[ 40.694701] audit: type=1800 audit(1577059488.084:30): pid=7659 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 45.090280] kauditd_printk_skb: 4 callbacks suppressed [ 45.090297] audit: type=1400 audit(1577059492.504:35): avc: denied { map } for pid=7834 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts. [ 539.493283] audit: type=1400 audit(1577059986.914:36): avc: denied { map } for pid=7846 comm="syz-executor918" path="/root/syz-executor918873059" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 539.536667] IPVS: ftp: loaded support on port[0] = 21 [ 539.565394] IPVS: ftp: loaded support on port[0] = 21 [ 539.569521] IPVS: ftp: loaded support on port[0] = 21 [ 539.578055] IPVS: ftp: loaded support on port[0] = 21 [ 539.588059] IPVS: ftp: loaded support on port[0] = 21 [ 539.609254] IPVS: ftp: loaded support on port[0] = 21 [ 539.615619] audit: type=1400 audit(1577059987.024:37): avc: denied { create } for pid=7853 comm="syz-executor918" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 539.645631] audit: type=1400 audit(1577059987.044:38): avc: denied { write } for pid=7853 comm="syz-executor918" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 539.670977] audit: type=1400 audit(1577059987.044:39): avc: denied { read } for pid=7853 comm="syz-executor918" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 executing program [ 539.710762] audit: type=1400 audit(1577059987.044:40): avc: denied { associate } for pid=7853 comm="syz-executor918" name="syz5" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 590.394439] WARNING: CPU: 0 PID: 9586 at fs/ext4/inode.c:3917 ext4_set_page_dirty+0x30b/0x430 [ 590.403335] Kernel panic - not syncing: panic_on_warn set ... [ 590.403335] [ 590.410748] CPU: 0 PID: 9586 Comm: kworker/0:1 Not tainted 4.19.91-syzkaller #0 [ 590.418212] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 590.427597] Workqueue: events xdp_umem_release_deferred [ 590.432969] Call Trace: [ 590.435579] dump_stack+0x197/0x210 [ 590.439223] panic+0x26a/0x50e [ 590.442519] ? __warn_printk+0xf3/0xf3 [ 590.446427] ? ext4_set_page_dirty+0x30b/0x430 [ 590.451021] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 590.456567] ? __warn.cold+0x5/0x53 [ 590.460200] ? __warn+0xe8/0x1d0 [ 590.463586] ? ext4_set_page_dirty+0x30b/0x430 [ 590.468179] __warn.cold+0x20/0x53 [ 590.471741] ? ext4_set_page_dirty+0x30b/0x430 [ 590.476338] report_bug+0x263/0x2b0 [ 590.480001] do_error_trap+0x204/0x360 [ 590.483930] ? math_error+0x340/0x340 [ 590.487753] ? firmware_map_remove+0x1a7/0x1a7 [ 590.492356] ? error_entry+0x7c/0xe0 [ 590.496095] ? trace_hardirqs_off_caller+0x65/0x220 [ 590.501139] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 590.506007] do_invalid_op+0x1b/0x20 [ 590.509733] invalid_op+0x14/0x20 [ 590.513207] RIP: 0010:ext4_set_page_dirty+0x30b/0x430 [ 590.518408] Code: ff e8 d9 a0 80 ff 49 8d 5f ff e9 e5 fd ff ff e8 cb a0 80 ff 48 c7 c6 20 67 ba 87 4c 89 e7 e8 1c 5c a9 ff 0f 0b e8 b5 a0 80 ff <0f> 0b e9 56 ff ff ff e8 a9 a0 80 ff 4c 89 ea 48 b8 00 00 00 00 00 [ 590.537327] RSP: 0018:ffff88809372fb78 EFLAGS: 00010293 [ 590.542707] RAX: ffff88809f0465c0 RBX: 0000000000000000 RCX: ffffffff81eaa2e0 [ 590.550005] RDX: 0000000000000000 RSI: ffffffff81eaa38b RDI: 0000000000000001 [ 590.557288] RBP: ffff88809372fba0 R08: ffff88809f0465c0 R09: ffff88809f046e88 [ 590.564575] R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0002183e80 [ 590.571858] R13: ffffea0002183e88 R14: 0000000000000000 R15: ffffea00023eb6c8 [ 590.579162] ? ext4_set_page_dirty+0x260/0x430 [ 590.583807] ? ext4_set_page_dirty+0x30b/0x430 [ 590.588410] ? ext4_set_page_dirty+0x30b/0x430 [ 590.593011] ? ext4_readpages+0x120/0x120 [ 590.597193] set_page_dirty+0x2e7/0x820 [ 590.601196] set_page_dirty_lock+0x88/0xc0 [ 590.605452] xdp_umem_unpin_pages.isra.0+0x105/0x3a0 [ 590.610580] xdp_umem_release_deferred+0x2aa/0x430 [ 590.615536] ? xdp_umem_unaccount_pages.isra.0+0xd0/0xd0 [ 590.621005] ? __lock_is_held+0xb6/0x140 [ 590.625099] process_one_work+0x989/0x1750 [ 590.629469] ? pwq_dec_nr_in_flight+0x320/0x320 [ 590.634159] ? lock_acquire+0x16f/0x3f0 [ 590.638155] ? kasan_check_write+0x14/0x20 [ 590.642404] ? do_raw_spin_lock+0xc8/0x240 [ 590.646658] worker_thread+0x98/0xe40 [ 590.650474] ? trace_hardirqs_on+0x67/0x220 [ 590.654831] kthread+0x354/0x420 [ 590.658216] ? process_one_work+0x1750/0x1750 [ 590.662750] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 590.668305] ret_from_fork+0x24/0x30 [ 590.673738] Kernel Offset: disabled [ 590.677422] Rebooting in 86400 seconds..