EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: none. ------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2704! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 10284 Comm: syz-executor.4 Not tainted 5.14.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ext4_writepages+0x1a87/0x2d10 fs/ext4/inode.c:2704 Code: 0f 87 69 b1 31 06 be 00 10 00 00 ba 01 00 00 00 4c 89 e7 48 d3 ee e8 48 66 fe ff 83 c0 01 89 84 24 c8 00 00 00 e9 4b eb ff ff <0f> 0b 89 44 24 08 e9 97 ef ff ff 48 8b 7c 24 28 e8 e4 fd b5 ff e9 RSP: 0018:ffffc9000b2175c8 EFLAGS: 00010247 RAX: 000000c410000000 RBX: ffff88802c372000 RCX: ffffffff81f01a84 RDX: 1ffff11008501c80 RSI: 0000000000000008 RDI: ffff88804280e400 RBP: ffff88804280e400 R08: 0000000000000000 R09: ffff88804280e407 R10: ffffed1008501c80 R11: ffff88804280eb28 R12: ffff88804280e6e8 R13: ffffc9000b217a50 R14: 0000000000000001 R15: ffff88802c372000 FS: 00007f5a17a15700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000005230f0 CR3: 0000000033947000 CR4: 0000000000350ee0 Call Trace: do_writepages+0xca/0x240 mm/page-writeback.c:2355 __filemap_fdatawrite_range+0x243/0x320 mm/filemap.c:413 file_write_and_wait_range+0x8d/0xf0 mm/filemap.c:792 ext4_sync_file+0x1c8/0xc90 fs/ext4/fsync.c:151 generic_write_sync include/linux/fs.h:2987 [inline] ext4_buffered_write_iter+0x2d3/0x440 fs/ext4/file.c:277 ext4_file_write_iter+0x383/0x1160 fs/ext4/file.c:680 call_write_iter include/linux/fs.h:2114 [inline] new_sync_write+0x35d/0x5f0 fs/read_write.c:518 vfs_write+0x5b1/0x880 fs/read_write.c:605 ksys_write+0xf4/0x1d0 fs/read_write.c:658 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5a17a15188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000082 RSI: 0000000020000180 RDI: 0000000000000004 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffea6b70e5f R14: 00007f5a17a15300 R15: 0000000000022000 Modules linked in: ---[ end trace 0d2b008034dcb632 ]--- RIP: 0010:ext4_writepages+0x1a87/0x2d10 fs/ext4/inode.c:2704 Code: 0f 87 69 b1 31 06 be 00 10 00 00 ba 01 00 00 00 4c 89 e7 48 d3 ee e8 48 66 fe ff 83 c0 01 89 84 24 c8 00 00 00 e9 4b eb ff ff <0f> 0b 89 44 24 08 e9 97 ef ff ff 48 8b 7c 24 28 e8 e4 fd b5 ff e9 RSP: 0018:ffffc9000b2175c8 EFLAGS: 00010247 RAX: 000000c410000000 RBX: ffff88802c372000 RCX: ffffffff81f01a84 RDX: 1ffff11008501c80 RSI: 0000000000000008 RDI: ffff88804280e400 RBP: ffff88804280e400 R08: 0000000000000000 R09: ffff88804280e407 R10: ffffed1008501c80 R11: ffff88804280eb28 R12: ffff88804280e6e8 R13: ffffc9000b217a50 R14: 0000000000000001 R15: ffff88802c372000 FS: 00007f5a17a15700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000005230f0 CR3: 0000000033947000 CR4: 0000000000350ee0