[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 12.432843] audit: type=1400 audit(1514095882.510:6): avc: denied { map } for pid=3131 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-mmots-kasan-gce-7,10.128.15.210' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 45.613028] audit: type=1400 audit(1514095915.690:7): avc: denied { map } for pid=3150 comm="syzkaller192168" path="/root/syzkaller192168730" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file 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 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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.923764] ================================================================== [ 56.931173] BUG: KASAN: use-after-free in crypto_aead_free_instance+0xc0/0xd0 [ 56.938434] Read of size 8 at addr ffff8801c463ed80 by task cryptomgr_test/16496 [ 56.945950] [ 56.947568] CPU: 1 PID: 16496 Comm: cryptomgr_test Not tainted 4.15.0-rc4-mm1+ #49 [ 56.955257] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.964593] Call Trace: [ 56.967165] dump_stack+0x194/0x257 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.970780] ? arch_local_irq_restore+0x53/0x53 [ 56.975438] ? show_regs_print_info+0x18/0x18 [ 56.979929] ? crypto_aead_free_instance+0xc0/0xd0 [ 56.984849] print_address_description+0x73/0x250 [ 56.989684] ? crypto_aead_free_instance+0xc0/0xd0 [ 56.994599] kasan_report+0x23b/0x360 [ 56.998387] __asan_report_load8_noabort+0x14/0x20 [ 57.003303] crypto_aead_free_instance+0xc0/0xd0 [ 57.008044] ? aead_register_instance+0x1c0/0x1c0 [ 57.012869] crypto_free_instance+0x6d/0x100 [ 57.017261] crypto_destroy_instance+0x3c/0x80 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.021831] ? crypto_free_instance+0x100/0x100 [ 57.026483] crypto_remove_final+0x212/0x370 [ 57.030886] ? do_wait_intr_irq+0x3e0/0x3e0 [ 57.035200] ? crypto_attr_alg2+0x140/0x140 [ 57.039516] ? up_write+0x6b/0x120 [ 57.043041] ? up_read+0x40/0x40 [ 57.046395] ? trace_hardirqs_on+0xd/0x10 [ 57.050542] crypto_alg_tested+0x445/0x6f0 [ 57.054779] ? crypto_unregister_template+0x6e0/0x6e0 [ 57.059967] ? lockdep_init_map+0x9/0x10 [ 57.064016] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 57.069110] ? trace_hardirqs_on_caller+0x421/0x5c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.074115] ? trace_hardirqs_on+0xd/0x10 [ 57.078251] cryptomgr_test+0x17/0x30 [ 57.082033] kthread+0x33c/0x400 [ 57.085389] ? crypto_acomp_scomp_free_ctx+0x100/0x100 [ 57.090647] ? kthread_stop+0x7a0/0x7a0 [ 57.094611] ret_from_fork+0x24/0x30 [ 57.098330] [ 57.099934] Allocated by task 16492: [ 57.103631] save_stack+0x43/0xd0 [ 57.107071] kasan_kmalloc+0xad/0xe0 [ 57.110768] kmem_cache_alloc_trace+0x136/0x750 [ 57.115423] pcrypt_create+0x137/0x6c0 [ 57.119293] cryptomgr_probe+0x74/0x240 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.123252] kthread+0x33c/0x400 [ 57.126603] ret_from_fork+0x24/0x30 [ 57.130295] [ 57.131903] Freed by task 3148: [ 57.135167] save_stack+0x43/0xd0 [ 57.138604] kasan_slab_free+0x71/0xc0 [ 57.142474] kfree+0xd6/0x260 [ 57.145566] skb_free_head+0x74/0xb0 [ 57.149264] skb_release_data+0x58c/0x790 [ 57.153397] skb_release_all+0x4a/0x60 [ 57.157269] consume_skb+0x153/0x490 [ 57.160966] __dev_kfree_skb_any+0x85/0xa0 [ 57.165198] free_old_xmit_skbs.isra.27+0x15a/0x2c0 [ 57.170199] start_xmit+0x1b9/0x1650 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.173898] dev_hard_start_xmit+0x248/0xac0 [ 57.178293] sch_direct_xmit+0x2e0/0x920 [ 57.182339] __qdisc_run+0x571/0x1930 [ 57.186127] __dev_queue_xmit+0x89e/0x2200 [ 57.190352] dev_queue_xmit+0x17/0x20 [ 57.194141] ip_finish_output2+0xec8/0x1460 [ 57.198449] ip_finish_output+0x85e/0xd10 [ 57.202583] ip_output+0x1cc/0x860 [ 57.206109] ip_local_out+0x95/0x160 [ 57.209808] ip_queue_xmit+0x8c0/0x18e0 [ 57.213769] tcp_transmit_skb+0x1b12/0x38b0 [ 57.218077] tcp_write_xmit+0x680/0x5190 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.222125] __tcp_push_pending_frames+0xa0/0x250 [ 57.226951] tcp_push+0x538/0x770 [ 57.230390] tcp_sendmsg_locked+0x2663/0x3b30 [ 57.234875] tcp_sendmsg+0x2f/0x50 [ 57.238402] inet_sendmsg+0x11f/0x5e0 [ 57.242193] sock_sendmsg+0xca/0x110 [ 57.245892] sock_write_iter+0x31a/0x5d0 [ 57.249937] __vfs_write+0x684/0x970 [ 57.253640] vfs_write+0x189/0x510 [ 57.257167] SyS_write+0xef/0x220 [ 57.260609] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 57.265340] [ 57.266952] The buggy address belongs to the object at ffff8801c463ed80 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.266952] which belongs to the cache kmalloc-1024 of size 1024 [ 57.279770] The buggy address is located 0 bytes inside of [ 57.279770] 1024-byte region [ffff8801c463ed80, ffff8801c463f180) [ 57.291542] The buggy address belongs to the page: [ 57.296457] page:ffffea0007118f80 count:1 mapcount:0 mapping:ffff8801c463e000 index:0x0 compound_mapcount: 0 [ 57.306416] flags: 0x2fffc0000008100(slab|head) [ 57.311070] raw: 02fffc0000008100 ffff8801c463e000 0000000000000000 0000000100000007 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.318942] raw: ffffea0007122620 ffffea00071168a0 ffff8801dac00ac0 0000000000000000 [ 57.326807] page dumped because: kasan: bad access detected [ 57.332498] [ 57.334105] Memory state around the buggy address: [ 57.339017] ffff8801c463ec80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 57.346361] ffff8801c463ed00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 57.353708] >ffff8801c463ed80: fb fb fb fb 00 00 00 00 00 00 00 00 00 00 00 00 [ 57.361047] ^ [ 57.364396] ffff8801c463ee00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.371739] ffff8801c463ee80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 57.379077] ================================================================== [ 57.386414] Disabling lock debugging due to kernel taint [ 57.392008] Kernel panic - not syncing: panic_on_warn set ... [ 57.392008] [ 57.399360] CPU: 1 PID: 16496 Comm: cryptomgr_test Tainted: G B 4.15.0-rc4-mm1+ #49 [ 57.408349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.417687] Call Trace: [ 57.420255] dump_stack+0x194/0x257 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.423881] ? arch_local_irq_restore+0x53/0x53 [ 57.428534] ? kasan_end_report+0x32/0x50 [ 57.432660] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 57.437398] ? vsnprintf+0x1ed/0x1900 [ 57.441183] ? crypto_aead_free_instance+0x60/0xd0 [ 57.446091] panic+0x1e4/0x41c [ 57.449263] ? refcount_error_report+0x214/0x214 [ 57.454691] ? add_taint+0x1c/0x50 [ 57.458213] ? add_taint+0x1c/0x50 [ 57.461746] ? crypto_aead_free_instance+0xc0/0xd0 [ 57.466655] kasan_end_report+0x50/0x50 [ 57.470608] kasan_report+0x148/0x360 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.474398] __asan_report_load8_noabort+0x14/0x20 [ 57.479316] crypto_aead_free_instance+0xc0/0xd0 [ 57.484056] ? aead_register_instance+0x1c0/0x1c0 [ 57.488879] crypto_free_instance+0x6d/0x100 [ 57.493267] crypto_destroy_instance+0x3c/0x80 [ 57.497833] ? crypto_free_instance+0x100/0x100 [ 57.502504] crypto_remove_final+0x212/0x370 [ 57.506899] ? do_wait_intr_irq+0x3e0/0x3e0 [ 57.511211] ? crypto_attr_alg2+0x140/0x140 [ 57.515525] ? up_write+0x6b/0x120 [ 57.519054] ? up_read+0x40/0x40 [ 57.522408] ? trace_hardirqs_on+0xd/0x10 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.526551] crypto_alg_tested+0x445/0x6f0 [ 57.530780] ? crypto_unregister_template+0x6e0/0x6e0 [ 57.535956] ? lockdep_init_map+0x9/0x10 [ 57.540005] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 57.545093] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 57.550095] ? trace_hardirqs_on+0xd/0x10 [ 57.554231] cryptomgr_test+0x17/0x30 [ 57.558014] kthread+0x33c/0x400 [ 57.561368] ? crypto_acomp_scomp_free_ctx+0x100/0x100 [ 57.566633] ? kthread_stop+0x7a0/0x7a0 [ 57.570596] ret_from_fork+0x24/0x30 [ 57.574744] Dumping ftrace buffer: [ 57.578254] (ftrace buffer empty) [ 57.581930] Kernel Offset: disabled [ 57.585532] Rebooting in 86400 seconds..