------------[ cut here ]------------ WARNING: CPU: 0 PID: 5583 at fs/ext4/inode.c:3438 ext4_iomap_begin+0xa12/0xb70 fs/ext4/inode.c:3438 Modules linked in: CPU: 1 PID: 5583 Comm: syz.0.74 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:ext4_iomap_begin+0xa12/0xb70 fs/ext4/inode.c:3438 Code: 89 d8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e2 6e 6e ff 49 bd 00 00 00 00 00 fc ff df e9 70 ff ff ff e8 ce 6e 6e ff <0f> 0b bb de ff ff ff e9 04 f7 ff ff 89 d9 80 e1 07 38 c1 0f 8c 9d RSP: 0018:ffffc900037df640 EFLAGS: 00010293 RAX: ffffffff820a83d2 RBX: ffff8880584f0d62 RCX: ffff8880276f1dc0 RDX: 0000000000000000 RSI: 00000000000000d4 RDI: 0000000000000000 RBP: ffffc900037df7c0 R08: ffff8880584f0a4f R09: 1ffff1100b09e149 R10: dffffc0000000000 R11: ffffed100b09e14a R12: 00000000000000d4 R13: 1ffff1100b09e1ac R14: 000000000000000b R15: 0000000000000000 FS: 00007f6eeb08f6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb8b1ac9368 CR3: 000000001fe3e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: iomap_iter+0x604/0xda0 fs/iomap/iter.c:74 __iomap_dio_rw+0xafd/0x1ba0 fs/iomap/direct-io.c:589 iomap_dio_rw+0x38/0x90 fs/iomap/direct-io.c:676 ext4_dio_write_iter fs/ext4/file.c:540 [inline] ext4_file_write_iter+0x12e6/0x1720 fs/ext4/file.c:660 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x748/0xd70 fs/read_write.c:594 ksys_pwrite64 fs/read_write.c:701 [inline] __do_sys_pwrite64 fs/read_write.c:711 [inline] __se_sys_pwrite64 fs/read_write.c:708 [inline] __x64_sys_pwrite64+0x197/0x220 fs/read_write.c:708 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f6eeba2b339 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6eeb08f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007f6eebc66fa0 RCX: 00007f6eeba2b339 RDX: 0000000000000001 RSI: 0000200000000880 RDI: 0000000000000006 RBP: 00007f6eebabed68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000083 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6eebc67038 R14: 00007f6eebc66fa0 R15: 00007ffc7c1560f8