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TCP recvmsg seq # bug 2: copied 65AC5197, seq 65AC515F, rcvnxt 65AC5160, fl 40
WARNING: CPU: 1 PID: 15344 at net/ipv4/tcp.c:2396 tcp_recvmsg_locked+0xa54/0x2490 net/ipv4/tcp.c:2396
Modules linked in:
CPU: 1 PID: 15344 Comm: syz-executor.2 Not tainted 6.7.0-rc3-syzkaller-00690-g8470e4368b0f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:tcp_recvmsg_locked+0xa54/0x2490 net/ipv4/tcp.c:2396
Code: 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 70 18 00 00 48 8b 04 24 89 da 48 c7 c7 a0 b0 f4 8b 44 8b 44 24 30 8b 30 e8 ad 69 57 f8 90 <0f> 0b 90 90 e9 62 fa ff ff e8 7e 4b 91 f8 49 8d 5f 60 be 08 00 00
RSP: 0018:ffffc9000388f290 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000065ac515f RCX: ffffc90005961000
RDX: 0000000000040000 RSI: ffffffff814db216 RDI: 0000000000000001
RBP: ffff88801d1bf7a4 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff88801d1bf770 R14: 0000000000000001 R15: ffff88801d1bf798
FS:  00007f7c0fc1f6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb421f75198 CR3: 0000000037732000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 receive_fallback_to_copy+0x1d5/0x7a0 net/ipv4/tcp.c:1866
 tcp_zerocopy_receive+0x110b/0x2110 net/ipv4/tcp.c:2099
 do_tcp_getsockopt+0x1ae0/0x27b0 net/ipv4/tcp.c:4257
 tcp_getsockopt net/ipv4/tcp.c:4342 [inline]
 tcp_getsockopt+0xd1/0xf0 net/ipv4/tcp.c:4333
 do_sock_getsockopt+0x2e1/0x6c0 net/socket.c:2373
 __sys_getsockopt+0x1a3/0x270 net/socket.c:2402
 __do_sys_getsockopt net/socket.c:2412 [inline]
 __se_sys_getsockopt net/socket.c:2409 [inline]
 __x64_sys_getsockopt+0xbd/0x150 net/socket.c:2409
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f7c0ee7cae9
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:00007f7c0fc1f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007f7c0ef9bf80 RCX: 00007f7c0ee7cae9
RDX: 0000000000000023 RSI: 0000000000000006 RDI: 0000000000000003
RBP: 00007f7c0eec847a R08: 00000000200004c0 R09: 0000000000000000
R10: 0000000020000380 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f7c0ef9bf80 R15: 00007ffe5588b4b8
 </TASK>