* [syzbot] [smc?] general protection fault in __smc_diag_dump (4)
@ 2025-09-17 17:58 syzbot
2025-09-19 12:15 ` syzbot
2025-09-20 3:14 ` Wang Liang
0 siblings, 2 replies; 10+ messages in thread
From: syzbot @ 2025-09-17 17:58 UTC (permalink / raw)
To: alibuda, davem, dust.li, edumazet, guwen, horms, kuba,
linux-kernel, linux-rdma, linux-s390, mjambigi, netdev, pabeni,
sidraya, syzkaller-bugs, tonylu, wenjia
Hello,
syzbot found the following issue on:
HEAD commit: 5aca7966d2a7 Merge tag 'perf-tools-fixes-for-v6.17-2025-09..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=147e2e42580000
kernel config: https://syzkaller.appspot.com/x/.config?x=8f01d8629880e620
dashboard link: https://syzkaller.appspot.com/bug?extid=f775be4458668f7d220e
compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17aec534580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=115a9f62580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f191b2524020/disk-5aca7966.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5aa02ba0cba2/vmlinux-5aca7966.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b9b04ddba61b/bzImage-5aca7966.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f775be4458668f7d220e@syzkaller.appspotmail.com
Oops: general protection fault, probably for non-canonical address 0xfbd5a5d5a0000003: 0000 [#1] SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0xdead4ead00000018-0xdead4ead0000001f]
CPU: 1 UID: 0 PID: 6949 Comm: syz.0.335 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:44 [inline]
RIP: 0010:__smc_diag_dump.constprop.0+0x3ca/0x2550 net/smc/smc_diag.c:89
Code: 4c 8b b3 40 06 00 00 4d 85 f6 0f 84 f6 02 00 00 e8 6b 4f 78 f6 49 8d 7e 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f6 1e 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b
RSP: 0018:ffffc90003f2f1a8 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: ffff88802a33bd40 RCX: ffffffff897ee8a4
RDX: 1bd5a9d5a0000003 RSI: ffffffff8b434dd5 RDI: dead4ead00000018
RBP: ffff888032418000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000001 R11: 0000000000000000 R12: ffff8880754915f0
R13: ffff88805d823780 R14: dead4ead00000000 R15: ffff88802a33c380
FS: 00007fec5f7dd6c0(0000) GS:ffff8881247b2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fec5f7dcf98 CR3: 000000007d646000 CR4: 00000000003526f0
Call Trace:
<TASK>
smc_diag_dump_proto+0x26d/0x420 net/smc/smc_diag.c:217
smc_diag_dump+0x27/0x90 net/smc/smc_diag.c:234
netlink_dump+0x539/0xd30 net/netlink/af_netlink.c:2327
__netlink_dump_start+0x6d6/0x990 net/netlink/af_netlink.c:2442
netlink_dump_start include/linux/netlink.h:341 [inline]
smc_diag_handler_dump+0x1f9/0x240 net/smc/smc_diag.c:251
__sock_diag_cmd net/core/sock_diag.c:249 [inline]
sock_diag_rcv_msg+0x438/0x790 net/core/sock_diag.c:285
netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x5a7/0x870 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1896
sock_sendmsg_nosec net/socket.c:714 [inline]
__sock_sendmsg net/socket.c:729 [inline]
____sys_sendmsg+0xa95/0xc70 net/socket.c:2614
___sys_sendmsg+0x134/0x1d0 net/socket.c:2668
__sys_sendmsg+0x16d/0x220 net/socket.c:2700
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fec6018eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fec5f7dd038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fec603d6090 RCX: 00007fec6018eba9
RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000000000000003
RBP: 00007fec60211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fec603d6128 R14: 00007fec603d6090 R15: 00007ffcb0713c08
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:44 [inline]
RIP: 0010:__smc_diag_dump.constprop.0+0x3ca/0x2550 net/smc/smc_diag.c:89
Code: 4c 8b b3 40 06 00 00 4d 85 f6 0f 84 f6 02 00 00 e8 6b 4f 78 f6 49 8d 7e 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f6 1e 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b
