------------[ cut here ]------------ WARNING: CPU: 0 PID: 7876 at fs/ext4/inode.c:3794 ext4_iomap_begin+0x16c5/0x1900 fs/ext4/inode.c:3794 Modules linked in: CPU: 0 UID: 0 PID: 7876 Comm: syz.5.229 Tainted: G W 6.17.0-rc1-syzkaller-00165-gee94b00c1a64 #0 PREEMPT_{RT,(full)} Tainted: [W]=WARN 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 de 48 55 ff c7 44 24 20 09 00 00 00 e9 18 f5 ff ff e8 cc 48 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:ffffc90004c37520 EFLAGS: 00010293 RAX: ffffffff82691274 RBX: ffff8880665023d8 RCX: ffff8880240e9dc0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004c376b8 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed100cca047c R12: dffffc0000000000 R13: 1ffff1100cca04f8 R14: 0000000000000000 R15: 00000000000000d4 FS: 00007ff94eade6c0(0000) GS:ffff8881268c5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b564a4a7b0 CR3: 000000001eb8a000 CR4: 00000000003526f0 Call Trace: iomap_iter+0x531/0xde0 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 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5d2/0xb40 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+0x196/0x220 fs/read_write.c:798 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: 0033:0x7ff95087ebe9 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:00007ff94eade038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007ff950aa5fa0 RCX: 00007ff95087ebe9 RDX: 0000000000000001 RSI: 0000200000000880 RDI: 0000000000000004 RBP: 00007ff950901e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000083 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff950aa6038 R14: 00007ff950aa5fa0 R15: 00007ffee97be048