syzbot


kernel BUG in rxrpc_destroy_all_connections

Status: auto-closed as invalid on 2022/01/14 17:56
Reported-by: syzbot+bf9c3ae5a6f9fd3d043c@syzkaller.appspotmail.com
First crash: 502d, last: 443d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG at net/rxrpc/conn_object.c:LINE! (2) 7 664d 727d 0/24 auto-closed as invalid on 2021/05/17 08:51
upstream kernel BUG at net/rxrpc/conn_object.c:LINE! C done 855 750d 815d 17/24 fixed on 2020/11/16 12:12

Sample crash report:
rxrpc: Assertion failed
------------[ cut here ]------------
kernel BUG at net/rxrpc/conn_object.c:479!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 18930 Comm: kworker/u4:9 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:rxrpc_destroy_all_connections.cold+0x11/0x13 net/rxrpc/conn_object.c:479
Code: c0 48 c7 c1 a0 86 a5 8a 48 89 f2 48 c7 c7 20 83 a5 8a e8 ea a6 c0 ff 0f 0b e8 35 13 44 f8 48 c7 c7 20 86 a5 8a e8 d7 a6 c0 ff <0f> 0b e8 22 13 44 f8 48 c7 c7 e0 8a a5 8a e8 c4 a6 c0 ff 0f 0b e8
RSP: 0018:ffffc90001b1fb28 EFLAGS: 00010282
RAX: 0000000000000017 RBX: ffff88801bce8000 RCX: 0000000000000000
RDX: ffff888079b28000 RSI: ffffffff815dcd08 RDI: fffff52000363f57
RBP: ffff88801bce8064 R08: 0000000000000017 R09: 0000000000000000
R10: ffffffff815d6aae R11: 0000000000000000 R12: ffff88801bce8068
R13: ffff88801bce8078 R14: ffff88801bce8078 R15: ffff88801bce7eb8
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b777fb7160 CR3: 000000000b68e000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 rxrpc_exit_net+0x155/0x2f0 net/rxrpc/net_ns.c:119
 ops_exit_list+0xb0/0x160 net/core/net_namespace.c:168
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:591
 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace a9e275c2c80989f8 ]---
RIP: 0010:rxrpc_destroy_all_connections.cold+0x11/0x13 net/rxrpc/conn_object.c:479
Code: c0 48 c7 c1 a0 86 a5 8a 48 89 f2 48 c7 c7 20 83 a5 8a e8 ea a6 c0 ff 0f 0b e8 35 13 44 f8 48 c7 c7 20 86 a5 8a e8 d7 a6 c0 ff <0f> 0b e8 22 13 44 f8 48 c7 c7 e0 8a a5 8a e8 c4 a6 c0 ff 0f 0b e8
RSP: 0018:ffffc90001b1fb28 EFLAGS: 00010282
RAX: 0000000000000017 RBX: ffff88801bce8000 RCX: 0000000000000000
RDX: ffff888079b28000 RSI: ffffffff815dcd08 RDI: fffff52000363f57
RBP: ffff88801bce8064 R08: 0000000000000017 R09: 0000000000000000
R10: ffffffff815d6aae R11: 0000000000000000 R12: ffff88801bce8068
R13: ffff88801bce8078 R14: ffff88801bce8078 R15: ffff88801bce7eb8
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00d22db40 CR3: 0000000016ace000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-bpf-next-kasan-gce 2021/09/16 17:55 bpf-next 336562752acc aae492f2 .config log report info kernel BUG in rxrpc_destroy_all_connections
ci-upstream-bpf-next-kasan-gce 2021/09/04 13:48 bpf-next a16ef91aa61a d236a457 .config log report info kernel BUG in rxrpc_destroy_all_connections
ci-upstream-bpf-next-kasan-gce 2021/08/18 09:25 bpf-next 3c3bd542ffbb a2fe1cb5 .config log report info kernel BUG in rxrpc_destroy_all_connections
ci-upstream-bpf-next-kasan-gce 2021/07/19 23:29 bpf-next 08f71a1e39a1 bc48c9ab .config log report info kernel BUG in rxrpc_destroy_all_connections
* Struck through repros no longer work on HEAD.