bisecting fixing commit since ad326970d25cc85128cd22d62398751ad072efff building syzkaller on ff4a3345a1b2a40ff1b8b983153d0b1fcc72f1c5 testing commit ad326970d25cc85128cd22d62398751ad072efff with gcc (GCC) 8.4.1 20210217 kernel signature: 04aee612a36d362797c3efc5f57a95026f6def950f108d8442923a6044df6c92 run #0: basic kernel testing failed: BUG: program execution failed: executor 0: failed to write control pipe: write |1: broken pipe run #1: crashed: BUG: corrupted list in remove_wait_queue run #2: crashed: BUG: corrupted list in remove_wait_queue run #3: crashed: BUG: corrupted list in remove_wait_queue run #4: crashed: BUG: corrupted list in remove_wait_queue run #5: crashed: BUG: corrupted list in remove_wait_queue run #6: crashed: BUG: corrupted list in remove_wait_queue run #7: crashed: BUG: corrupted list in remove_wait_queue run #8: crashed: BUG: corrupted list in remove_wait_queue run #9: crashed: BUG: corrupted list in remove_wait_queue run #10: crashed: BUG: corrupted list in remove_wait_queue run #11: crashed: BUG: corrupted list in remove_wait_queue run #12: crashed: BUG: corrupted list in remove_wait_queue run #13: crashed: BUG: corrupted list in remove_wait_queue run #14: crashed: BUG: corrupted list in corrupted run #15: crashed: BUG: corrupted list in corrupted run #16: crashed: BUG: corrupted list in corrupted run #17: crashed: BUG: corrupted list in corrupted run #18: crashed: BUG: corrupted list in corrupted run #19: crashed: BUG: corrupted list in corrupted testing current HEAD 2965db2e004cf9c92b87c1f559e9812c0ae878c1 testing commit 2965db2e004cf9c92b87c1f559e9812c0ae878c1 with gcc (GCC) 8.4.1 20210217 kernel signature: ecf52bc25dd3be5071658cfb0c0f85a7937d8793054209052e4602149811e582 run #0: crashed: BUG: corrupted list in remove_wait_queue run #1: crashed: BUG: corrupted list in remove_wait_queue run #2: crashed: BUG: corrupted list in remove_wait_queue run #3: crashed: BUG: corrupted list in remove_wait_queue run #4: crashed: BUG: corrupted list in remove_wait_queue run #5: crashed: BUG: corrupted list in remove_wait_queue run #6: crashed: BUG: corrupted list in remove_wait_queue run #7: crashed: BUG: corrupted list in remove_wait_queue run #8: crashed: BUG: corrupted list in remove_wait_queue run #9: crashed: BUG: corrupted list in corrupted revisions tested: 2, total time: 49m1.144242032s (build: 29m52.232630691s, test: 18m20.883117726s) the crash still happens on HEAD commit msg: Linux 4.19.188 crash: BUG: corrupted list in corrupted bond0 (unregistering): Released all slaves list_del corruption, ffff8881be6a7640->next is LIST_POISON1 (dead000000000100) list_del corruption, ffff8881baa1f640->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:47! kernel BUG at lib/list_debug.c:47! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 20793 Comm: syz-executor018 Not tainted 4.19.188-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x4a lib/list_debug.c:45 Code: f8 ff 0f 0b 4c 89 e2 48 89 de 48 c7 c7 00 77 8b 87 e8 e5 2e f8 ff 0f 0b 4c 89 ea 48 89 de 48 c7 c7 a0 76 8b 87 e8 d1 2e f8 ff <0f> 0b 48 89 de 48 c7 c7 c0 77 8b 87 e8 c0 2e f8 ff 0f 0b 48 89 de RSP: 0018:ffff8881be6a74d0 EFLAGS: 00010086 RAX: 000000000000004e RBX: ffff8881be6a7640 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878b7400 RDI: ffffffff8a3e5aa0 RBP: