syzbot


general protection fault in kernel_accept (2)

Status: closed as invalid on 2021/10/04 21:36
Reported-by: syzbot+@syzkaller.appspotmail.com
First crash: 367d, last: 339d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in kernel_accept (3) 1 209d 204d 0/22 auto-closed as invalid on 2022/03/28 23:53
upstream general protection fault in kernel_accept C 280 1284d 1445d 12/22 fixed on 2019/03/06 07:43

Sample crash report:
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 8422 Comm: kworker/u4:6 Not tainted 5.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: tipc_rcv tipc_topsrv_accept
RIP: 0010:kernel_accept+0x22d/0x350 net/socket.c:3599
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 e3 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 20 48 8d 7b 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ee 00 00 00 48 8b 7b 08 e8 70 d6 5b fa e8 6b 73
RSP: 0018:ffffc9000c5d7c38 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff870f13a2 RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8fccfa1f
R10: ffffffff870f1394 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888076450000 R14: ffff88802e8c5fa0 R15: 1ffff920018baf92
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002036a030 CR3: 0000000067cab000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tipc_topsrv_accept+0x197/0x280 net/tipc/topsrv.c:460
 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace 303a00b112cae2eb ]---
RIP: 0010:kernel_accept+0x22d/0x350 net/socket.c:3599
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 e3 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 20 48 8d 7b 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ee 00 00 00 48 8b 7b 08 e8 70 d6 5b fa e8 6b 73
RSP: 0018:ffffc9000c5d7c38 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff870f13a2 RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8fccfa1f
R10: ffffffff870f1394 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888076450000 R14: ffff88802e8c5fa0 R15: 1ffff920018baf92
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055eec2d14160 CR3: 000000000b68e000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2021/07/22 08:51 net e40cba9490ba 29c3f20f .config log report info general protection fault in kernel_accept
ci-upstream-net-this-kasan-gce 2021/06/24 17:41 net c2f5c57d99de ec865f6a .config log report info general protection fault in kernel_accept