------------[ cut here ]------------ kernel BUG at fs/ext4/ext4_extents.h:200! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5705 Comm: syz-executor.5 Not tainted 6.5.0-rc7-syzkaller-00093-gf8d6ff449094 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:ext4_ext_mark_unwritten fs/ext4/ext4_extents.h:200 [inline] RIP: 0010:ext4_split_extent_at+0x10ea/0x1100 fs/ext4/extents.c:3221 Code: 9d ac ff 4c 8b 74 24 70 48 8b 74 24 38 e9 43 fa ff ff e8 c9 ca 53 ff 0f 0b e8 c2 ca 53 ff 0f 0b e8 7b f3 84 08 e8 b6 ca 53 ff <0f> 0b e8 af ca 53 ff 0f 0b e8 a8 ca 53 ff 0f 0b 66 0f 1f 44 00 00 RSP: 0018:ffffc90005ae6e80 EFLAGS: 00010293 RAX: ffffffff8237ed7a RBX: 0000000000000000 RCX: ffff888028120000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90005ae6fe8 R08: ffffffff8237e15c R09: 1ffff1100ebfff05 R10: dffffc0000000000 R11: ffffed100ebfff06 R12: 0000000000000000 R13: ffff888141b55000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007fd4dd2576c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f577e59d988 CR3: 000000001ea14000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_split_extent+0x370/0x4e0 fs/ext4/extents.c:3384 ext4_split_convert_extents fs/ext4/extents.c:3712 [inline] ext4_ext_handle_unwritten_extents fs/ext4/extents.c:3874 [inline] ext4_ext_map_blocks+0x22cf/0x71d0 fs/ext4/extents.c:4166 ext4_map_blocks+0xa2f/0x1cb0 fs/ext4/inode.c:621 ext4_iomap_alloc fs/ext4/inode.c:3276 [inline] ext4_iomap_begin+0x8e4/0xd30 fs/ext4/inode.c:3326 iomap_iter+0x677/0xec0 fs/iomap/iter.c:91 __iomap_dio_rw+0xd58/0x2250 fs/iomap/direct-io.c:574 iomap_dio_rw+0x46/0xa0 fs/iomap/direct-io.c:665 ext4_dio_write_iter fs/ext4/file.c:609 [inline] ext4_file_write_iter+0x16a0/0x1b10 fs/ext4/file.c:720 call_write_iter include/linux/fs.h:1877 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x782/0xaf0 fs/read_write.c:584 ksys_write+0x1a0/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd4dc47c959 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd4dd2570c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fd4dc59c050 RCX: 00007fd4dc47c959 RDX: 0000000000000012 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007fd4dc4d8c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fd4dc59c050 R15: 00007ffc217010d8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_ext_mark_unwritten fs/ext4/ext4_extents.h:200 [inline] RIP: 0010:ext4_split_extent_at+0x10ea/0x1100 fs/ext4/extents.c:3221 Code: 9d ac ff 4c 8b 74 24 70 48 8b 74 24 38 e9 43 fa ff ff e8 c9 ca 53 ff 0f 0b e8 c2 ca 53 ff 0f 0b e8 7b f3 84 08 e8 b6 ca 53 ff <0f> 0b e8 af ca 53 ff 0f 0b e8 a8 ca 53 ff 0f 0b 66 0f 1f 44 00 00 RSP: 0018:ffffc90005ae6e80 EFLAGS: 00010293 RAX: ffffffff8237ed7a RBX: 0000000000000000 RCX: ffff888028120000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90005ae6fe8 R08: ffffffff8237e15c R09: 1ffff1100ebfff05 R10: dffffc0000000000 R11: ffffed100ebfff06 R12: 0000000000000000 R13: ffff888141b55000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007fd4dd2576c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd786fe86a8 CR3: 000000001ea14000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400