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WARNING in tcp_recvmsg_locked

Status: auto-obsoleted due to no activity on 2023/11/06 08:49
Subsystems: net
[Documentation on labels]
First crash: 344d, last: 344d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in tcp_recvmsg_locked (2) net C done 5 2d09h 203d 0/27 upstream: reported C repro on 2023/12/05 17:53
linux-6.1 WARNING in tcp_recvmsg_locked origin:upstream C 1 16d 82d 0/3 upstream: reported C repro on 2024/04/04 07:11

Sample crash report:
------------[ cut here ]------------
TCP recvmsg seq # bug 2: copied F2E3B645, seq F2E2B686, rcvnxt F2E2B6F0, fl 0
WARNING: CPU: 1 PID: 12435 at net/ipv4/tcp.c:2398 tcp_recvmsg_locked+0x9d4/0x24b0 net/ipv4/tcp.c:2398
Modules linked in:
CPU: 1 PID: 12435 Comm: syz-executor.5 Not tainted 6.5.0-rc1-syzkaller-00172-g4bdf79d686b4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:tcp_recvmsg_locked+0x9d4/0x24b0 net/ipv4/tcp.c:2398
Code: e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 c6 18 00 00 48 8b 04 24 89 da 48 c7 c7 e0 9d 8c 8b 44 8b 44 24 24 8b 30 e8 8c a6 9f f8 <0f> 0b e9 e4 fa ff ff e8 c0 da d8 f8 49 8d 5e 60 be 08 00 00 00 48
RSP: 0018:ffffc9000b2cf9e0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 00000000f2e2b686 RCX: ffffc9000cc07000
RDX: 0000000000040000 RSI: ffffffff814d3c06 RDI: 0000000000000001
RBP: ffff8880225908f4 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: 000000000000006a R14: ffff8880225908e8 R15: ffff8880225908c0
FS:  00007f1e74ef36c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43c6f78038 CR3: 0000000051360000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 tcp_recvmsg+0x12e/0x670 net/ipv4/tcp.c:2566
 inet_recvmsg+0x114/0x640 net/ipv4/af_inet.c:862
 sock_recvmsg_nosec net/socket.c:1020 [inline]
 sock_recvmsg+0xe2/0x170 net/socket.c:1041
 __sys_recvfrom+0x1d5/0x310 net/socket.c:2186
 __do_sys_recvfrom net/socket.c:2204 [inline]
 __se_sys_recvfrom net/socket.c:2200 [inline]
 __x64_sys_recvfrom+0xe0/0x1b0 net/socket.c:2200
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1e7427cb29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1e74ef30c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
RAX: ffffffffffffffda RBX: 00007f1e7439bf80 RCX: 00007f1e7427cb29
RDX: 0000000000000047 RSI: 0000000020000300 RDI: 0000000000000003
RBP: 00007f1e742c847a R08: 00000000200001c0 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1e7439bf80 R15: 00007ffd8c6454d8
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/07/17 07:52 net 4bdf79d686b4 35d9ecc5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in tcp_recvmsg_locked
* Struck through repros no longer work on HEAD.