RSP: 0018:ffffc90003f2f1a8 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: ffff88802a33bd40 RCX: ffffffff897ee8a4
RDX: 1bd5a9d5a0000003 RSI: ffffffff8b434dd5 RDI: dead4ead00000018
RBP: ffff888032418000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000001 R11: 0000000000000000 R12: ffff8880754915f0
R13: ffff88805d823780 R14: dead4ead00000000 R15: ffff88802a33c380
FS: 00007fec5f7dd6c0(0000) GS:ffff8881247b2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fec5f7dcf98 CR3: 000000007d646000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 4c 8b b3 40 06 00 00 mov 0x640(%rbx),%r14
7: 4d 85 f6 test %r14,%r14
a: 0f 84 f6 02 00 00 je 0x306
10: e8 6b 4f 78 f6 call 0xf6784f80
15: 49 8d 7e 18 lea 0x18(%r14),%rdi
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 f6 1e 00 00 jne 0x1f2a
34: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
3b: fc ff df
3e: 4d rex.WRB
3f: 8b .byte 0x8b
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [syzbot] [smc?] general protection fault in __smc_diag_dump (4)
2025-09-17 17:58 [syzbot] [smc?] general protection fault in __smc_diag_dump (4) syzbot
@ 2025-09-19 12:15 ` syzbot
2025-09-20 3:14 ` Wang Liang
1 sibling, 0 replies; 10+ messages in thread
From: syzbot @ 2025-09-19 12:15 UTC (permalink / raw)
To: aha310510, alibuda, davem, dust.li, edumazet, guwen, horms, jaka,
kuba, linux-kernel, linux-rdma, linux-s390, mjambigi, netdev,
pabeni, sidraya, syzkaller-bugs, tonylu, wenjia
syzbot has bisected this issue to:
commit 98d4435efcbf37801a3246fb53856c4b934a2613
Author: Jeongjun Park <aha310510@gmail.com>
Date: Thu Aug 29 03:56:48 2024 +0000
net/smc: prevent NULL pointer dereference in txopt_get
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=131dc712580000
start commit: 5aca7966d2a7 Merge tag 'perf-tools-fixes-for-v6.17-2025-09..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=109dc712580000
console output: https://syzkaller.appspot.com/x/log.txt?x=171dc712580000
kernel config: https://syzkaller.appspot.com/x/.config?x=8f01d8629880e620
dashboard link: https://syzkaller.appspot.com/bug?extid=f775be4458668f7d220e
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17aec534580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=115a9f62580000
Reported-by: syzbot+f775be4458668f7d220e@syzkaller.appspotmail.com
Fixes: 98d4435efcbf ("net/smc: prevent NULL pointer dereference in txopt_get")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [syzbot] [smc?] general protection fault in __smc_diag_dump (4)
2025-09-17 17:58 [syzbot] [smc?] general protection fault in __smc_diag_dump (4) syzbot
2025-09-19 12:15 ` syzbot
@ 2025-09-20 3:14 ` Wang Liang
2025-09-20 4:37 ` syzbot
1 sibling, 1 reply; 10+ messages in thread
From: Wang Liang @ 2025-09-20 3:14 UTC (permalink / raw)
To: syzbot, alibuda, davem, dust.li, edumazet, guwen, horms, kuba,
linux-kernel, linux-rdma, linux-s390, mjambigi, netdev, pabeni,
sidraya, syzkaller-bugs, tonylu, wenjia, zhangchangzhong,
yuehaibing
This issue is similar to:
https://lore.kernel.org/netdev/20250331081003.1503211-1-wangliang74@huawei.com/
The process like this:
(CPU1) | (CPU2)
---------------------------------|-------------------------------
inet_create() |
sk = sk_alloc() |
|
inet_init_csk_locks() |
modify smc->clcsock |
|
sk->sk_prot->init |
smc_inet_init_sock() |
smc_sk_init() |
smc_hash_sk() |
head = &smc_hash->ht; |
sk_add_node(sk, head); |
| smc_diag_dump_proto
| head = &smc_hash->ht;
| sk_for_each(sk, head)
| __smc_diag_dump()
| visit smc->clcsock
The 'smc->clcsock' is modified in inet_init_csk_locks():
__sock_create(family=2, type=1, protocol=256)
inet_create
sk = sk_alloc(...); // smc->clcsock = 0
inet_init_csk_locks(sk);
icsk = inet_csk(sk);
spin_lock_init(&icsk->icsk_accept_queue.rskq_lock); // smc->clcsock =
0xdead4ead00000000
The relevant structure is 'struct smc_sock' and 'struct
inet_connection_sock':
struct smc_sock {
union {
struct sock sk;
struct inet_sock icsk_inet;
};
struct socket *clcsock;
...
