syzbot


possible deadlock in hfsplus_find_init

Status: upstream: reported C repro on 2023/03/15 11:24
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+ca6703aab96175fc4f6f@syzkaller.appspotmail.com
First crash: 429d, last: 1d09h
Bug presence (1)
Date Name Commit Repro Result
2023/05/28 upstream (ToT) 7877cb91f108 C [report] possible deadlock in hfsplus_find_init
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 possible deadlock in hfsplus_find_init hfsplus C 4 439d 507d 0/1 upstream: reported C repro on 2022/12/27 19:37
linux-4.19 possible deadlock in hfsplus_find_init hfsplus C error 9 493d 531d 0/1 upstream: reported C repro on 2022/12/03 13:19
linux-5.15 possible deadlock in hfsplus_find_init origin:upstream C 39 5d02h 407d 0/3 upstream: reported C repro on 2023/04/06 17:26
upstream possible deadlock in hfsplus_find_init hfs C error error 436 2d05h 512d 0/26 upstream: reported C repro on 2022/12/22 07:31
Fix bisection attempts (5)
Created Duration User Patch Repo Result
2024/02/25 05:51 1h35m bisect fix linux-6.1.y job log (0) log
2024/01/05 11:35 1h00m bisect fix linux-6.1.y job log (0) log
2023/12/06 05:01 1h03m bisect fix linux-6.1.y job log (0) log
2023/11/06 00:55 2h01m bisect fix linux-6.1.y job log (0) log
2023/10/04 03:37 1h15m bisect fix linux-6.1.y job log (0) log

Sample crash report:
============================================
WARNING: possible recursive locking detected
6.1.30-syzkaller #0 Not tainted
--------------------------------------------
kworker/u4:1/11 is trying to acquire lock:
ffff88807b65c0b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfsplus_find_init+0x146/0x1c0

but task is already holding lock:
ffff88807b65c0b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfsplus_find_init+0x146/0x1c0

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&tree->tree_lock/1);
  lock(&tree->tree_lock/1);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

5 locks held by kworker/u4:1/11:
 #0: ffff888015686938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x77a/0x11f0
 #1: ffffc90000107d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7bd/0x11f0 kernel/workqueue.c:2264
 #2: ffff88807deea988 (&hip->extents_lock){+.+.}-{3:3}, at: hfsplus_ext_write_extent+0x8a/0x1f0 fs/hfsplus/extents.c:149
 #3: ffff88807b65c0b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfsplus_find_init+0x146/0x1c0
 #4: ffff88807dee8108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1d2/0x1b10 fs/hfsplus/extents.c:457

stack backtrace:
CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 6.1.30-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_deadlock_bug kernel/locking/lockdep.c:2991 [inline]
 check_deadlock kernel/locking/lockdep.c:3034 [inline]
 validate_chain+0x4726/0x58e0 kernel/locking/lockdep.c:3819
 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5056
 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5669
 __mutex_lock_common+0x1d4/0x2520 kernel/locking/mutex.c:603
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
 hfsplus_find_init+0x146/0x1c0
 hfsplus_ext_read_extent fs/hfsplus/extents.c:216 [inline]
 hfsplus_file_extend+0x40a/0x1b10 fs/hfsplus/extents.c:461
 hfsplus_bmap_reserve+0x101/0x4e0 fs/hfsplus/btree.c:358
 __hfsplus_ext_write_extent+0x2a4/0x5b0 fs/hfsplus/extents.c:104
 hfsplus_ext_write_extent_locked fs/hfsplus/extents.c:139 [inline]
 hfsplus_ext_write_extent+0x166/0x1f0 fs/hfsplus/extents.c:150
 hfsplus_write_inode+0x1e/0x5c0 fs/hfsplus/super.c:154
 write_inode fs/fs-writeback.c:1443 [inline]
 __writeback_single_inode+0x67d/0x11e0 fs/fs-writeback.c:1655
 writeback_sb_inodes+0xc21/0x1ac0 fs/fs-writeback.c:1881
 wb_writeback+0x49d/0xe10 fs/fs-writeback.c:2055
 wb_do_writeback fs/fs-writeback.c:2198 [inline]
 wb_workfn+0x427/0x1020 fs/fs-writeback.c:2238
 process_one_work+0x8aa/0x11f0 kernel/workqueue.c:2289
 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2436
 kthread+0x26e/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>

