WARNING in xfs_bmapi_convert_delalloc

Status: auto-obsoleted due to no activity on 2024/10/10 08:11
Bug presence: origin:upstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+84aa637d463d7fdfc2b4@syzkaller.appspotmail.com
First crash: 1176d, last: 768d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (3)
Date Name Commit Repro Result
2024/06/30 linux-5.15.y (ToT) 4878aadf2d15 C [report] WARNING in xfs_bmapi_convert_delalloc
2023/05/19 upstream (ToT) 2d1bcbc6cd70 C [report] WARNING in xfs_bmapi_convert_delalloc
2024/06/30 upstream (ToT) 22a40d14b572 C Didn't crash
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in xfs_bmapi_convert_delalloc (3) xfs prio:high -1 1 8d03h 4d03h 0/29 upstream: reported on 2026/08/04 01:05
upstream WARNING in xfs_bmapi_convert_delalloc no-reminders xfs -1 syz, C unreliable done 559 816d 1350d 0/29 auto-obsoleted due to no activity on 2024/07/22 07:09
linux-6.1 WARNING in xfs_bmapi_convert_delalloc origin:upstream missing-backport -1 syz, C inconclusive 7 713d 1177d 0/3 upstream: reported C repro on 2023/05/18 14:29
upstream WARNING in xfs_bmapi_convert_delalloc (2) xfs -1 syz, C 4 495d 590d 0/29 auto-obsoleted due to no activity on 2025/07/08 14:13
linux-5.15 WARNING in xfs_bmapi_convert_delalloc (2) missing-backport origin:upstream -1 syz, C error 2 45d 490d 0/3 upstream: reported C repro on 2025/04/04 07:22
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2024/10/10 07:33 16m retest repro linux-5.15.y OK log
2024/10/10 07:33 20m retest repro linux-5.15.y OK log
▶ ▼ Fix bisection attempts (2)
Created Duration User Patch Repo Result
2024/08/20 19:30 1m fix candidate upstream error job log
2023/09/24 09:07 0m bisect fix linux-5.15.y error job log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 144 at fs/xfs/libxfs/xfs_bmap.c:4641 xfs_bmapi_convert_delalloc+0xe91/0x1180
Modules linked in:
CPU: 1 PID: 144 Comm: kworker/u4:1 Not tainted 5.15.117-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:xfs_bmapi_convert_delalloc+0xe91/0x1180 fs/xfs/libxfs/xfs_bmap.c:4641
Code: 25 a1 8e fe 0f 0b e9 c8 f4 ff ff 89 d9 80 e1 07 38 c1 0f 8c f0 f2 ff ff 48 89 df e8 d9 fc d7 fe e9 e3 f2 ff ff e8 ff a0 8e fe <0f> 0b 41 bd e4 ff ff ff 48 8b 5c 24 08 e9 62 ff ff ff e8 e8 a0 8e
RSP: 0018:ffffc900010bea20 EFLAGS: 00010293
RAX: ffffffff82f15851 RBX: ffffffffffffffff RCX: ffff888015de1dc0
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: ffffc900010bec50 R08: ffffffff82f15267 R09: fffffbfff1bc788e
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffffc900010beb60 R14: ffffc900010beb00 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8b35613000 CR3: 0000000023151000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 xfs_convert_blocks fs/xfs/xfs_aops.c:245 [inline]
 xfs_map_blocks+0xa9e/0x1520 fs/xfs/xfs_aops.c:366
 iomap_writepage_map fs/iomap/buffered-io.c:1320 [inline]
 iomap_do_writepage+0x63c/0x21c0 fs/iomap/buffered-io.c:1485
 write_cache_pages+0xa97/0x1160 mm/page-writeback.c:2255
 iomap_writepages+0x64/0x240 fs/iomap/buffered-io.c:1516
 xfs_vm_writepages+0x127/0x180 fs/xfs/xfs_aops.c:488
 do_writepages+0x481/0x730 mm/page-writeback.c:2364
 __writeback_single_inode+0x15b/0xe30 fs/fs-writeback.c:1625
 writeback_sb_inodes+0xbf0/0x1a50 fs/fs-writeback.c:1908
 wb_writeback+0x451/0xc50 fs/fs-writeback.c:2082
 wb_do_writeback fs/fs-writeback.c:2225 [inline]
 wb_workfn+0x46c/0x1130 fs/fs-writeback.c:2266
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2307
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2454
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/06/16 23:36 linux-5.15.y 471e639e59d1 f3921d4d .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in xfs_bmapi_convert_delalloc
2023/05/19 06:30 linux-5.15.y 9d6bde853685 3bb7af1d .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in xfs_bmapi_convert_delalloc
2023/06/07 01:38 linux-5.15.y d7af3e5ba454 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in xfs_bmapi_convert_delalloc
2023/07/15 11:22 linux-5.15.y d54cfc420586 35d9ecc5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in xfs_bmapi_convert_delalloc
2023/06/21 11:27 linux-5.15.y 471e639e59d1 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in xfs_bmapi_convert_delalloc
2023/06/07 01:44 linux-5.15.y d7af3e5ba454 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in xfs_bmapi_convert_delalloc
* Struck through repros no longer work on HEAD.