};
struct inet_connection_sock {
struct inet_sock icsk_inet;
struct request_sock_queue icsk_accept_queue;
...
};
Commit 60ada4fe644e ("smc: Fix various oops due to inet_sock type
confusion.")
add inet_sock as the first member of smc_sock. Maybe add
inet_connection_sock
instead of inet_sock is more appropriate.
#syz test
From 782467e7f55f2f1487744252060ffbaa992ee47a Mon Sep 17 00:00:00 2001
From: Wang Liang <wangliang74@huawei.com>
Date: Sat, 20 Sep 2025 11:29:52 +0800
Subject: [PATCH net] net/smc: fix general protection fault in
__smc_diag_dump
Use inet_connection_sock instead of inet_sock in struct smc_sock.
Signed-off-by: Wang Liang <wangliang74@huawei.com>
---
net/smc/smc.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/smc/smc.h b/net/smc/smc.h
index 2c9084963739..1b20f0c927d3 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -285,7 +285,7 @@ struct smc_connection {
struct smc_sock { /* smc sock container */
union {
struct sock sk;
- struct inet_sock icsk_inet;
+ struct inet_connection_sock inet_conn;
};
struct socket *clcsock; /* internal tcp socket */
void (*clcsk_state_change)(struct sock *sk);
--
2.34.1
在 2025/9/18 1:58, syzbot 写道:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 5aca7966d2a7 Merge tag 'perf-tools-fixes-for-v6.17-2025-09..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=147e2e42580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=8f01d8629880e620
> dashboard link: https://syzkaller.appspot.com/bug?extid=f775be4458668f7d220e
> compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17aec534580000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=115a9f62580000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/f191b2524020/disk-5aca7966.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/5aa02ba0cba2/vmlinux-5aca7966.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/b9b04ddba61b/bzImage-5aca7966.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+f775be4458668f7d220e@syzkaller.appspotmail.com
>
> Oops: general protection fault, probably for non-canonical address 0xfbd5a5d5a0000003: 0000 [#1] SMP KASAN NOPTI
> KASAN: maybe wild-memory-access in range [0xdead4ead00000018-0xdead4ead0000001f]
> CPU: 1 UID: 0 PID: 6949 Comm: syz.0.335 Not tainted syzkaller #0 PREEMPT(full)
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
> RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:44 [inline]
> RIP: 0010:__smc_diag_dump.constprop.0+0x3ca/0x2550 net/smc/smc_diag.c:89
> Code: 4c 8b b3 40 06 00 00 4d 85 f6 0f 84 f6 02 00 00 e8 6b 4f 78 f6 49 8d 7e 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f6 1e 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b
> RSP: 0018:ffffc90003f2f1a8 EFLAGS: 00010a06
> RAX: dffffc0000000000 RBX: ffff88802a33bd40 RCX: ffffffff897ee8a4
> RDX: 1bd5a9d5a0000003 RSI: ffffffff8b434dd5 RDI: dead4ead00000018
> RBP: ffff888032418000 R08: 0000000000000005 R09: 0000000000000000
> R10: 0000000080000001 R11: 0000000000000000 R12: ffff8880754915f0
> R13: ffff88805d823780 R14: dead4ead00000000 R15: ffff88802a33c380
> FS: 00007fec5f7dd6c0(0000) GS:ffff8881247b2000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007fec5f7dcf98 CR3: 000000007d646000 CR4: 00000000003526f0
> Call Trace:
> <TASK>
> smc_diag_dump_proto+0x26d/0x420 net/smc/smc_diag.c:217
> smc_diag_dump+0x27/0x90 net/smc/smc_diag.c:234
> netlink_dump+0x539/0xd30 net/netlink/af_netlink.c:2327
> __netlink_dump_start+0x6d6/0x990 net/netlink/af_netlink.c:2442
> netlink_dump_start include/linux/netlink.h:341 [inline]
> smc_diag_handler_dump+0x1f9/0x240 net/smc/smc_diag.c:251
> __sock_diag_cmd net/core/sock_diag.c:249 [inline]
> sock_diag_rcv_msg+0x438/0x790 net/core/sock_diag.c:285
> netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552
> netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
