Warning: Permanently added '10.128.0.177' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 149.572715][ T27] audit: type=1400 audit(1593846624.607:8): avc: denied { execmem } for pid=6828 comm="syz-executor427" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program executing program executing program executing program [ 150.440717][ T6847] ------------[ cut here ]------------ [ 150.446774][ T6847] kernel BUG at net/rxrpc/recvmsg.c:605! [ 150.453478][ T6847] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 150.459539][ T6847] CPU: 1 PID: 6847 Comm: syz-executor427 Not tainted 5.8.0-rc3-syzkaller #0 [ 150.468180][ T6847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 150.478220][ T6847] RIP: 0010:rxrpc_recvmsg+0x18ab/0x1a03 [ 150.483741][ T6847] Code: 89 e7 e8 28 f3 6e fa e9 eb fc ff ff e8 1e f3 6e fa e9 33 ef ff ff 48 8b 7c 24 10 e8 0f f3 6e fa e9 dc ee ff ff e8 85 9d 2f fa <0f> 0b 48 8b 7c 24 10 e8 f9 f2 6e fa e9 76 ee ff ff 48 89 ef e8 dc [ 150.503336][ T6847] RSP: 0018:ffffc90001677858 EFLAGS: 00010293 [ 150.509388][ T6847] RAX: 0000000000000000 RBX: ffff8880a3c6fc78 RCX: ffffffff87440877 [ 150.517332][ T6847] RDX: ffff88808ef28200 RSI: ffffffff874419db RDI: 0000000000000001 [ 150.525291][ T6847] RBP: ffff8880a2a3e700 R08: 0000000000000000 R09: ffff8880a3c6fd27 [ 150.533241][ T6847] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 150.541193][ T6847] R13: ffff8880a3c6fa80 R14: 0000000000000000 R15: ffff8880a3c6fd20 [ 150.549143][ T6847] FS: 00007f513f99a700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 150.558050][ T6847] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 150.564623][ T6847] CR2: 00000000006db0f0 CR3: 000000009f106000 CR4: 00000000001406e0 [ 150.572588][ T6847] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 150.580542][ T6847] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 150.588503][ T6847] Call Trace: [ 150.591816][ T6847] ? rxrpc_abort_call+0x60/0x60 [ 150.596675][ T6847] ? lock_acquire+0x1f1/0xad0 [ 150.601327][ T6847] ? __might_fault+0x11f/0x1d0 [ 150.606064][ T6847] ? finish_wait+0x260/0x260 [ 150.610636][ T6847] ? security_socket_recvmsg+0x8f/0xc0 [ 150.616194][ T6847] ? rxrpc_abort_call+0x60/0x60 [ 150.621056][ T6847] ____sys_recvmsg+0x2c4/0x640 [ 150.625805][ T6847] ? move_addr_to_kernel.part.0+0x110/0x110 [ 150.631691][ T6847] ? __copy_msghdr_from_user+0x2b4/0x4b0 [ 150.637315][ T6847] ? import_iovec+0x23b/0x3d0 [ 150.641980][ T6847] ? compat_import_iovec+0x3d0/0x3d0 [ 150.647253][ T6847] ___sys_recvmsg+0x127/0x200 [ 150.651915][ T6847] ? __copy_msghdr_from_user+0x4b0/0x4b0 [ 150.657546][ T6847] ? lock_downgrade+0x820/0x820 [ 150.662380][ T6847] ? __fget_files+0x294/0x400 [ 150.667042][ T6847] ? __fget_light+0xea/0x280 [ 150.671622][ T6847] do_recvmmsg+0x24d/0x6d0 [ 150.676040][ T6847] ? ___sys_recvmsg+0x200/0x200 [ 150.680870][ T6847] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 150.686841][ T6847] ? lock_acquire+0x1f1/0xad0 [ 150.691501][ T6847] ? find_held_lock+0x2d/0x110 [ 150.696243][ T6847] ? calculate_sigpending+0x42/0xa0 [ 150.701412][ T6847] ? find_held_lock+0x2d/0x110 [ 150.706150][ T6847] __x64_sys_recvmmsg+0x20b/0x260 [ 150.711246][ T6847] ? __do_sys_socketcall+0x550/0x550 [ 150.716504][ T6847] ? lock_is_held_type+0xb0/0xe0 [ 150.721417][ T6847] ? do_syscall_64+0x1c/0xe0 [ 150.725982][ T6847] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 150.731947][ T6847] do_syscall_64+0x60/0xe0 [ 150.736351][ T6847] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 150.742215][ T6847] RIP: 0033:0x446cd9 [ 150.746091][ T6847] Code: Bad RIP value. [ 150.750127][ T6847] RSP: 002b:00007f513f999d98 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 150.758520][ T6847] RAX: ffffffffffffffda RBX: 00000000006dcc38 RCX: 0000000000446cd9 [ 150.766472][ T6847] RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000003 [ 150.774687][ T6847] RBP: 00000000006dcc30 R08: 0000000000000000 R09: 0000000000000000 [ 150.782645][ T6847] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc3c [ 150.790591][ T6847] R13: 0000000000000007 R14: 0000000100000110 R15: 0000000000000018 [ 150.798574][ T6847] Modules linked in: [ 150.810075][ T6847] ---[ end trace 391013e7a9eff1f7 ]--- [ 150.815539][ T6847] RIP: 0010:rxrpc_recvmsg+0x18ab/0x1a03 [ 150.821191][ T6847] Code: 89 e7 e8 28 f3 6e fa e9 eb fc ff ff e8 1e f3 6e fa e9 33 ef ff ff 48 8b 7c 24 10 e8 0f f3 6e fa e9 dc ee ff ff e8 85 9d 2f fa <0f> 0b 48 8b 7c 24 10 e8 f9 f2 6e fa e9 76 ee ff ff 48 89 ef e8 dc [ 150.840906][ T6847] RSP: 0018:ffffc90001677858 EFLAGS: 00010293 [ 150.846956][ T6847] RAX: 0000000000000000 RBX: ffff8880a3c6fc78 RCX: ffffffff87440877 [ 150.854948][ T6847] RDX: ffff88808ef28200 RSI: ffffffff874419db RDI: 0000000000000001 [ 150.863085][ T6847] RBP: ffff8880a2a3e700 R08: 0000000000000000 R09: ffff8880a3c6fd27 [ 150.871181][ T6847] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 150.879163][ T6847] R13: ffff8880a3c6fa80 R14: 0000000000000000 R15: ffff8880a3c6fd20 [ 150.887167][ T6847] FS: 00007f513f99a700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 150.896140][ T6847] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 150.902777][ T6847] CR2: 00007f03564ac000 CR3: 000000009f106000 CR4: 00000000001406e0 [ 150.910793][ T6847] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 150.918762][ T6847] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 150.926787][ T6847] Kernel panic - not syncing: Fatal exception [ 150.933930][ T6847] Kernel Offset: disabled [ 150.938245][ T6847] Rebooting in 86400 seconds..