WARNING in ext4_da_release

Title	Replies (including bot)	Last reply
[PATCH -next v2] ext4: fix warning in 'ext4_da_release_space'	3 (3)	2022/11/06 06:16
[PATCH -next] ext4: fix warning in 'ext4_da_release_space'	1 (1)	2022/10/18 01:24
[syzbot] WARNING in ext4_da_release_space	0 (1)	2022/10/12 10:36

EXT4-fs (loop0): i_reserved_data_blocks=0 EXT4-fs warning (device loop0): ext4_da_release_space:1524: ext4_da_release_space: ino 18, to_free 1 with only 0 reserved data blocks ------------[ cut here ]------------ WARNING: CPU: 0 PID: 11 at fs/ext4/inode.c:1528 ext4_da_release_space+0x4f9/0x680 fs/ext4/inode.c:1524 Modules linked in: CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 6.1.0-rc1-syzkaller-00454-ga70385240892 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Workqueue: writeback wb_workfn (flush-7:0) RIP: 0010:ext4_da_release_space+0x4f9/0x680 fs/ext4/inode.c:1528 Code: 3c 02 00 0f 85 65 01 00 00 48 8b 7d 28 41 89 d9 41 54 ba f4 05 00 00 48 c7 c1 c0 18 03 8a 48 c7 c6 e0 2a 03 8a e8 e7 ce 0f 00 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 0f b6 04 RSP: 0018:ffffc90000107108 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff88813fe7ba80 RSI: ffffffff822bcb78 RDI: fffff52000020df0 RBP: ffff888071d07108 R08: 0000000000000085 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000034545845 R12: 0000000000000000 R13: ffff88807d4e0000 R14: ffff888071d07778 R15: ffff888071d076b8 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbd92cd9290 CR3: 00000000214cc000 CR4: 0000000000350ef0 Call Trace: <TASK> ext4_es_remove_extent+0x25c/0x510 fs/ext4/extents_status.c:1461 mpage_release_unused_pages+0x5a7/0x740 fs/ext4/inode.c:1589 ext4_writepages+0x1539/0x3da0 fs/ext4/inode.c:2852 do_writepages+0x1ab/0x690 mm/page-writeback.c:2469 __writeback_single_inode+0x159/0x1440 fs/fs-writeback.c:1587 writeback_sb_inodes+0x54d/0xf90 fs/fs-writeback.c:1870 wb_writeback+0x2c5/0xd70 fs/fs-writeback.c:2044 wb_do_writeback fs/fs-writeback.c:2187 [inline] wb_workfn+0x2dc/0x12f0 fs/fs-writeback.c:2227 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK>

Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2022/10/24 08:25	upstream	a70385240892	23bf86af	.config	strace log	report	syz	C		[disk image] [vmlinux] [mounted in repro]	ci-upstream-kasan-gce-root	WARNING in ext4_da_release_space
2022/10/12 10:27	upstream	493ffd6605b2	02b6492e	.config	strace log	report	syz	C		[disk image] [vmlinux] [mounted in repro]	ci2-upstream-fs	WARNING in ext4_da_release_space
2023/02/12 04:48	upstream	d12aca5c0cee	93e26d60	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-fs	WARNING in ext4_da_release_space
2023/02/01 06:26	upstream	c0b67534c95c	b68fb8d6	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-fs	WARNING in ext4_da_release_space
2022/10/26 06:25	upstream	1a2dcbdde82e	2159e4d2	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-fs	WARNING in ext4_da_release_space
2022/10/23 17:59	upstream	d47136c28015	23bf86af	.config	console log	report			info	[disk image] [vmlinux]	ci2-upstream-fs	WARNING in ext4_da_release_space
2022/10/18 15:54	upstream	493ffd6605b2	b31320fc	.config	console log	report			info	[disk image] [vmlinux]	ci2-upstream-fs	WARNING in ext4_da_release_space
2022/10/12 10:12	upstream	493ffd6605b2	02b6492e	.config	console log	report			info	[disk image] [vmlinux]	ci2-upstream-fs	WARNING in ext4_da_release_space
2023/01/07 10:09	git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci	ae87308093bc	1dac8c7a	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-gce-arm64	WARNING in ext4_da_release_space