Crashes (70):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/05/28 14:16 linux-6.1.y a343b0dd87b4 cf184559 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan possible deadlock in hfsplus_find_init
2024/03/18 10:01 linux-6.1.y d7543167affd d615901c .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/03/17 23:44 linux-6.1.y d7543167affd d615901c .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/06/03 21:57 linux-6.1.y d2869ace6eeb a4ae4f42 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/07/23 02:32 linux-6.1.y a456e1743881 27cbe77f .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan possible deadlock in hfsplus_find_init
2024/04/13 07:10 linux-6.1.y bf1e3b1cb1e0 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan possible deadlock in hfsplus_find_init
2024/05/16 21:18 linux-6.1.y 909ba1f1b414 c2e07261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/05/15 22:46 linux-6.1.y 909ba1f1b414 94b087b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/05/14 04:25 linux-6.1.y 909ba1f1b414 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/05/14 03:03 linux-6.1.y 909ba1f1b414 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/05/07 14:06 linux-6.1.y 909ba1f1b414 cb2dcc0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/05/04 03:24 linux-6.1.y 909ba1f1b414 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/04/29 08:57 linux-6.1.y f2295faba5e8 27e33c58 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/04/27 04:00 linux-6.1.y 6741e066ec76 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/04/23 08:38 linux-6.1.y 6741e066ec76 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/04/22 12:29 linux-6.1.y 6741e066ec76 36c961ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/04/22 09:59 linux-6.1.y 6741e066ec76 36c961ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/04/20 06:24 linux-6.1.y 6741e066ec76 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/04/15 03:22 linux-6.1.y cd5d98c0556c c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/04/14 17:00 linux-6.1.y cd5d98c0556c c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/04/14 11:19 linux-6.1.y cd5d98c0556c c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/04/13 15:48 linux-6.1.y cd5d98c0556c c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/04/07 03:01 linux-6.1.y 347385861c50 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/03/22 22:19 linux-6.1.y d7543167affd 4b6cdce6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/01/17 14:04 linux-6.1.y fec3b1451d5f c9a1c95b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2024/01/17 12:33 linux-6.1.y fec3b1451d5f c9a1c95b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/06/14 08:09 linux-6.1.y 2f3918bc53fb d2ee9228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan possible deadlock in hfsplus_find_init
2023/06/13 20:03 linux-6.1.y 2f3918bc53fb d2ee9228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan possible deadlock in hfsplus_find_init
2023/06/08 10:03 linux-6.1.y 76ba310227d2 058b3a5a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan possible deadlock in hfsplus_find_init
2023/05/30 19:42 linux-6.1.y d2869ace6eeb df37c7f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan possible deadlock in hfsplus_find_init
2023/05/25 08:36 linux-6.1.y a343b0dd87b4 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan possible deadlock in hfsplus_find_init
2023/08/11 13:17 linux-6.1.y 1321ab403b38 da3c3ef8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/07/31 00:51 linux-6.1.y d2a6dc4eaf6d 2a0d0f29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/06/14 18:04 linux-6.1.y ca87e77a2ef8 d2ee9228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/06/02 03:07 linux-6.1.y d2869ace6eeb a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/05/30 22:14 linux-6.1.y d2869ace6eeb df37c7f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/05/26 21:19 linux-6.1.y a343b0dd87b4 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/05/24 17:41 linux-6.1.y fa74641fb6b9 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/05/17 11:10 linux-6.1.y bf4ad6fa4e53 eaac4681 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/05/16 21:45 linux-6.1.y bf4ad6fa4e53 11c89444 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/05/04 09:36 linux-6.1.y ca48fc16c493 5b7ff9dd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/05/03 01:43 linux-6.1.y ca48fc16c493 48e0a81d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/05/02 17:48 linux-6.1.y ca48fc16c493 52d40fd2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/05/01 04:54 linux-6.1.y ca48fc16c493 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/29 02:15 linux-6.1.y ca1c9012c941 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/27 07:00 linux-6.1.y ca1c9012c941 19a3dabe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/25 17:38 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/25 06:26 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/21 01:58 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/21 01:43 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/16 09:46 linux-6.1.y 0102425ac76b ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/13 21:53 linux-6.1.y 0102425ac76b 3cfcaa1b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/12 14:05 linux-6.1.y 543aff194ab6 1a1596b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/12 05:12 linux-6.1.y 543aff194ab6 49faf98d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/11 19:55 linux-6.1.y 543aff194ab6 49faf98d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/11 16:19 linux-6.1.y 543aff194ab6 49faf98d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/11 00:02 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/10 00:44 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/09 20:35 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/06 11:06 linux-6.1.y 3b29299e5f60 08707520 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/04/03 09:18 linux-6.1.y 3b29299e5f60 41147e3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/03/28 18:11 linux-6.1.y e3a87a10f259 fc067f05 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/03/27 10:21 linux-6.1.y e3a87a10f259 f8f96aa9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/03/24 18:29 linux-6.1.y e3a87a10f259 9700afae .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/03/22 16:05 linux-6.1.y e3a87a10f259 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/03/21 19:58 linux-6.1.y 7eaef76fbc46 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/03/20 15:41 linux-6.1.y 7eaef76fbc46 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
2023/03/15 11:24 linux-6.1.y 6449a0ba6843 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 possible deadlock in hfsplus_find_init
* Struck through repros no longer work on HEAD.