EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5967 at fs/ext4/inode.c:3794 ext4_iomap_begin+0x16c5/0x1900 fs/ext4/inode.c:3794 Modules linked in: CPU: 1 UID: 0 PID: 5967 Comm: syz.0.1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:ext4_iomap_begin+0x16c5/0x1900 fs/ext4/inode.c:3794 Code: 24 18 39 c3 0f 42 c3 41 01 c7 41 89 dc e9 3c f5 ff ff e8 8e 3e 55 ff c7 44 24 20 09 00 00 00 e9 18 f5 ff ff e8 7c 3e 55 ff 90 <0f> 0b 90 41 be de ff ff ff 4c 8b 7c 24 70 e9 18 ed ff ff 89 d9 80 RSP: 0018:ffffc900055570a0 EFLAGS: 00010283 RAX: ffffffff82691dd4 RBX: ffff88803e18afb0 RCX: 0000000000080000 RDX: ffffc9000dc21000 RSI: 0000000000000f6a RDI: 0000000000000f6b RBP: ffffc90005557238 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1007c315f7 R12: dffffc0000000000 R13: 1ffff11007c31673 R14: 0000000000000000 R15: 00000000000000d4 FS: 00007fae508fe6c0(0000) GS:ffff8881269c2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000040 CR3: 00000000278e8000 CR4: 00000000003526f0 Call Trace: iomap_iter+0x534/0xde0 fs/iomap/iter.c:108 __iomap_dio_rw+0xc5a/0x1e30 fs/iomap/direct-io.c:728 iomap_dio_rw+0x45/0xb0 fs/iomap/direct-io.c:818 ext4_dio_write_iter fs/ext4/file.c:580 [inline] ext4_file_write_iter+0x16ae/0x1be0 fs/ext4/file.c:721 iter_file_splice_write+0x977/0x10f0 fs/splice.c:738 do_splice_from fs/splice.c:938 [inline] direct_splice_actor+0x101/0x160 fs/splice.c:1161 splice_direct_to_actor+0x5b0/0xcd0 fs/splice.c:1105 do_splice_direct_actor fs/splice.c:1204 [inline] do_splice_direct+0x187/0x270 fs/splice.c:1230 do_sendfile+0x4ec/0x7f0 fs/read_write.c:1370 __do_sys_sendfile64 fs/read_write.c:1431 [inline] __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fae5269ebe9 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:00007fae508fe038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fae528c5fa0 RCX: 00007fae5269ebe9 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007fae52721e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fae528c6038 R14: 00007fae528c5fa0 R15: 00007fff64f6cc88