[....] Starting enhanced syslogd: rsyslogd[ 14.745513] audit: type=1400 audit(1521286650.257:5): avc: denied { syslog } for pid=3983 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: [ 19.091069] audit: type=1400 audit(1521286654.602:6): avc: denied { map } for pid=4124 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 '10.128.0.60' (ECDSA) to the list of known hosts. [ 25.440572] audit: type=1400 audit(1521286660.952:7): avc: denied { map } for pid=4138 comm="syzkaller816369" path="/root/syzkaller816369067" 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 [ 25.456965] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program [ 25.495216] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program [ 25.533585] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program [ 25.572428] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program [ 25.616561] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 25.689998] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program [ 25.733401] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program [ 25.788547] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.062415] kasan: CONFIG_KASAN_INLINE enabled [ 31.067221] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.074652] general protection fault: 0000 [#1] SMP KASAN [ 31.080174] Dumping ftrace buffer: [ 31.083699] (ftrace buffer empty) [ 31.087396] Modules linked in: [ 31.090570] CPU: 1 PID: 9972 Comm: syzkaller816369 Not tainted 4.16.0-rc5+ #357 [ 31.097989] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.107328] RIP: 0010:rdma_resolve_addr+0x13c/0x26c0 [ 31.112400] RSP: 0018:ffff8801b4237680 EFLAGS: 00010207 [ 31.117732] RAX: 0000000000000042 RBX: ffff8801b4237a44 RCX: 0000000000000000 [ 31.124974] RDX: 0000000000000000 RSI: ffff8801b4237a44 RDI: 0000000000000214 [ 31.132212] RBP: ffff8801b42379e0 R08: 0000000000000000 R09: 0000000000000000 [ 31.139458] R10: ffff8801b42379f8 R11: 0000000000000000 R12: dffffc0000000000 [ 31.146699] R13: 00000000000000a0 R14: ffff8801b4237a28 R15: 0000000000000000 [ 31.153945] FS: 00007ff9ef3f9700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 executing program [ 31.162148] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.168000] CR2: 00000000006db0a0 CR3: 00000001c5638006 CR4: 00000000001606e0 [ 31.175248] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.182492] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.189744] Call Trace: [ 31.192311] ? find_held_lock+0x35/0x1d0 [ 31.196349] ? rdma_bind_addr+0x1b50/0x1b50 [ 31.200644] ? lock_downgrade+0x980/0x980 [ 31.204776] ? __radix_tree_lookup+0x435/0x5e0 executing program executing program executing program executing program executing program executing program executing program executing program [ 31.209357] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 31.214191] ? wait_for_completion+0x770/0x770 [ 31.218766] ? lock_release+0xa40/0xa40 [ 31.222731] ? check_same_owner+0x320/0x320 [ 31.227040] ? find_held_lock+0x35/0x1d0 [ 31.231106] ucma_resolve_ip+0x142/0x1f0 [ 31.235157] ? ucma_resolve_ip+0x142/0x1f0 [ 31.239399] ? ucma_resolve_addr+0x330/0x330 [ 31.243806] ? kasan_check_write+0x14/0x20 [ 31.248029] ucma_write+0x2d6/0x3d0 [ 31.251641] ? ucma_resolve_addr+0x330/0x330 [ 31.256038] ? ucma_resolve_route+0x1a0/0x1a0 [ 31.260527] ? ucma_resolve_route+0x1a0/0x1a0 [ 31.265008] __vfs_write+0xef/0x970 [ 31.268624] ? rcu_note_context_switch+0x710/0x710 [ 31.273547] ? kernel_read+0x120/0x120 [ 31.277434] ? __might_sleep+0x95/0x190 [ 31.281398] ? _cond_resched+0x14/0x30 [ 31.285278] ? __inode_security_revalidate+0xd9/0x130 [ 31.290454] ? avc_policy_seqno+0x9/0x20 [ 31.294511] ? selinux_file_permission+0x82/0x460 [ 31.299353] ? security_file_permission+0x89/0x1e0 [ 31.304274] ? rw_verify_area+0xe5/0x2b0 [ 31.308324] ? __fdget_raw+0x20/0x20 [ 31.312029] vfs_write+0x189/0x510 [ 31.315560] SyS_write+0xef/0x220 [ 31.319004] ? SyS_read+0x220/0x220 [ 31.322623] ? do_syscall_64+0xb7/0x940 [ 31.326584] ? SyS_read+0x220/0x220 [ 31.330204] do_syscall_64+0x281/0x940 [ 31.334082] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.338569] ? finish_task_switch+0x1c1/0x7e0 [ 31.343053] ? syscall_return_slowpath+0x550/0x550 [ 31.347974] ? syscall_return_slowpath+0x2ac/0x550 [ 31.352895] ? prepare_exit_to_usermode+0x350/0x350 [ 31.357904] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 31.363260] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.368097] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 31.373270] RIP: 0033:0x446b89 [ 31.376442] RSP: 002b:00007ff9ef3f8da8 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 31.384134] RAX: ffffffffffffffda RBX: 00000000006e29fc RCX: 0000000000446b89 [ 31.391392] RDX: 0000000000000021 RSI: 0000000020000180 RDI: 0000000000000005 [ 31.398650] RBP: 00000000006e29f8 R08: 00007ff9ef3f9700 R09: 0000000000000000 [ 31.405909] R10: 00007ff9ef3f9700 R11: 0000000000000293 R12: 2f646e6162696e69 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.413163] R13: 666e692f7665642f R14: 7070702f7665642f R15: 0000000000000006 [ 31.420439] Code: 31 c0 e8 c8 98 53 fd 48 89 df e8 d0 f5 f5 ff 4c 89 ef 48 63 d0 48 89 de e8 c2 c8 8b fd 49 8d bf 14 02 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 14 20 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f [ 31.439612] RIP: rdma_resolve_addr+0x13c/0x26c0 RSP: ffff8801b4237680 [ 31.446262] ---[ end trace 67cff818e5761ec4 ]--- [ 31.451026] Kernel panic - not syncing: Fatal exception [ 31.456809] Dumping ftrace buffer: [ 31.460321] (ftrace buffer empty) [ 31.464001] Kernel Offset: disabled [ 31.467597] Rebooting in 86400 seconds..