> netlink_unicast+0x5a7/0x870 net/netlink/af_netlink.c:1346
> netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1896
> sock_sendmsg_nosec net/socket.c:714 [inline]
> __sock_sendmsg net/socket.c:729 [inline]
> ____sys_sendmsg+0xa95/0xc70 net/socket.c:2614
> ___sys_sendmsg+0x134/0x1d0 net/socket.c:2668
> __sys_sendmsg+0x16d/0x220 net/socket.c:2700
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fec6018eba9
> Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
> RSP: 002b:00007fec5f7dd038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
> RAX: ffffffffffffffda RBX: 00007fec603d6090 RCX: 00007fec6018eba9
> RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000000000000003
> RBP: 00007fec60211e19 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
> R13: 00007fec603d6128 R14: 00007fec603d6090 R15: 00007ffcb0713c08
> </TASK>
> Modules linked in:
> ---[ end trace 0000000000000000 ]---
> RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:44 [inline]
> RIP: 0010:__smc_diag_dump.constprop.0+0x3ca/0x2550 net/smc/smc_diag.c:89
> Code: 4c 8b b3 40 06 00 00 4d 85 f6 0f 84 f6 02 00 00 e8 6b 4f 78 f6 49 8d 7e 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f6 1e 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b
> RSP: 0018:ffffc90003f2f1a8 EFLAGS: 00010a06
> RAX: dffffc0000000000 RBX: ffff88802a33bd40 RCX: ffffffff897ee8a4
> RDX: 1bd5a9d5a0000003 RSI: ffffffff8b434dd5 RDI: dead4ead00000018
> RBP: ffff888032418000 R08: 0000000000000005 R09: 0000000000000000
> R10: 0000000080000001 R11: 0000000000000000 R12: ffff8880754915f0
> R13: ffff88805d823780 R14: dead4ead00000000 R15: ffff88802a33c380
> FS: 00007fec5f7dd6c0(0000) GS:ffff8881247b2000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007fec5f7dcf98 CR3: 000000007d646000 CR4: 00000000003526f0
> ----------------
> Code disassembly (best guess):
> 0: 4c 8b b3 40 06 00 00 mov 0x640(%rbx),%r14
> 7: 4d 85 f6 test %r14,%r14
> a: 0f 84 f6 02 00 00 je 0x306
> 10: e8 6b 4f 78 f6 call 0xf6784f80
> 15: 49 8d 7e 18 lea 0x18(%r14),%rdi
> 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
> 20: fc ff df
> 23: 48 89 fa mov %rdi,%rdx
> 26: 48 c1 ea 03 shr $0x3,%rdx
> * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
> 2e: 0f 85 f6 1e 00 00 jne 0x1f2a
> 34: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
> 3b: fc ff df
> 3e: 4d rex.WRB
> 3f: 8b .byte 0x8b
>
>
> ---
> This report is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@googlegroups.com.
>
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
>
> If the report is already addressed, let syzbot know by replying with:
> #syz fix: exact-commit-title
>
> If you want syzbot to run the reproducer, reply with:
> #syz test: git://repo/address.git branch-or-commit-hash
> If you attach or paste a git patch, syzbot will apply it before testing.
>
> If you want to overwrite report's subsystems, reply with:
> #syz set subsystems: new-subsystem
> (See the list of subsystem names on the web dashboard)
>
> If the report is a duplicate of another one, reply with:
> #syz dup: exact-subject-of-another-report
>
> If you want to undo deduplication, reply with:
> #syz undup
>
>
^ permalink raw reply related [flat|nested] 10+ messages in thread* Re: [syzbot] [smc?] general protection fault in __smc_diag_dump (4)
2025-09-20 3:14 ` Wang Liang
@ 2025-09-20 4:37 ` syzbot
0 siblings, 0 replies; 10+ messages in thread
From: syzbot @ 2025-09-20 4:37 UTC (permalink / raw)
To: alibuda, davem, dust.li, edumazet, guwen, horms, kuba,
linux-kernel, linux-rdma, linux-s390, mjambigi, netdev, pabeni,
sidraya, syzkaller-bugs, tonylu, wangliang74, wenjia, yuehaibing,
zhangchangzhong
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
failed to apply patch:
checking file net/smc/smc.h
Hunk #1 FAILED at 285.
