Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.10' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.382698] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 32.399352] audit: type=1800 audit(1660738853.179:2): pid=8082 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor443" name="file0" dev="loop0" ino=17 res=0 [ 32.431268] ------------[ cut here ]------------ [ 32.436126] kernel BUG at fs/ext4/inode.c:2794! [ 32.441229] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 32.446594] CPU: 1 PID: 8082 Comm: syz-executor443 Not tainted 4.19.211-syzkaller #0 [ 32.454463] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 32.463916] RIP: 0010:ext4_writepages+0x2d31/0x37f0 [ 32.468911] Code: 00 fc ff df 44 89 64 24 18 48 c1 ea 03 80 3c 02 00 0f 84 25 da ff ff 48 8b 3c 24 e8 89 2d b8 ff e9 17 da ff ff e8 8f 50 82 ff <0f> 0b 4c 8b b4 24 20 01 00 00 e8 80 50 82 ff 0f b6 ac 24 50 02 00 [ 32.487796] RSP: 0018:ffff888095027588 EFLAGS: 00010293 [ 32.493317] RAX: ffff888096032440 RBX: 0000000000000001 RCX: ffffffff81e03070 [ 32.500918] RDX: 0000000000000000 RSI: ffffffff81e034e1 RDI: 0000000000000007 [ 32.508175] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 32.515428] R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000001 [ 32.522708] R13: dffffc0000000000 R14: ffff88808d3e0830 R15: 0000000000000000 [ 32.529971] FS: 0000555555af1300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 32.538194] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.544069] CR2: 0000555ec0e470f0 CR3: 0000000096c09000 CR4: 00000000003406e0 [ 32.551345] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.558596] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.565843] Call Trace: [ 32.568436] ? ext4_mark_iloc_dirty+0x1b0d/0x2b30 [ 32.573286] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 32.578284] ? ext4_mark_inode_dirty+0x870/0x870 [ 32.583032] ? __ext4_handle_dirty_metadata+0x1e0/0x590 [ 32.588374] ? __brelse+0x84/0xa0 [ 32.591813] ? __lock_acquire+0x6de/0x3ff0 [ 32.596026] ? ext4_chunk_trans_blocks+0x30/0x30 [ 32.600778] ? __ext4_journal_get_write_access+0x6c/0xa0 [ 32.606208] ? mark_held_locks+0xf0/0xf0 [ 32.610264] ? ext4_mark_inode_dirty+0x222/0x870 [ 32.614997] ? ext4_expand_extra_isize+0x500/0x500 [ 32.619907] ? ext4_mark_inode_dirty+0x870/0x870 [ 32.624640] do_writepages+0xe5/0x290 [ 32.628422] ? page_writeback_cpu_online+0x10/0x10 [ 32.633342] ? do_raw_spin_unlock+0x171/0x230 [ 32.637815] ? _raw_spin_unlock+0x29/0x40 [ 32.641946] ? wbc_attach_and_unlock_inode+0x11d/0x9e0 [ 32.647202] __filemap_fdatawrite_range+0x27d/0x350 [ 32.652195] ? delete_from_page_cache_batch+0xcc0/0xcc0 [ 32.657539] ? generic_perform_write+0x36c/0x4d0 [ 32.662290] file_write_and_wait_range+0x93/0x100 [ 32.667110] __generic_file_fsync+0x74/0x1f0 [ 32.671497] ext4_sync_file+0xa35/0x1420 [ 32.675533] ? ext4_getfsmap+0x980/0x980 [ 32.679575] vfs_fsync_range+0x13a/0x220 [ 32.683616] ext4_file_write_iter+0x726/0xf20 [ 32.688093] ? ext4_file_open+0x600/0x600 [ 32.692241] ? mark_held_locks+0xf0/0xf0 [ 32.696294] ? mark_held_locks+0xf0/0xf0 [ 32.700335] ? mark_held_locks+0xf0/0xf0 [ 32.704402] ? debug_check_no_obj_freed+0x201/0x490 [ 32.709408] __vfs_write+0x51b/0x770 [ 32.713126] ? common_file_perm+0x4e5/0x850 [ 32.717437] ? kernel_read+0x110/0x110 [ 32.721307] ? check_preemption_disabled+0x41/0x280 [ 32.726315] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 32.731315] vfs_write+0x1f3/0x540 [ 32.734853] ksys_write+0x12b/0x2a0 [ 32.738473] ? __ia32_sys_read+0xb0/0xb0 [ 32.742515] ? trace_hardirqs_off_caller+0x6e/0x210 [ 32.747527] ? do_syscall_64+0x21/0x620 [ 32.751483] do_syscall_64+0xf9/0x620 [ 32.755308] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.760479] RIP: 0033:0x7fd1472e8049 [ 32.764191] 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 c0 ff ff ff f7 d8 64 89 01 48 [ 32.783104] RSP: 002b:00007ffed9d83cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 32.790792] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007fd1472e8049 [ 32.798050] RDX: 0000000000000016 RSI: 0000000020000380 RDI: 0000000000000004 [ 32.805314] RBP: 00007fd1472a78e0 R08: 0000000000000000 R09: 0000000000000000 [ 32.812561] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd1472a7970 [ 32.819812] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 32.827064] Modules linked in: [ 32.832556] ---[ end trace be8d0deed3953d74 ]--- [ 32.837451] RIP: 0010:ext4_writepages+0x2d31/0x37f0 [ 32.842725] Code: 00 fc ff df 44 89 64 24 18 48 c1 ea 03 80 3c 02 00 0f 84 25 da ff ff 48 8b 3c 24 e8 89 2d b8 ff e9 17 da ff ff e8 8f 50 82 ff <0f> 0b 4c 8b b4 24 20 01 00 00 e8 80 50 82 ff 0f b6 ac 24 50 02 00 [ 32.861697] RSP: 0018:ffff888095027588 EFLAGS: 00010293 [ 32.867058] RAX: ffff888096032440 RBX: 0000000000000001 RCX: ffffffff81e03070 [ 32.874348] RDX: 0000000000000000 RSI: ffffffff81e034e1 RDI: 0000000000000007 [ 32.881650] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 32.888944] R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000001 [ 32.896207] R13: dffffc0000000000 R14: ffff88808d3e0830 R15: 0000000000000000 [ 32.903498] FS: 0000555555af1300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 32.911765] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.917634] CR2: 00007f57dc03b008 CR3: 0000000096c09000 CR4: 00000000003406e0 [ 32.924925] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.932230] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.939531] Kernel panic - not syncing: Fatal exception [ 32.945074] Kernel Offset: disabled [ 32.948696] Rebooting in 86400 seconds..