------------[ cut here ]------------ WARNING: fs/ext4/inode.c:3794 at ext4_iomap_begin+0x16c5/0x1900 fs/ext4/inode.c:3794, CPU#1: syz.0.337/7466 Modules linked in: CPU: 1 UID: 0 PID: 7466 Comm: syz.0.337 Not tainted syzkaller #0 PREEMPT(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 9e 54 4b ff c7 44 24 20 09 00 00 00 e9 18 f5 ff ff e8 8c 54 4b 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:ffffc90003b1f520 EFLAGS: 00010283 RAX: ffffffff82757134 RBX: ffff8880570fb9b0 RCX: 0000000000080000 RDX: ffffc9000bb3a000 RSI: 000000000000073a RDI: 000000000000073b RBP: ffffc90003b1f6b8 R08: ffff8880570fb9b7 R09: 1ffff1100ae1f736 R10: dffffc0000000000 R11: ffffed100ae1f737 R12: dffffc0000000000 R13: 1ffff1100ae1f797 R14: 0000000000000000 R15: 00000000000000d4 FS: 00007fa6ad27f6c0(0000) GS:ffff888125af9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32b63fff CR3: 00000000272e4000 CR4: 00000000003526f0 Call Trace: iomap_iter+0x534/0xde0 fs/iomap/iter.c:108 __iomap_dio_rw+0xc57/0x1e30 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+0x16a2/0x1bc0 fs/ext4/file.c:721 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_pwrite64 fs/read_write.c:793 [inline] __do_sys_pwrite64 fs/read_write.c:801 [inline] __se_sys_pwrite64 fs/read_write.c:798 [inline] __x64_sys_pwrite64+0x193/0x220 fs/read_write.c:798 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa6ac38ebe9 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:00007fa6ad27f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007fa6ac5c5fa0 RCX: 00007fa6ac38ebe9 RDX: 0000000000000001 RSI: 0000200000000880 RDI: 0000000000000004 RBP: 00007fa6ac411e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000083 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa6ac5c6038 R14: 00007fa6ac5c5fa0 R15: 00007ffc7ccba1c8