syzbot


general protection fault in sock_release

Status: auto-closed as invalid on 2021/11/13 17:50
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+84b87d0226dab4b69d95@syzkaller.appspotmail.com
First crash: 1222d, last: 1074d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in sock_release (2) net 1 957d 957d 20/27 fixed on 2022/03/08 16:11

Sample crash report:
general protection fault, probably for non-canonical address 0xfff10c0e7dfbf004: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0xff888073efdf8020-0xff888073efdf8027]
CPU: 0 PID: 11296 Comm: kworker/u4:8 Not tainted 5.12.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:__sock_release net/socket.c:594 [inline]
RIP: 0010:sock_release+0x24/0x140 net/socket.c:627
Code: f9 eb 8a 0f 1f 00 41 57 41 56 41 54 53 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 67 53 f4 f9 49 8d 5e 20 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 6d 2b 38 fa 48 8b 1b 48 85 db 74
RSP: 0018:ffffc90001b4fc18 EFLAGS: 00010a02
RAX: 1ff1100e7dfbf004 RBX: ff888073efdf8020 RCX: ffff88807569d4c0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ff888073efdf8000
RBP: ffffffff8b831668 R08: ffffffff88188e45 R09: ffffffff83f45a7b
R10: 0000000000000009 R11: ffff88807569d4c0 R12: dffffc0000000000
R13: 1ffffffff1b6b255 R14: ff888073efdf8000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 0000000071785000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 inet_ctl_sock_destroy include/net/inet_common.h:65 [inline]
 tcp_sk_exit+0x19d/0x270 net/ipv4/tcp_ipv4.c:2839
 ops_exit_list net/core/net_namespace.c:175 [inline]
 cleanup_net+0x708/0xbd0 net/core/net_namespace.c:595
 process_one_work+0x789/0xfd0 kernel/workqueue.c:2275
 worker_thread+0xac1/0x1300 kernel/workqueue.c:2421
 kthread+0x39a/0x3c0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
---[ end trace d98924a1f9652506 ]---
RIP: 0010:__sock_release net/socket.c:594 [inline]
RIP: 0010:sock_release+0x24/0x140 net/socket.c:627
Code: f9 eb 8a 0f 1f 00 41 57 41 56 41 54 53 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 67 53 f4 f9 49 8d 5e 20 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 6d 2b 38 fa 48 8b 1b 48 85 db 74
RSP: 0018:ffffc90001b4fc18 EFLAGS: 00010a02
RAX: 1ff1100e7dfbf004 RBX: ff888073efdf8020 RCX: ffff88807569d4c0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ff888073efdf8000
RBP: ffffffff8b831668 R08: ffffffff88188e45 R09: ffffffff83f45a7b
R10: 0000000000000009 R11: ffff88807569d4c0 R12: dffffc0000000000
R13: 1ffffffff1b6b255 R14: ff888073efdf8000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005575e08092f0 CR3: 0000000078a63000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/03/20 07:20 upstream 1c273e10bc0c 3d01c4de .config console log report info ci-upstream-kasan-gce-smack-root general protection fault in sock_release
2021/06/02 10:05 net-next-old 7fc6d3abc084 032639db .config console log report info ci-upstream-net-kasan-gce general protection fault in sock_release
2021/08/15 17:49 linux-next 4b358aabb93a 2489ab88 .config console log report info ci-upstream-linux-next-kasan-gce-root general protection fault in sock_release
* Struck through repros no longer work on HEAD.