1 out of 1 hunk FAILED
Tested on:
commit: cd89d487 Merge tag '6.17-rc6-smb3-client-fixes' of git..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=8f01d8629880e620
dashboard link: https://syzkaller.appspot.com/bug?extid=f775be4458668f7d220e
compiler:
patch: https://syzkaller.appspot.com/x/patch.diff?x=1381a0e2580000
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [syzbot] [smc?] general protection fault in __smc_diag_dump (4)
@ 2025-09-20 6:48 Wang Liang
2025-09-20 6:52 ` syzbot
0 siblings, 1 reply; 10+ messages in thread
From: Wang Liang @ 2025-09-20 6:48 UTC (permalink / raw)
To: syzbot+f775be4458668f7d220e
Cc: syzkaller-bugs, linux-rdma, netdev, linux-kernel
#syz test
diff --git a/net/smc/smc.h b/net/smc/smc.h
index 2c9084963739..1b20f0c927d3 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -285,7 +285,7 @@ struct smc_connection {
struct smc_sock { /* smc sock container */
union {
struct sock sk;
- struct inet_sock icsk_inet;
+ struct inet_connection_sock inet_conn;
};
struct socket *clcsock; /* internal tcp socket */
void (*clcsk_state_change)(struct sock *sk);
--
2.34.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* Re: [syzbot] [smc?] general protection fault in __smc_diag_dump (4)
@ 2025-10-17 6:48 Wang Liang
2025-10-17 7:40 ` Wang Liang
0 siblings, 1 reply; 10+ messages in thread
From: Wang Liang @ 2025-10-17 6:48 UTC (permalink / raw)
To: syzbot+f775be4458668f7d220e
Cc: linux-kernel, netdev, linux-rdma, syzkaller-bugs
diff --git a/net/smc/smc_inet.c b/net/smc/smc_inet.c
index a944e7dcb8b9..a94084b4a498 100644
--- a/net/smc/smc_inet.c
+++ b/net/smc/smc_inet.c
@@ -56,7 +56,6 @@ static struct inet_protosw smc_inet_protosw = {
.protocol = IPPROTO_SMC,
.prot = &smc_inet_prot,
.ops = &smc_inet_stream_ops,
- .flags = INET_PROTOSW_ICSK,
};
#if IS_ENABLED(CONFIG_IPV6)
@@ -104,27 +103,15 @@ static struct inet_protosw smc_inet6_protosw = {
.protocol = IPPROTO_SMC,
.prot = &smc_inet6_prot,
.ops = &smc_inet6_stream_ops,
- .flags = INET_PROTOSW_ICSK,
};
#endif /* CONFIG_IPV6 */
-static unsigned int smc_sync_mss(struct sock *sk, u32 pmtu)
-{
- /* No need pass it through to clcsock, mss can always be set by
- * sock_create_kern or smc_setsockopt.
- */
- return 0;
-}
-
static int smc_inet_init_sock(struct sock *sk)
{
struct net *net = sock_net(sk);
/* init common smc sock */
smc_sk_init(net, sk, IPPROTO_SMC);
-
- inet_csk(sk)->icsk_sync_mss = smc_sync_mss;
-
/* create clcsock */
return smc_create_clcsk(net, sk, sk->sk_family);
}
--
2.34.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* Re: [syzbot] [smc?] general protection fault in __smc_diag_dump (4)
2025-10-17 6:48 Wang Liang
@ 2025-10-17 7:40 ` Wang Liang
0 siblings, 0 replies; 10+ messages in thread
From: Wang Liang @ 2025-10-17 7:40 UTC (permalink / raw)
To: syzbot+f775be4458668f7d220e
Cc: linux-kernel, netdev, linux-rdma, syzkaller-bugs
Sorry, this is an incorrect email, please ignore it.
