[....] Starting enhanced syslogd: rsyslogd[ 11.348957] audit: type=1400 audit(1513735419.949:5): avc: denied { syslog } for pid=2999 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 15.874235] audit: type=1400 audit(1513735424.474:6): avc: denied { map } for pid=3137 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 'ci-upstream-net-kasan-gce-9,10.128.15.198' (ECDSA) to the list of known hosts. executing program executing program [ 22.039913] audit: type=1400 audit(1513735430.640:7): avc: denied { map } for pid=3151 comm="syzkaller641496" path="/root/syzkaller641496637" 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 [ 22.066878] kasan: CONFIG_KASAN_INLINE enabled [ 22.071761] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 22.079142] general protection fault: 0000 [#1] SMP KASAN [ 22.084664] Dumping ftrace buffer: [ 22.088183] (ftrace buffer empty) [ 22.091860] Modules linked in: [ 22.095024] CPU: 1 PID: 3151 Comm: syzkaller641496 Not tainted 4.15.0-rc3+ #159 [ 22.102561] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.111891] RIP: 0010:scatterwalk_copychunks+0x337/0x480 [ 22.117304] RSP: 0018:ffff8801d4f57260 EFLAGS: 00010202 [ 22.122635] RAX: 0000000000000000 RBX: 0000000000000fa6 RCX: ffffffff82505a59 [ 22.129879] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000008 [ 22.137117] RBP: ffff8801d4f572c0 R08: ffffed003b2b1952 R09: ffffed003b2b1952 [ 22.144353] R10: 0000000000000002 R11: ffffed003b2b1951 R12: 0000000000000fa6 [ 22.151591] R13: ffff8801d4f57630 R14: dffffc0000000000 R15: 0000000000000000 [ 22.158841] FS: 0000000001b98880(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 22.167034] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.172883] CR2: 0000000020b10000 CR3: 00000001ca7a5001 CR4: 00000000001606e0 [ 22.180123] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.187367] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.194605] Call Trace: [ 22.197173] skcipher_walk_next+0x8db/0x1bd0 [ 22.201553] ? skcipher_walk_done+0xcb0/0xcb0 [ 22.206029] ? check_noncircular+0x20/0x20 [ 22.210245] skcipher_walk_first+0x138/0x400 [ 22.214636] skcipher_walk_skcipher+0x519/0x6e0 [ 22.219284] skcipher_walk_virt+0x58/0xd0 [ 22.223404] crypto_chacha20_crypt+0xc9/0xbd0 [ 22.227870] ? crypto_chacha20_setkey+0xc0/0xc0 [ 22.232507] ? crypto_sm3_finup+0x8d/0x150 [ 22.236710] ? crypto_hash_walk_done+0x124/0x410 [ 22.241434] ? shash_ahash_finup+0x1d9/0x270 [ 22.245822] poly_tail_continue+0x42a/0x6b0 [ 22.250110] ? poly_tail_continue+0x42a/0x6b0 [ 22.254571] ? crypto_ahash_op+0xc4/0x140 [ 22.258685] poly_tail+0x40f/0x520 [ 22.262194] poly_cipherpad+0x33e/0x470 [ 22.266136] poly_cipher+0x303/0x440 [ 22.269818] poly_adpad+0x347/0x480 [ 22.273414] poly_ad+0x25c/0x300 [ 22.276749] poly_setkey+0x2fc/0x3e0 [ 22.280431] poly_init+0x16c/0x1d0 [ 22.283937] poly_genkey+0x422/0x590 [ 22.287620] chachapoly_encrypt+0x418/0x620 [ 22.291914] aead_recvmsg+0x1289/0x1bb0 [ 22.295865] ? aead_release+0x50/0x50 [ 22.299633] ? selinux_socket_recvmsg+0x36/0x40 [ 22.304269] ? security_socket_recvmsg+0x91/0xc0 [ 22.308990] ? aead_release+0x50/0x50 [ 22.312761] sock_recvmsg+0xc9/0x110 [ 22.316441] ? __sock_recv_wifi_status+0x210/0x210 [ 22.321338] ___sys_recvmsg+0x295/0x620 [ 22.325284] ? ___sys_sendmsg+0x890/0x890 [ 22.329403] ? __do_page_fault+0x5f7/0xc90 [ 22.333613] ? lock_downgrade+0x980/0x980 [ 22.337749] ? fget_raw+0x20/0x20 [ 22.341172] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 22.345719] ? vmacache_find+0x5f/0x280 [ 22.349664] ? up_read+0x1a/0x40 [ 22.353002] ? __do_page_fault+0x3d6/0xc90 [ 22.357211] ? fd_install+0x4d/0x60 [ 22.360808] ? __fdget+0x18/0x20 [ 22.364146] __sys_recvmsg+0xe2/0x210 [ 22.367914] ? __sys_recvmsg+0xe2/0x210 [ 22.371854] ? SyS_sendmmsg+0x60/0x60 [ 22.375623] ? __do_page_fault+0xc90/0xc90 [ 22.379827] ? SyS_setsockopt+0x215/0x360 [ 22.383948] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 22.388934] SyS_recvmsg+0x2d/0x50 [ 22.392444] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 22.397168] RIP: 0033:0x43fef9 [ 22.400324] RSP: 002b:00007ffe23fd66c8 EFLAGS: 00000217 ORIG_RAX: 000000000000002f [ 22.407997] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fef9 [ 22.415239] RDX: 0000000000000000 RSI: 0000000020c0c000 RDI: 0000000000000005 [ 22.422478] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 22.429720] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401860 [ 22.436962] R13: 00000000004018f0 R14: 0000000000000000 R15: 0000000000000000 [ 22.444220] Code: 89 ff e8 4d 68 2a 00 4c 89 ea 49 89 c7 48 c1 ea 03 42 80 3c 32 00 0f 85 c9 00 00 00 49 8d 7f 08 4d 89 7d 00 48 89 fa 48 c1 ea 03 <42> 0f b6 14 32 84 d2 74 09 80 fa 03 0f 8e 9e 00 00 00 48 8b 45 [ 22.463309] RIP: scatterwalk_copychunks+0x337/0x480 RSP: ffff8801d4f57260 [ 22.470279] ---[ end trace 82cbf479b0c9dc2a ]--- [ 22.475046] Kernel panic - not syncing: Fatal exception [ 22.480828] Dumping ftrace buffer: [ 22.484349] (ftrace buffer empty) [ 22.488025] Kernel Offset: disabled [ 22.491622] Rebooting in 86400 seconds..