WARNING in ext4_iomap

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	WARNING in ext4_iomap_begin (2) origin:upstream	-1	C		done	10	73d	158d	3/3	fixed on 2025/07/16 19:57
linux-6.6	WARNING in ext4_iomap_begin	-1				1	1d16h	1d16h	0/2	upstream: reported on 2025/08/27 01:08
linux-6.1	WARNING in ext4_iomap_begin	-1				1	764d	764d	0/3	auto-obsoleted due to no activity on 2023/11/02 21:33
upstream	WARNING in ext4_iomap_begin ext4	-1	C	inconclusive	error	16	1113d	1141d	0/29	auto-obsoleted due to no activity on 2023/04/04 00:54
upstream	WARNING in ext4_iomap_begin (2) ext4	-1	C	done		7	688d	803d	25/29	fixed on 2023/12/21 03:45
linux-5.15	WARNING in ext4_iomap_begin origin:upstream	-1	C		done	8	80d	114d	3/3	fixed on 2025/07/14 10:31
upstream	WARNING in ext4_iomap_begin (3) ext4	-1	C	inconclusive		65	1d01h	301d	0/29	upstream: reported C repro on 2024/10/31 12:34
linux-5.15	WARNING in ext4_iomap_begin (2) origin:upstream	-1	C			7	8d08h	17d	0/3	upstream: reported C repro on 2025/08/11 00:02

------------[ cut here ]------------ WARNING: CPU: 1 PID: 5990 at fs/ext4/inode.c:3466 ext4_iomap_begin+0x977/0xae0 fs/ext4/inode.c:3466 Modules linked in: CPU: 1 PID: 5990 Comm: syz.0.285 Not tainted 6.1.148-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:ext4_iomap_begin+0x977/0xae0 fs/ext4/inode.c:3466 Code: 3b 84 24 20 01 00 00 75 6d 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e3 f3 5e ff e9 73 ff ff ff e8 d9 f3 5e ff <0f> 0b 41 be de ff ff ff 49 bf 00 00 00 00 00 fc ff df eb 85 89 d9 RSP: 0018:ffffc90004ccf620 EFLAGS: 00010287 RAX: ffffffff8221ca87 RBX: ffff888055fe53ba RCX: 0000000000080000 RDX: ffffc90005a49000 RSI: 0000000000003b8c RDI: 0000000000003b8d RBP: ffffc90004ccf790 R08: dffffc0000000000 R09: ffffed100abfca13 R10: ffffed100abfca13 R11: 1ffff1100abfca12 R12: 00000000000000d4 R13: 1ffff1100abfca77 R14: 000000000000000b R15: 0000000000000000 FS: 00007f5e51fa96c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe4c4c4b000 CR3: 000000005b26b000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> iomap_iter+0x6c6/0x1040 fs/iomap/iter.c:91 __iomap_dio_rw+0xcba/0x1dd0 fs/iomap/direct-io.c:601 iomap_dio_rw+0x41/0xa0 fs/iomap/direct-io.c:690 ext4_dio_write_iter fs/ext4/file.c:557 [inline] ext4_file_write_iter+0x1262/0x16e0 fs/ext4/file.c:677 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x44c/0x960 fs/read_write.c:584 ksys_pwrite64 fs/read_write.c:699 [inline] __do_sys_pwrite64 fs/read_write.c:709 [inline] __se_sys_pwrite64 fs/read_write.c:706 [inline] __x64_sys_pwrite64+0x191/0x220 fs/read_write.c:706 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f5e5118ebe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5e51fa9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007f5e513b5fa0 RCX: 00007f5e5118ebe9 RDX: 0000000000000001 RSI: 0000200000000880 RDI: 0000000000000004 RBP: 00007f5e51211e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000083 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5e513b6038 R14: 00007f5e513b5fa0 R15: 00007ffca776c018 </TASK>

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2025/08/24 16:23	linux-6.1.y	0bc96de781b4	bf27483f	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-6-1-kasan	WARNING in ext4_iomap_begin

Crashes (1):

Assets (help?)