WARNING: CPU: 0 PID: 6120 at fs/ext4/inode.c:3415 ext4_iomap_begin+0x967/0xad0 fs/ext4/inode.c:3415 Modules linked in: CPU: 0 UID: 0 PID: 6120 Comm: syz.1.30 Not tainted 6.15.0-rc5-syzkaller-00032-g0d8d44db295c #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025 RIP: 0010:ext4_iomap_begin+0x967/0xad0 fs/ext4/inode.c:3415 Code: 00 75 74 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 d4 f6 50 ff e9 73 ff ff ff e8 ca f6 50 ff 90 <0f> 0b 90 41 be de ff ff ff 49 bf 00 00 00 00 00 fc ff df eb 82 89 RSP: 0018:ffffc90002edf0e0 EFLAGS: 00010293 RAX: ffffffff826ed896 RBX: ffff888053fc83b2 RCX: ffff888024be1e00 RDX: 0000000000000000 RSI: 00000000000000d4 RDI: 0000000000000000 RBP: ffffc90002edf238 R08: ffff888053fc8057 R09: 1ffff1100a7f900a R10: dffffc0000000000 R11: ffffed100a7f900b R12: 00000000000000d4 R13: 1ffff1100a7f9076 R14: 000000000000000a R15: 0000000000000000 FS: 00007ff3641296c0(0000) GS:ffff8881260fd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff364128f98 CR3: 0000000061d74000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: iomap_iter+0x537/0xdf0 fs/iomap/iter.c:109 __iomap_dio_rw+0xc67/0x1e40 fs/iomap/direct-io.c:733 iomap_dio_rw+0x45/0xb0 fs/iomap/direct-io.c:823 ext4_dio_write_iter fs/ext4/file.c:575 [inline] ext4_file_write_iter+0x16a2/0x1bc0 fs/ext4/file.c:716 iter_file_splice_write+0x937/0x1000 fs/splice.c:738 do_splice_from fs/splice.c:935 [inline] direct_splice_actor+0xfe/0x160 fs/splice.c:1158 splice_direct_to_actor+0x5a5/0xcc0 fs/splice.c:1102 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x181/0x270 fs/splice.c:1227 do_sendfile+0x4da/0x7d0 fs/read_write.c:1368 __do_sys_sendfile64 fs/read_write.c:1429 [inline] __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1415 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff36338e969 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:00007ff364129038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007ff3635b6080 RCX: 00007ff36338e969 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007ff363410ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000014000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007ff3635b6080 R15: 00007fff6e6c13e8