[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 67.425537][ T9440] sshd (9440) used greatest stack depth: 23136 bytes left [....] 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: [ 71.366854][ T26] kauditd_printk_skb: 7 callbacks suppressed [ 71.366870][ T26] audit: type=1400 audit(1558407596.175:35): avc: denied { map } for pid=9500 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 '10.128.1.59' (ECDSA) to the list of known hosts. executing program [ 77.960661][ T26] audit: type=1400 audit(1558407602.775:36): avc: denied { map } for pid=9512 comm="syz-executor839" path="/root/syz-executor839485050" 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 [ 77.964567][ T9512] ------------[ cut here ]------------ [ 77.993179][ T9512] DEBUG_LOCKS_WARN_ON(class_idx > MAX_LOCKDEP_KEYS) [ 77.993252][ T9512] WARNING: CPU: 0 PID: 9512 at kernel/locking/lockdep.c:3764 __lock_acquire+0x17b5/0x5490 [ 78.009678][ T9512] Kernel panic - not syncing: panic_on_warn set ... [ 78.016270][ T9512] CPU: 0 PID: 9512 Comm: syz-executor839 Not tainted 5.2.0-rc1+ #1 [ 78.024168][ T9512] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.034222][ T9512] Call Trace: [ 78.037500][ T9512] dump_stack+0x172/0x1f0 [ 78.041815][ T9512] ? __lock_acquire+0x16d0/0x5490 [ 78.046845][ T9512] panic+0x2cb/0x744 [ 78.050725][ T9512] ? __warn_printk+0xf3/0xf3 [ 78.055292][ T9512] ? __lock_acquire+0x17b5/0x5490 [ 78.060294][ T9512] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.066520][ T9512] ? __warn.cold+0x5/0x4d [ 78.070844][ T9512] ? __warn+0xe8/0x1d0 [ 78.074890][ T9512] ? __lock_acquire+0x17b5/0x5490 [ 78.079892][ T9512] __warn.cold+0x20/0x4d [ 78.084112][ T9512] ? vprintk_emit+0x1ea/0x700 [ 78.088770][ T9512] ? __lock_acquire+0x17b5/0x5490 [ 78.093797][ T9512] report_bug+0x263/0x2b0 [ 78.098116][ T9512] do_error_trap+0x11b/0x200 [ 78.102679][ T9512] do_invalid_op+0x37/0x50 [ 78.107095][ T9512] ? __lock_acquire+0x17b5/0x5490 [ 78.112094][ T9512] invalid_op+0x14/0x20 [ 78.116223][ T9512] RIP: 0010:__lock_acquire+0x17b5/0x5490 [ 78.121829][ T9512] Code: d2 0f 85 c7 2c 00 00 44 8b 3d a7 a0 29 08 45 85 ff 0f 85 57 f3 ff ff 48 c7 c6 20 c1 6b 87 48 c7 c7 00 98 6b 87 e8 09 d5 eb ff <0f> 0b e9 40 f3 ff ff 0f 0b e9 83 f1 ff ff 8b 0d 47 88 0e 09 85 c9 [ 78.141409][ T9512] RSP: 0018:ffff8880942c73e0 EFLAGS: 00010086 [ 78.147464][ T9512] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 78.155409][ T9512] RDX: 0000000000000000 RSI: ffffffff815ac7e6 RDI: ffffed1012858e6e [ 78.163360][ T9512] RBP: ffff8880942c7588 R08: ffff88809b03e640 R09: fffffbfff11730e9 [ 78.171307][ T9512] R10: fffffbfff11730e8 R11: ffffffff88b98743 R12: 0000000013941909 [ 78.179268][ T9512] R13: 0000000000000000 R14: 0000000000041909 R15: 0000000000000000 [ 78.187232][ T9512] ? vprintk_func+0x86/0x189 [ 78.191800][ T9512] ? sock_diag_rcv+0x2b/0x40 [ 78.196368][ T9512] ? netlink_unicast+0x531/0x710 [ 78.201282][ T9512] ? netlink_sendmsg+0x8ae/0xd70 [ 78.206193][ T9512] ? sock_sendmsg+0xd7/0x130 [ 78.210771][ T9512] ? ___sys_sendmsg+0x803/0x920 [ 78.215617][ T9512] ? __sys_sendmsg+0x105/0x1d0 [ 78.220381][ T9512] ? __x64_sys_sendmsg+0x78/0xb0 [ 78.225294][ T9512] ? do_syscall_64+0xfd/0x680 [ 78.229950][ T9512] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.235999][ T9512] ? mark_held_locks+0xf0/0xf0 [ 78.240740][ T9512] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 78.246360][ T9512] ? find_held_lock+0x35/0x130 [ 78.251100][ T9512] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 78.256708][ T9512] lock_acquire+0x16f/0x3f0 [ 78.261193][ T9512] ? rhashtable_walk_enter+0xf9/0x390 [ 78.266541][ T9512] _raw_spin_lock+0x2f/0x40 [ 78.271035][ T9512] ? rhashtable_walk_enter+0xf9/0x390 [ 78.276382][ T9512] rhashtable_walk_enter+0xf9/0x390 [ 78.281571][ T9512] __tipc_dump_start+0x1fa/0x3c0 [ 78.286485][ T9512] tipc_dump_start+0x70/0x90 [ 78.291057][ T9512] __netlink_dump_start+0x4f8/0x7d0 [ 78.296229][ T9512] ? __tipc_dump_start+0x3c0/0x3c0 [ 78.301318][ T9512] tipc_sock_diag_handler_dump+0x1d9/0x270 [ 78.307109][ T9512] ? __tipc_diag_gen_cookie+0x90/0x90 [ 78.312473][ T9512] ? sock_diag_rcv+0x1c/0x40 [ 78.317041][ T9512] ? __tipc_dump_start+0x3c0/0x3c0 [ 78.322142][ T9512] ? tipc_unregister_sysctl+0x20/0x20 [ 78.327492][ T9512] ? tipc_ioctl+0x2e0/0x2e0 [ 78.331979][ T9512] sock_diag_rcv_msg+0x319/0x410 [ 78.336918][ T9512] netlink_rcv_skb+0x177/0x450 [ 78.341672][ T9512] ? sock_diag_bind+0x80/0x80 [ 78.346333][ T9512] ? netlink_ack+0xb50/0xb50 [ 78.350901][ T9512] ? kasan_check_read+0x11/0x20 [ 78.355756][ T9512] ? netlink_deliver_tap+0x254/0xbf0 [ 78.361020][ T9512] sock_diag_rcv+0x2b/0x40 [ 78.365434][ T9512] netlink_unicast+0x531/0x710 [ 78.370188][ T9512] ? netlink_attachskb+0x770/0x770 [ 78.375273][ T9512] ? _copy_from_iter_full+0x25d/0x8c0 [ 78.380635][ T9512] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.386863][ T9512] netlink_sendmsg+0x8ae/0xd70 [ 78.391603][ T9512] ? netlink_unicast+0x710/0x710 [ 78.396620][ T9512] ? tomoyo_socket_sendmsg+0x26/0x30 [ 78.401881][ T9512] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.408098][ T9512] ? security_socket_sendmsg+0x8d/0xc0 [ 78.413542][ T9512] ? netlink_unicast+0x710/0x710 [ 78.418461][ T9512] sock_sendmsg+0xd7/0x130 [ 78.422853][ T9512] ___sys_sendmsg+0x803/0x920 [ 78.427530][ T9512] ? copy_msghdr_from_user+0x430/0x430 [ 78.432971][ T9512] ? prep_transhuge_page+0xa0/0xa0 [ 78.438064][ T9512] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.444279][ T9512] ? __handle_mm_fault+0x7cb/0x3eb0 [ 78.449543][ T9512] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.455875][ T9512] ? __fget_light+0x1a9/0x230 [ 78.460526][ T9512] ? __fdget+0x1b/0x20 [ 78.464576][ T9512] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 78.470794][ T9512] __sys_sendmsg+0x105/0x1d0 [ 78.475373][ T9512] ? __ia32_sys_shutdown+0x80/0x80 [ 78.480470][ T9512] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 78.485901][ T9512] ? do_syscall_64+0x26/0x680 [ 78.490571][ T9512] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.496610][ T9512] ? do_syscall_64+0x26/0x680 [ 78.501353][ T9512] __x64_sys_sendmsg+0x78/0xb0 [ 78.506100][ T9512] do_syscall_64+0xfd/0x680 [ 78.510594][ T9512] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.516466][ T9512] RIP: 0033:0x440219 [ 78.520453][ T9512] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 78.540055][ T9512] RSP: 002b:00007ffc1ecbd988 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 78.548458][ T9512] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440219 [ 78.556408][ T9512] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 [ 78.564469][ T9512] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 78.572437][ T9512] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401aa0 [ 78.580401][ T9512] R13: 0000000000401b30 R14: 0000000000000000 R15: 0000000000000000 [ 78.589434][ T9512] Kernel Offset: disabled [ 78.593769][ T9512] Rebooting in 86400 seconds..