在 2025/10/17 14:48, Wang Liang 写道:
> diff --git a/net/smc/smc_inet.c b/net/smc/smc_inet.c
> index a944e7dcb8b9..a94084b4a498 100644
> --- a/net/smc/smc_inet.c
> +++ b/net/smc/smc_inet.c
> @@ -56,7 +56,6 @@ static struct inet_protosw smc_inet_protosw = {
> .protocol = IPPROTO_SMC,
> .prot = &smc_inet_prot,
> .ops = &smc_inet_stream_ops,
> - .flags = INET_PROTOSW_ICSK,
> };
>
> #if IS_ENABLED(CONFIG_IPV6)
> @@ -104,27 +103,15 @@ static struct inet_protosw smc_inet6_protosw = {
> .protocol = IPPROTO_SMC,
> .prot = &smc_inet6_prot,
> .ops = &smc_inet6_stream_ops,
> - .flags = INET_PROTOSW_ICSK,
> };
> #endif /* CONFIG_IPV6 */
>
> -static unsigned int smc_sync_mss(struct sock *sk, u32 pmtu)
> -{
> - /* No need pass it through to clcsock, mss can always be set by
> - * sock_create_kern or smc_setsockopt.
> - */
> - return 0;
> -}
> -
> static int smc_inet_init_sock(struct sock *sk)
> {
> struct net *net = sock_net(sk);
>
> /* init common smc sock */
> smc_sk_init(net, sk, IPPROTO_SMC);
> -
> - inet_csk(sk)->icsk_sync_mss = smc_sync_mss;
> -
> /* create clcsock */
> return smc_create_clcsk(net, sk, sk->sk_family);
> }
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [syzbot] [smc?] general protection fault in __smc_diag_dump (4)
@ 2025-10-17 6:50 Wang Liang
2025-10-17 7:22 ` syzbot
0 siblings, 1 reply; 10+ messages in thread
From: Wang Liang @ 2025-10-17 6:50 UTC (permalink / raw)
To: syzbot+f775be4458668f7d220e
Cc: linux-kernel, netdev, linux-rdma, syzkaller-bugs
#syz test
diff --git a/net/smc/smc_inet.c b/net/smc/smc_inet.c
index a944e7dcb8b9..a94084b4a498 100644
--- a/net/smc/smc_inet.c
+++ b/net/smc/smc_inet.c
@@ -56,7 +56,6 @@ static struct inet_protosw smc_inet_protosw = {
.protocol = IPPROTO_SMC,
.prot = &smc_inet_prot,
.ops = &smc_inet_stream_ops,
- .flags = INET_PROTOSW_ICSK,
};
#if IS_ENABLED(CONFIG_IPV6)
@@ -104,27 +103,15 @@ static struct inet_protosw smc_inet6_protosw = {
.protocol = IPPROTO_SMC,
.prot = &smc_inet6_prot,
.ops = &smc_inet6_stream_ops,
- .flags = INET_PROTOSW_ICSK,
};
#endif /* CONFIG_IPV6 */
-static unsigned int smc_sync_mss(struct sock *sk, u32 pmtu)
-{
- /* No need pass it through to clcsock, mss can always be set by
- * sock_create_kern or smc_setsockopt.
- */
- return 0;
-}
-
static int smc_inet_init_sock(struct sock *sk)
{
struct net *net = sock_net(sk);
/* init common smc sock */
smc_sk_init(net, sk, IPPROTO_SMC);
-
- inet_csk(sk)->icsk_sync_mss = smc_sync_mss;
-
/* create clcsock */
return smc_create_clcsk(net, sk, sk->sk_family);
}
--
2.34.1
^ permalink raw reply related [flat|nested] 10+ messages in thread
end of thread, other threads:[~2025-10-17 7:40 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
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2025-09-17 17:58 [syzbot] [smc?] general protection fault in __smc_diag_dump (4) syzbot
2025-09-19 12:15 ` syzbot
2025-09-20 3:14 ` Wang Liang
2025-09-20 4:37 ` syzbot
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2025-09-20 6:48 Wang Liang
2025-09-20 6:52 ` syzbot
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2025-10-17 6:50 Wang Liang
2025-10-17 7:22 ` syzbot
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