING in hfsplus_free_extents hfs -1 C error 402 368d 1329d 29/29 fixed on 2025/09/04 16:57
linux-5.15 WARNING in hfsplus_free_extents origin:upstream -1 C error 24 358d 1166d 0/3 auto-obsoleted due to no activity on 2025/11/10 13:23
linux-6.6 WARNING in hfsplus_free_extents -1 1 364d 364d 0/2 auto-obsoleted due to no activity on 2025/11/04 03:02

Sample crash report:
Bluetooth: hci3: command 0x0406 tx timeout
Bluetooth: hci2: command 0x0406 tx timeout
Bluetooth: hci4: command 0x0406 tx timeout
------------[ cut here ]------------
Bluetooth: hci1: command 0x0406 tx timeout
WARNING: CPU: 1 PID: 14705 at fs/hfsplus/extents.c:346 hfsplus_free_extents.cold+0x27/0x44 fs/hfsplus/extents.c:346
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 14705 Comm: syz-executor335 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x5a kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:hfsplus_free_extents.cold+0x27/0x44 fs/hfsplus/extents.c:346
Code: 9c 04 fa e8 b7 43 6c f9 48 c7 c7 e0 74 7d 88 e8 16 75 fd ff e9 b7 a6 04 fa e8 a1 43 6c f9 48 c7 c7 40 74 7d 88 e8 00 75 fd ff <0f> 0b e9 1b a5 04 fa e8 89 43 6c f9 48 c7 c7 e0 74 7d 88 e8 e8 74
RSP: 0018:ffff8880b4eef7f0 EFLAGS: 00010282
RAX: 0000000000000024 RBX: ffff8880868d80d8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed10169ddef0
RBP: 0000000000000001 R08: 0000000000000024 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b3e00080
R13: ffff8880879c8c00 R14: ffff88809dd9c500 R15: 0000000000000000
 hfsplus_file_truncate+0xd96/0x1040 fs/hfsplus/extents.c:591
 hfsplus_setattr+0x1e7/0x310 fs/hfsplus/inode.c:263
 notify_change+0x70b/0xfc0 fs/attr.c:334
 do_truncate+0x134/0x1f0 fs/open.c:63
 handle_truncate fs/namei.c:3009 [inline]
 do_last fs/namei.c:3427 [inline]
 path_openat+0x2308/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 do_sys_open+0x3b3/0x520 fs/open.c:1085
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7feb2e3c1699
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007feb2db60278 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007feb2e43f7a0 RCX: 00007feb2e3c1699
RDX: 0000000000000000 RSI: 0000000000143242 RDI: 0000000020000000
RBP: 00007feb2e40bc3c R08: 65732f636f72702f R09: 65732f636f72702f
R10: 00000000000005f2 R11: 0000000000000246 R12: 00007feb2db60280
R13: 8000000000000000 R14: 000000031cdb59c6 R15: 00007feb2e43f7a8
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (29):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/12/26 19:35 linux-4.19.y 3f8a27f9e27b 9da18ae8 .config console log report syz C [disk image] [vmlinux] [mounted in repro] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/01/25 11:00 linux-4.19.y 3f8a27f9e27b 9dfcf09c .config console log report syz [disk image] [vmlinux] [mounted in repro] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/01/02 05:39 linux-4.19.y 3f8a27f9e27b ab32d508 .config console log report syz [disk image] [vmlinux] [mounted in repro] ci2-linux-4-19 WARNING in hfsplus_free_extents
2022/12/22 10:02 linux-4.19.y 3f8a27f9e27b 4067838e .config console log report syz [disk image] [vmlinux] [mounted in repro] ci2-linux-4-19 WARNING in hfsplus_free_extents
2022/12/21 23:17 linux-4.19.y 3f8a27f9e27b 4067838e .config console log report syz [disk image] [vmlinux] [mounted in repro] ci2-linux-4-19 WARNING in hfsplus_free_extents
2022/12/19 08:38 linux-4.19.y 3f8a27f9e27b 05494336 .config console log report syz [disk image] [vmlinux] [mounted in repro] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/03/06 04:09 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/03/04 22:54 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/22 03:28 linux-4.19.y 3f8a27f9e27b 42a4d508 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/21 14:42 linux-4.19.y 3f8a27f9e27b f949448d .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/18 17:39 linux-4.19.y 3f8a27f9e27b d02e9a70 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/17 10:32 linux-4.19.y 3f8a27f9e27b 3e7039f4 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/17 01:51 linux-4.19.y 3f8a27f9e27b 851bc19a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/16 12:39 linux-4.19.y 3f8a27f9e27b 38b317a7 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/15 05:11 linux-4.19.y 3f8a27f9e27b e62ba3c1 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/14 02:42 linux-4.19.y 3f8a27f9e27b 93ae7e0a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/09 16:29 linux-4.19.y 3f8a27f9e27b 07980f9d .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/07 23:23 linux-4.19.y 3f8a27f9e27b 15c3d445 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/05 07:32 linux-4.19.y 3f8a27f9e27b be607b78 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/02/02 06:26 linux-4.19.y 3f8a27f9e27b 9a6f477c .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/01/27 12:29 linux-4.19.y 3f8a27f9e27b 9dfcf09c .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/01/21 19:11 linux-4.19.y 3f8a27f9e27b cc0f9968 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/01/18 10:18 linux-4.19.y 3f8a27f9e27b 42660d9e .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/01/15 09:41 linux-4.19.y 3f8a27f9e27b a63719e7 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/01/13 23:47 linux-4.19.y 3f8a27f9e27b 529798b0 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/01/05 22:38 linux-4.19.y 3f8a27f9e27b 1dac8c7a .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2023/01/03 07:08 linux-4.19.y 3f8a27f9e27b ab32d508 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2022/12/22 05:19 linux-4.19.y 3f8a27f9e27b 4067838e .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
2022/12/19 07:05 linux-4.19.y 3f8a27f9e27b 05494336 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 WARNING in hfsplus_free_extents
* Struck through repros no longer work on HEAD.