Warning: Permanently added '10.128.0.219' (ECDSA) to the list of known hosts. [ 38.749817] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 38.875326] audit: type=1400 audit(1574581420.170:36): avc: denied { map } for pid=6973 comm="syz-executor037" path="/root/syz-executor037081695" dev="sda1" ino=16483 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 [ 40.560186] kasan: CONFIG_KASAN_INLINE enabled [ 40.565089] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.572455] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.578670] Modules linked in: [ 40.581856] CPU: 1 PID: 7020 Comm: syz-executor037 Not tainted 4.14.155-syzkaller #0 [ 40.589798] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.599409] task: ffff88809c7ae0c0 task.stack: ffff888078968000 [ 40.605579] RIP: 0010:skb_unlink+0xc4/0x160 [ 40.609879] RSP: 0018:ffff88807896f9b0 EFLAGS: 00010002 [ 40.615224] RAX: dffffc0000000000 RBX: ffff888091054a00 RCX: 00000000f13abcde [ 40.622500] RDX: 0000000000000001 RSI: 0000000000000282 RDI: 0000000000000008 [ 40.629749] RBP: ffff88807896f9d8 R08: 0000000000006a3c R09: ffffffff88cb97a0 [ 40.637012] R10: ffff88809c7ae968 R11: ffff88809c7ae0c0 R12: ffff888091054b40 [ 40.644287] R13: 0000000000000000 R14: ffff8880a4f6b4a0 R15: ffff88807896fa58 [ 40.651553] FS: 00007f9a3bbed700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 40.659760] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.665623] CR2: 00000000209ff000 CR3: 000000009f97a000 CR4: 00000000001406e0 [ 40.672886] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.680229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.687497] Call Trace: [ 40.690071] kcm_recvmsg+0x3a2/0x480 [ 40.693790] ? free_mux+0x20/0x20 [ 40.697218] ? free_mux+0x20/0x20 [ 40.700649] sock_recvmsg_nosec+0x89/0xb0 [ 40.704772] ? __sock_tx_timestamp+0x90/0x90 [ 40.709154] ___sys_recvmsg+0x21f/0x4d0 [ 40.713145] ? ___sys_sendmsg+0x840/0x840 [ 40.717416] ? __fget+0x210/0x370 [ 40.720851] ? save_trace+0x290/0x290 [ 40.724627] ? __might_fault+0x110/0x1d0 [ 40.728664] ? find_held_lock+0x35/0x130 [ 40.732746] ? __might_fault+0x110/0x1d0 [ 40.736797] __sys_recvmmsg+0x226/0x6b0 [ 40.740748] ? SyS_recvmsg+0x50/0x50 [ 40.744442] ? errseq_sample+0x4d/0x60 [ 40.748318] ? get_unused_fd_flags+0xd0/0xd0 [ 40.752717] ? sock_alloc_file+0x1c0/0x2f0 [ 40.756928] ? sock_poll+0x220/0x220 [ 40.761426] ? SyS_futex+0x215/0x302 [ 40.765113] ? SyS_futex+0x222/0x302 [ 40.768802] SyS_recvmmsg+0x125/0x140 [ 40.772611] ? __sys_recvmmsg+0x6b0/0x6b0 [ 40.776913] ? do_syscall_64+0x53/0x640 [ 40.780873] ? __sys_recvmmsg+0x6b0/0x6b0 [ 40.785008] do_syscall_64+0x1e8/0x640 [ 40.788884] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.793707] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.798882] RIP: 0033:0x446ba9 [ 40.802060] RSP: 002b:00007f9a3bbecd98 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 40.809743] RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 0000000000446ba9 [ 40.816998] RDX: 0400000000000310 RSI: 0000000020003540 RDI: 0000000000000005 [ 40.824372] RBP: 00000000006dbc40 R08: 0000000000000000 R09: 0000000000000000 [ 40.831738] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc4c [ 40.839004] R13: 00000000002b0095 R14: 0000a50000000000 R15: 0000000300000018 [ 40.846265] Code: 00 00 00 49 8d 7d 08 4c 8b 63 08 48 b8 00 00 00 00 00 fc ff df 48 c7 43 08 00 00 00 00 48 89 fa 48 c7 03 00 00 00 00 48 c1 ea 03 <80> 3c 02 00 75 58 4c 89 e2 4d 89 65 08 48 b8 00 00 00 00 00 fc [ 40.865361] RIP: skb_unlink+0xc4/0x160 RSP: ffff88807896f9b0 [ 40.871160] ---[ end trace e99ec447687e2d78 ]--- [ 40.875891] Kernel panic - not syncing: Fatal exception [ 40.882912] Kernel Offset: disabled [ 40.886544] Rebooting in 86400 seconds..