[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.44' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.676699] list_del corruption, ffff888095577878->next is LIST_POISON1 (dead000000000100) [ 34.685441] ------------[ cut here ]------------ [ 34.690178] kernel BUG at lib/list_debug.c:45! [ 34.694749] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 34.700094] CPU: 1 PID: 8108 Comm: syz-executor189 Not tainted 4.19.210-syzkaller #0 [ 34.707949] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.717287] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 34.722975] Code: e8 11 43 f7 ff 0f 0b 48 89 ee 48 c7 c7 40 e4 b3 88 e8 00 43 f7 ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 80 e3 b3 88 e8 ec 42 f7 ff <0f> 0b 4c 89 e2 48 89 ee 48 c7 c7 e0 e3 b3 88 e8 d8 42 f7 ff 0f 0b [ 34.741853] RSP: 0018:ffff888095577750 EFLAGS: 00010086 [ 34.747189] RAX: 000000000000004e RBX: ffff888095577860 RCX: 0000000000000000 [ 34.754434] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012aaeedc [ 34.761689] RBP: ffff888095577878 R08: 000000000000004e R09: 0000000000000000 [ 34.768985] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 34.776246] R13: dead000000000100 R14: ffff888095577880 R15: 0000000000000007 [ 34.783502] FS: 00007f6d66dcd700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 34.791707] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.797613] CR2: 00007f6d66e70af8 CR3: 00000000a10fa000 CR4: 00000000003406e0 [ 34.804865] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.812129] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.819386] Call Trace: [ 34.821971] remove_wait_queue+0x2c/0x180 [ 34.826097] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.830657] tipc_send_group_bcast+0x317/0xa10 [ 34.835219] ? tipc_shutdown+0x310/0x310 [ 34.839256] ? __lock_acquire+0x6de/0x3ff0 [ 34.843480] ? do_wait_intr_irq+0x270/0x270 [ 34.847779] ? finish_task_switch+0x1db/0x760 [ 34.852260] ? __lock_acquire+0x6de/0x3ff0 [ 34.856475] __tipc_sendmsg+0xa2b/0x1320 [ 34.860513] ? mark_held_locks+0xf0/0xf0 [ 34.864561] ? rw_copy_check_uvector+0x27c/0x340 [ 34.869294] ? tipc_sendmcast+0xba0/0xba0 [ 34.873422] ? lock_sock_nested+0xa6/0x110 [ 34.877632] ? mark_held_locks+0xa6/0xf0 [ 34.881676] ? __local_bh_enable_ip+0x159/0x270 [ 34.886324] tipc_sendmsg+0x4c/0x70 [ 34.889928] ? __tipc_sendmsg+0x1320/0x1320 [ 34.894236] sock_sendmsg+0xc3/0x120 [ 34.897927] ___sys_sendmsg+0x7bb/0x8e0 [ 34.901880] ? copy_msghdr_from_user+0x440/0x440 [ 34.906611] ? __fget+0x32f/0x510 [ 34.910043] ? lock_downgrade+0x720/0x720 [ 34.914174] ? check_preemption_disabled+0x41/0x280 [ 34.919168] ? check_preemption_disabled+0x41/0x280 [ 34.924162] ? __fget+0x356/0x510 [ 34.927593] ? do_dup2+0x450/0x450 [ 34.931126] ? tipc_setsockopt+0x50a/0x9f0 [ 34.935340] ? tipc_sk_withdraw+0x550/0x550 [ 34.939651] ? aa_af_perm+0x230/0x230 [ 34.943427] ? __fdget+0x1d0/0x230 [ 34.946945] __x64_sys_sendmsg+0x132/0x220 [ 34.951156] ? __sys_sendmsg+0x1b0/0x1b0 [ 34.955193] ? __se_sys_futex+0x298/0x3b0 [ 34.959325] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 34.964675] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.969670] ? do_syscall_64+0x21/0x620 [ 34.973620] do_syscall_64+0xf9/0x620 [ 34.977399] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.982567] RIP: 0033:0x7f6d66e1b9d9 [ 34.986276] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 35.005166] RSP: 002b:00007f6d66dcd318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 35.012853] RAX: ffffffffffffffda RBX: 00007f6d66ea3408 RCX: 00007f6d66e1b9d9 [ 35.020172] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000004 [ 35.027415] RBP: 00007f6d66ea3400 R08: 0000000000000000 R09: 0000000000000000 [ 35.034659] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6d66e71074 [ 35.041906] R13: 00007ffe39bbac0f R14: 00007f6d66dcd400 R15: 0000000000022000 [ 35.049151] Modules linked in: [ 35.052327] ---[ end trace d6d2e8741ae47031 ]--- [ 35.057075] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 35.062762] Code: e8 11 43 f7 ff 0f 0b 48 89 ee 48 c7 c7 40 e4 b3 88 e8 00 43 f7 ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 80 e3 b3 88 e8 ec 42 f7 ff <0f> 0b 4c 89 e2 48 89 ee 48 c7 c7 e0 e3 b3 88 e8 d8 42 f7 ff 0f 0b [ 35.081637] RSP: 0018:ffff888095577750 EFLAGS: 00010086 [ 35.086971] RAX: 000000000000004e RBX: ffff888095577860 RCX: 0000000000000000 [ 35.094217] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012aaeedc [ 35.101462] RBP: ffff888095577878 R08: 000000000000004e R09: 0000000000000000 [ 35.108706] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 35.115959] R13: dead000000000100 R14: ffff888095577880 R15: 0000000000000007 [ 35.123285] FS: 00007f6d66dcd700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 35.131486] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.137383] CR2: 00007f6d66e70af8 CR3: 00000000a10fa000 CR4: 00000000003406e0 [ 35.144995] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.152243] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.159488] Kernel panic - not syncing: Fatal exception [ 35.165073] Kernel Offset: disabled [ 35.168692] Rebooting in 86400 seconds..