syzbot


WARNING in hfsplus_free_extents

Status: upstream: reported C repro on 2023/05/17 17:56
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+4b5f0821b1142785380e@syzkaller.appspotmail.com
First crash: 334d, last: 8d15h
Bug presence (1)
Date Name Commit Repro Result
2023/07/23 upstream (ToT) c2782531397f C [report] WARNING in hfsplus_free_extents
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in hfsplus_free_extents origin:upstream C 8 5d19h 214d 0/3 upstream: reported C repro on 2023/09/15 03:08
linux-4.19 WARNING in hfsplus_free_extents hfsplus C 29 407d 484d 0/1 upstream: reported C repro on 2022/12/19 07:06
upstream WARNING in hfsplus_free_extents hfs C error 207 1d01h 498d 0/26 upstream: reported C repro on 2022/12/05 08:02
Fix bisection attempts (6)
Created Duration User Patch Repo Result
2024/04/03 23:52 1h19m bisect fix linux-5.15.y job log (0) log
2024/03/04 08:13 1h35m bisect fix linux-5.15.y job log (0) log
2024/01/27 09:06 1h10m bisect fix linux-5.15.y job log (0) log
2023/12/27 06:28 1h06m bisect fix linux-5.15.y job log (0) log
2023/11/26 21:29 1h19m bisect fix linux-5.15.y job log (0) log
2023/10/26 15:23 1h09m bisect fix linux-5.15.y job log (0) log

Sample crash report:
loop0: detected capacity change from 0 to 1024
------------[ cut here ]------------
WARNING: CPU: 1 PID: 13706 at fs/hfsplus/extents.c:346 hfsplus_free_extents+0x703/0xae0
Modules linked in:
CPU: 1 PID: 13706 Comm: syz-executor367 Not tainted 5.15.153-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:hfsplus_free_extents+0x703/0xae0 fs/hfsplus/extents.c:346
Code: 0f cb 44 89 ef 89 de e8 ab 85 40 ff 41 39 dd 75 20 49 83 c7 28 e8 3d 84 40 ff 41 bc 05 00 00 00 e9 e2 f9 ff ff e8 2d 84 40 ff <0f> 0b e9 83 f9 ff ff 44 89 ef 89 de e8 7c 85 40 ff 41 29 dd 73 0a
RSP: 0018:ffffc90005e27810 EFLAGS: 00010293

RAX: ffffffff823fb583 RBX: ffff88801d61d020 RCX: ffff88801c111dc0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88807b14c048
RBP: ffff88807c9ac000 R08: dffffc0000000000 R09: ffffed100f62980a
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000155 R14: 000000000000002a R15: ffff8880749e5158
FS:  00007f3dea26e6c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000076d8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_file_truncate+0x763/0xb80 fs/hfsplus/extents.c:606
 hfsplus_write_begin+0xce/0xd0 fs/hfsplus/inode.c:57
 cont_expand_zero fs/buffer.c:2398 [inline]
 cont_write_begin+0x2ad/0x840 fs/buffer.c:2461
 hfsplus_write_begin+0x92/0xd0 fs/hfsplus/inode.c:53
 generic_cont_expand_simple+0x144/0x230 fs/buffer.c:2362
 hfsplus_setattr+0x169/0x280 fs/hfsplus/inode.c:261
 notify_change+0xc6d/0xf50 fs/attr.c:505
 do_truncate+0x21c/0x300 fs/open.c:65
 do_sys_ftruncate+0x2eb/0x390 fs/open.c:193
 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+0x61/0xcb
RIP: 0033:0x7f3deaab9829
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 1b 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:00007f3dea26e218 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f3deab474a8 RCX: 00007f3deaab9829
RDX: 00007f3deaab9829 RSI: 0000000002007fff RDI: 0000000000000004
RBP: 00007f3deab474a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3deab0cdb4
R13: 00007f3deab0c740 R14: 0000000020000cc0 R15: 0073756c70736668
 </TASK>

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/07 18:39 linux-5.15.y 9465fef4ae35 ca620dd8 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2023/07/23 09:09 linux-5.15.y d54cfc420586 27cbe77f .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2023/08/14 01:28 linux-5.15.y 24c4de4069cb 39990d51 .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2023/09/22 07:01 linux-5.15.y 35ecaa3632bf 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2023/09/11 18:36 linux-5.15.y aff03380bda4 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2023/07/26 01:36 linux-5.15.y 5c6a716301d9 6756545c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2023/05/17 17:56 linux-5.15.y 9d6bde853685 eaac4681 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
* Struck through repros no longer work on HEAD.