[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.56' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.821019] audit: type=1800 audit(1656660450.966:2): pid=8097 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor361" name="bus" dev="sda1" ino=13861 res=0 [ 32.841451] audit: type=1800 audit(1656660450.966:3): pid=8097 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor361" name="bus" dev="sda1" ino=13861 res=0 [ 32.862283] audit: type=1800 audit(1656660450.966:4): pid=8097 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor361" name="bus" dev="sda1" ino=13861 res=0 [ 32.883106] audit: type=1800 audit(1656660450.966:5): pid=8097 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor361" name="bus" dev="sda1" ino=13861 res=0 [ 32.904272] audit: type=1800 audit(1656660450.966:6): pid=8097 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor361" name="bus" dev="sda1" ino=13861 res=0 [ 32.925535] audit: type=1800 audit(1656660450.966:7): pid=8097 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor361" name="bus" dev="sda1" ino=13861 res=0 [ 32.946170] audit: type=1800 audit(1656660450.966:8): pid=8097 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor361" name="bus" dev="sda1" ino=13861 res=0 [ 32.966184] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 32.968045] audit: type=1800 audit(1656660450.966:9): pid=8097 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor361" name="bus" dev="sda1" ino=13861 res=0 [ 32.984681] File: /root/bus PID: 8097 Comm: syz-executor361 [ 32.998197] audit: type=1800 audit(1656660450.966:10): pid=8097 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor361" name="bus" dev="sda1" ino=13861 res=0 executing program [ 33.023528] audit: type=1800 audit(1656660450.966:11): pid=8097 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor361" name="bus" dev="sda1" ino=13861 res=0 executing program executing program executing program [ 33.644506] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 33.655722] File: /root/bus PID: 8112 Comm: syz-executor361 [ 33.851311] WARNING: CPU: 1 PID: 8117 at fs/ext4/inode.c:3942 ext4_set_page_dirty+0x2a4/0x370 [ 33.859986] Kernel panic - not syncing: panic_on_warn set ... [ 33.859986] [ 33.867342] CPU: 1 PID: 8117 Comm: syz-executor361 Not tainted 4.19.211-syzkaller #0 [ 33.875208] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2022 [ 33.884542] Call Trace: [ 33.887127] dump_stack+0x1fc/0x2ef [ 33.890746] panic+0x26a/0x50e [ 33.893926] ? __warn_printk+0xf3/0xf3 [ 33.897805] ? ext4_set_page_dirty+0x2a4/0x370 [ 33.902391] ? __probe_kernel_read+0x130/0x1b0 [ 33.907137] ? __warn.cold+0x5/0x5a [ 33.910754] ? __warn+0xe4/0x200 [ 33.914106] ? ext4_set_page_dirty+0x2a4/0x370 [ 33.918673] __warn.cold+0x20/0x5a [ 33.922224] ? ext4_set_page_dirty+0x2a4/0x370 [ 33.926790] report_bug+0x262/0x2b0 [ 33.930415] do_error_trap+0x1d7/0x310 [ 33.934290] ? math_error+0x310/0x310 [ 33.938080] ? mark_held_locks+0xf0/0xf0 [ 33.942126] ? follow_page_mask+0xc3/0x1d00 [ 33.946461] ? error_entry+0x72/0xd0 [ 33.950170] ? trace_hardirqs_off_caller+0x6e/0x210 [ 33.955175] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.960005] invalid_op+0x14/0x20 [ 33.963444] RIP: 0010:ext4_set_page_dirty+0x2a4/0x370 [ 33.968630] Code: ff e8 40 0f 84 ff 49 8d 5d ff e9 27 fe ff ff e8 32 0f 84 ff 48 c7 c6 e0 54 7a 88 48 89 ef e8 e3 a0 ab ff 0f 0b e8 1c 0f 84 ff <0f> 0b e9 77 ff ff ff e8 10 0f 84 ff 4c 8b 65 08 31 ff 4c 89 e3 83 [ 33.987526] RSP: 0018:ffff888097617a28 EFLAGS: 00010293 [ 33.992874] RAX: ffff888094e6e3c0 RBX: 0000000000000000 RCX: ffffffff81de75ce [ 34.000128] RDX: 0000000000000000 RSI: ffffffff81de7654 RDI: 0000000000000001 [ 34.007384] RBP: ffffea00022f5d40 R08: 0000000000000001 R09: 0000000000000000 [ 34.014635] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 34.021889] R13: ffffea00022f5d88 R14: ffffea00022f5d88 R15: dffffc0000000000 [ 34.029162] ? ext4_set_page_dirty+0x21e/0x370 [ 34.033741] ? ext4_set_page_dirty+0x2a4/0x370 [ 34.038316] ? ext4_set_page_dirty+0x2a4/0x370 [ 34.042885] ? ext4_readpages+0x110/0x110 [ 34.047022] set_page_dirty+0x25f/0x640 [ 34.050990] set_page_dirty_lock+0x81/0xc0 [ 34.055216] process_vm_rw_core.constprop.0+0x4bb/0xb00 [ 34.060572] ? pcpu_free_vm_areas+0xc0/0xc0 [ 34.064883] ? __might_fault+0x192/0x1d0 [ 34.068930] ? _copy_from_user+0xd2/0x130 [ 34.073064] ? rw_copy_check_uvector+0x27c/0x340 [ 34.077811] process_vm_rw+0x21a/0x250 [ 34.081777] ? compat_process_vm_rw+0x250/0x250 [ 34.086443] ? vm_insert_page+0x9c0/0x9c0 [ 34.090587] ? __do_page_fault+0x6d1/0xd60 [ 34.094811] ? lock_downgrade+0x720/0x720 [ 34.098961] ? up_read+0x17/0x110 [ 34.102416] ? __do_page_fault+0x180/0xd60 [ 34.106644] __x64_sys_process_vm_writev+0xdf/0x1b0 [ 34.111648] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.116220] do_syscall_64+0xf9/0x620 [ 34.120013] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.125195] RIP: 0033:0x7f48c1df7b49 [ 34.128895] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 b8 ff ff ff f7 d8 64 89 01 48 [ 34.147778] RSP: 002b:00007f48c1d882e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000137 [ 34.155562] RAX: ffffffffffffffda RBX: 00007f48c1e80438 RCX: 00007f48c1df7b49 [ 34.162814] RDX: 0000000000000001 RSI: 0000000020c22000 RDI: 0000000000001fb5 [ 34.170076] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 34.177328] R10: 0000000020c22fa0 R11: 0000000000000246 R12: 00007f48c1e80430 [ 34.184582] R13: 00007f48c1e8043c R14: 00007f48c1e4e07c R15: 0000000000022000 [ 34.192146] Kernel Offset: disabled [ 34.195818] Rebooting in 86400 seconds..