ffff8881be6a74e8 R08: ffffed103ecc5081 R09: ffffed103ecc5080 R10: ffffed103ecc5080 R11: ffff8881f6628407 R12: dead000000000200 R13: dead000000000100 R14: ffff8881da06c3c0 R15: ffff8881e6f8b700 FS: 00007fc388ec9700(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002001d008 CR3: 00000001df07a003 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del include/linux/list.h:125 [inline] __remove_wait_queue include/linux/wait.h:184 [inline] remove_wait_queue+0x30/0x1b0 kernel/sched/wait.c:44 tipc_send_group_bcast+0x33a/0xa10 net/tipc/socket.c:1022 tipc_send_group_mcast net/tipc/socket.c:1109 [inline] __tipc_sendmsg+0x449/0x12c0 net/tipc/socket.c:1317 tipc_sendmsg+0x4b/0x70 net/tipc/socket.c:1276 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xac/0xf0 net/socket.c:632 ___sys_sendmsg+0x28e/0x950 net/socket.c:2115 __sys_sendmmsg+0x160/0x370 net/socket.c:2210 __do_sys_sendmmsg net/socket.c:2239 [inline] __se_sys_sendmmsg net/socket.c:2236 [inline] __x64_sys_sendmmsg+0x98/0x100 net/socket.c:2236 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4459c9 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 RSP: 002b:00007fc388ec9318 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00000000004ca428 RCX: 00000000004459c9 RDX: 08000000000000b0 RSI: 0000000020000a40 RDI: 0000000000000004 RBP: 00000000004ca420 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000049a064 R13: 00007ffe4f5f560f R14: 00007fc388ec9400 R15: 0000000000022000 Modules linked in: ---[ end trace 501ce66ba89fbbd1 ]--- invalid opcode: 0000 [#2] PREEMPT SMP KASAN RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x4a lib/list_debug.c:45 CPU: 1 PID: 20802 Comm: syz-executor018 Tainted: G D 4.19.188-syzkaller #0 Code: f8 ff 0f 0b 4c 89 e2 48 89 de 48 c7 c7 00 77 8b 87 e8 e5 2e f8 ff 0f 0b 4c 89 ea 48 89 de 48 c7 c7 a0 76 8b 87 e8 d1 2e f8 ff <0f> 0b 48 89 de 48 c7 c7 c0 77 8b 87 e8 c0 2e f8 ff 0f 0b 48 89 de Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RSP: 0018:ffff8881be6a74d0 EFLAGS: 00010086 RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x4a lib/list_debug.c:45 RAX: 000000000000004e RBX: ffff8881be6a7640 RCX: 0000000000000000 Code: f8 ff 0f 0b 4c 89 e2 48 89 de 48 c7 c7 00 77 8b 87 e8 e5 2e f8 ff 0f 0b 4c 89 ea 48 89 de 48 c7 c7 a0 76 8b 87 e8 d1 2e f8 ff <0f> 0b 48 89 de 48 c7 c7 c0 77 8b 87 e8 c0 2e f8 ff 0f 0b 48 89 de RDX: 0000000000000000 RSI: ffffffff878b7400 RDI: ffffffff8a3e5aa0 RSP: 0018:ffff8881baa1f4d0 EFLAGS: 00010086 RBP: ffff8881be6a74e8 R08: ffffed103ecc5081 R09: ffffed103ecc5080 R10: ffffed103ecc5080 R11: ffff8881f6628407 R12: dead000000000200 RAX: 000000000000004e RBX: ffff8881baa1f640 RCX: 0000000000000000 R13: dead000000000100 R14: ffff8881da06c3c0 R15: ffff8881e6f8b700 RDX: 0000000000000000 RSI: ffffffff878b7400 RDI: ffffffff8a3e5aa0 FS: 00007fc388ec9700(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000 RBP: ffff8881baa1f4e8 R08: ffffed103ece5081 R09: ffffed103ece5080 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 R10: ffffed103ece5080 R11: ffff8881f6728407 R12: dead000000000200 CR2: 000000002001d008 CR3: 00000001df07a003 CR4: 00000000001606f0 R13: dead000000000100 R14: ffff8881d99d7540 R15: ffff8881ef532e80 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 FS: 00007fc388ec9700(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033