------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2564! invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 PID: 5747 Comm: syz-executor.2 Not tainted 6.9.0-rc4-syzkaller-00173-g3cdb45594619 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:ext4_do_writepages+0x3d38/0x3d40 fs/ext4/inode.c:2563 Code: 4e 8e 4c 89 f2 e8 c8 86 8a 02 e9 ab fb ff ff e8 3e 7f 40 ff 90 0f 0b e8 36 7f 40 ff 90 0f 0b e8 8e 6c 21 09 e8 29 7f 40 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90009ab7380 EFLAGS: 00010293 RAX: ffffffff82558147 RBX: 0000004000000000 RCX: ffff888027fd9e00 RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000 RBP: ffffc90009ab7790 R08: ffffffff82554923 R09: 1ffff1100d382b4a R10: dffffc0000000000 R11: ffffed100d382b4b R12: 0000000000000001 R13: 0000000000400040 R14: 0000006a10000000 R15: ffff888069c15cb0 FS: 00007fe8a5a106c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff0f793fb8 CR3: 000000002e85c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_writepages+0x213/0x3c0 fs/ext4/inode.c:2768 do_writepages+0x359/0x870 mm/page-writeback.c:2612 filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:397 __filemap_fdatawrite_range mm/filemap.c:430 [inline] __filemap_fdatawrite mm/filemap.c:436 [inline] filemap_flush+0xdf/0x130 mm/filemap.c:463 ext4_release_file+0x81/0x300 fs/ext4/file.c:169 __fput+0x429/0x8a0 fs/file_table.c:422 task_work_run+0x24f/0x310 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe8a4c7dea9 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:00007fe8a5a100c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 RAX: 0000000000000004 RBX: 00007fe8a4dac050 RCX: 00007fe8a4c7dea9 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000006 RBP: 00007fe8a4cca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fe8a4dac050 R15: 00007ffe0c0c05e8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_do_writepages+0x3d38/0x3d40 fs/ext4/inode.c:2563 Code: 4e 8e 4c 89 f2 e8 c8 86 8a 02 e9 ab fb ff ff e8 3e 7f 40 ff 90 0f 0b e8 36 7f 40 ff 90 0f 0b e8 8e 6c 21 09 e8 29 7f 40 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90009ab7380 EFLAGS: 00010293 RAX: ffffffff82558147 RBX: 0000004000000000 RCX: ffff888027fd9e00 RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000 RBP: ffffc90009ab7790 R08: ffffffff82554923 R09: 1ffff1100d382b4a R10: dffffc0000000000 R11: ffffed100d382b4b R12: 0000000000000001 R13: 0000000000400040 R14: 0000006a10000000 R15: ffff888069c15cb0 FS: 00007fe8a5a106c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7f7e6ff000 CR3: 000000002e85c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400