syzbot


WARNING in unreserve_psock

Status: fixed on 2023/09/28 17:51
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+dd1339599f1840e4cc65@syzkaller.appspotmail.com
Fix commit: 9f8d0dc0ec4a kcm: Fix unnecessary psock unreservation.
First crash: 345d, last: 337d
Cause bisection: introduced by (bisect log) :
commit c31a25e1db486f36a0ffe3c849b0a82cda3db7db
Author: David Howells <dhowells@redhat.com>
Date: Fri Jun 9 10:02:21 2023 +0000

  kcm: Send multiple frags in one sendmsg()

Crash: WARNING in unreserve_psock (log)
Repro: C syz .config
  
Discussions (2)
Title Replies (including bot) Last reply
[PATCH net-next] kcm: Fix unnecessary psock unreservation. 2 (2) 2023/06/17 07:20
[syzbot] [net?] WARNING in unreserve_psock 2 (5) 2023/06/14 23:41
Last patch testing requests (1)
Created Duration User Patch Repo Result
2023/06/14 17:22 27m dhowells@redhat.com patch git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git main OK log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5007 at net/kcm/kcmsock.c:533 unreserve_psock+0x2e1/0x6e0 net/kcm/kcmsock.c:533
Modules linked in:
CPU: 0 PID: 5007 Comm: syz-executor222 Not tainted 6.4.0-rc5-syzkaller-01194-gc29e012eae29 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:unreserve_psock+0x2e1/0x6e0 net/kcm/kcmsock.c:533
Code: 3c f8 48 89 ef e8 df b1 ff ff 4c 89 f7 e8 e7 f5 cd 00 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f e9 c4 f2 3c f8 e8 bf f2 3c f8 <0f> 0b 4c 89 f7 e8 c5 f5 cd 00 eb dc e8 ae f2 3c f8 0f 0b e9 f0 fe
RSP: 0018:ffffc90003a9f6a0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888077f60000 RCX: 0000000000000000
RDX: ffff8880284d3b80 RSI: ffffffff89475391 RDI: ffffc90003a9f630
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003
R10: fffff52000753ec6 R11: 0000000000000005 R12: ffff88802cfd8000
R13: ffff888077f60000 R14: ffff88802cfd81c0 R15: ffff888077f60598
FS:  000055555562f300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200006c8 CR3: 0000000025a48000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kcm_write_msgs+0x571/0x14b0 net/kcm/kcmsock.c:699
 kcm_sendmsg+0x1fe1/0x2720 net/kcm/kcmsock.c:903
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg+0xde/0x190 net/socket.c:747
 ____sys_sendmsg+0x344/0x920 net/socket.c:2493
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2547
 __sys_sendmmsg+0x18f/0x460 net/socket.c:2633
 __do_sys_sendmmsg net/socket.c:2662 [inline]
 __se_sys_sendmmsg net/socket.c:2659 [inline]
 __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2659
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7efed1630b39
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff10fc2e08 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efed1630b39
RDX: 0000000000000001 RSI: 00000000200006c0 RDI: 0000000000000003
RBP: 00007efed15f4ce0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007efed15f4d70
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Crashes (2816):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/06/13 13:48 net-next c29e012eae29 749afb64 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in unreserve_psock
2023/06/17 07:53 net-next c08afcdcf952 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in unreserve_psock
2023/06/21 04:48 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/21 04:46 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/21 03:42 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/21 02:42 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/21 02:30 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/21 00:55 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 23:54 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 22:54 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 22:10 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 21:23 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 20:15 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 20:11 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 17:48 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 17:14 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 17:13 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 16:13 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 15:19 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 14:59 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 14:29 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 14:07 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 13:11 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 12:08 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 05:50 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 05:45 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 04:43 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 03:23 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 02:59 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 01:50 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 00:45 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/20 00:28 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 22:55 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 21:32 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 20:31 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 19:25 linux-next f7efed9f38f8 d521bc56 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 13:11 linux-next f7efed9f38f8 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 12:58 linux-next f7efed9f38f8 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 11:45 linux-next f7efed9f38f8 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 11:34 linux-next f7efed9f38f8 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 10:32 linux-next f7efed9f38f8 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 09:26 linux-next f7efed9f38f8 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 09:11 linux-next f7efed9f38f8 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
2023/06/19 08:06 linux-next f7efed9f38f8 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in unreserve_psock
* Struck through repros no longer work on HEAD.