[ 44.703687] audit: type=1800 audit(1577162451.766:29): pid=7668 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2447 res=0 [ 44.745270] audit: type=1800 audit(1577162451.766:30): pid=7668 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 Warning: Permanently added '10.128.10.48' (ECDSA) to the list of known hosts. syzkaller login: [ 52.921686] kauditd_printk_skb: 5 callbacks suppressed [ 52.921703] audit: type=1400 audit(1577162459.986:36): avc: denied { map } for pid=7854 comm="syz-executor871" path="/root/syz-executor871503221" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 52.937473] IPVS: ftp: loaded support on port[0] = 21 executing program [ 52.980583] audit: type=1400 audit(1577162460.046:37): avc: denied { create } for pid=7855 comm="syz-executor871" 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 [ 52.987289] rxrpc: Assertion failed [ 53.009346] ------------[ cut here ]------------ [ 53.010212] audit: type=1400 audit(1577162460.046:38): avc: denied { write } for pid=7855 comm="syz-executor871" 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 [ 53.014127] kernel BUG at net/rxrpc/local_object.c:437! [ 53.039475] audit: type=1400 audit(1577162460.046:39): avc: denied { read } for pid=7855 comm="syz-executor871" 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 [ 53.043829] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 53.072465] CPU: 1 PID: 2794 Comm: kworker/1:2 Not tainted 4.19.91-syzkaller #0 [ 53.079892] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.089237] Workqueue: krxrpcd rxrpc_local_processor [ 53.094342] RIP: 0010:rxrpc_local_processor.cold+0x24/0x29 [ 53.099959] Code: ff 5b a7 fa 0f 0b e8 94 f7 bc fa 48 c7 c7 c0 45 5c 88 e8 ec 5b a7 fa 0f 0b e8 81 f7 bc fa 48 c7 c7 c0 45 5c 88 e8 d9 5b a7 fa <0f> 0b 90 90 90 55 48 89 e5 41 57 49 89 ff 41 56 41 55 41 54 53 48 [ 53.118854] RSP: 0018:ffff88809e9a7ce8 EFLAGS: 00010282 [ 53.124205] RAX: 0000000000000017 RBX: ffff88808ba5e038 RCX: 0000000000000000 [ 53.131457] RDX: 0000000000000000 RSI: ffffffff8155bb16 RDI: ffffed1013d34f8f [ 53.139057] RBP: ffff88809e9a7d30 R08: 0000000000000017 R09: ffffed1015d25079 [ 53.146308] R10: ffffed1015d25078 R11: ffff8880ae9283c7 R12: ffff88808dbeb888 [ 53.153560] R13: ffff8880a08d0748 R14: ffff88808ba5e000 R15: ffff888094aae500 [ 53.160813] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 53.169022] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.174942] CR2: 0000000020000140 CR3: 0000000008e6d000 CR4: 00000000001406e0 [ 53.182214] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.189479] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.196740] Call Trace: [ 53.199320] process_one_work+0x989/0x1750 [ 53.203558] ? pwq_dec_nr_in_flight+0x320/0x320 [ 53.208210] ? lock_acquire+0x16f/0x3f0 [ 53.212172] ? kasan_check_write+0x14/0x20 [ 53.216390] ? do_raw_spin_lock+0xc8/0x240 [ 53.220623] worker_thread+0x98/0xe40 [ 53.224417] ? trace_hardirqs_on+0x67/0x220 [ 53.228726] kthread+0x354/0x420 [ 53.232084] ? process_one_work+0x1750/0x1750 [ 53.236571] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 53.242112] ret_from_fork+0x24/0x30 [ 53.245807] Modules linked in: [ 53.249064] ---[ end trace dfe21a2ee3239174 ]--- [ 53.253866] RIP: 0010:rxrpc_local_processor.cold+0x24/0x29 [ 53.259570] Code: ff 5b a7 fa 0f 0b e8 94 f7 bc fa 48 c7 c7 c0 45 5c 88 e8 ec 5b a7 fa 0f 0b e8 81 f7 bc fa 48 c7 c7 c0 45 5c 88 e8 d9 5b a7 fa <0f> 0b 90 90 90 55 48 89 e5 41 57 49 89 ff 41 56 41 55 41 54 53 48 [ 53.278671] RSP: 0018:ffff88809e9a7c