* [syzbot] [net?] WARNING in xfrm_state_fini (4)
@ 2025-10-12 21:35 syzbot
2025-10-13 22:45 ` Eric Dumazet
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: syzbot @ 2025-10-12 21:35 UTC (permalink / raw)
To: davem, edumazet, herbert, horms, kuba, linux-kernel, netdev,
pabeni, steffen.klassert, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: ffce84bccb4d Merge branch 'bpf-avoid-rcu-context-warning-w..
git tree: bpf
console output: https://syzkaller.appspot.com/x/log.txt?x=112559e2580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1e0e0bf7e51565cd
dashboard link: https://syzkaller.appspot.com/bug?extid=999eb23467f83f9bf9bf
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1514d304580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/cd489c5f530a/disk-ffce84bc.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/e4a06e8e5022/vmlinux-ffce84bc.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c1111b7581ab/bzImage-ffce84bc.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+999eb23467f83f9bf9bf@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 1 PID: 36 at net/xfrm/xfrm_state.c:3306 xfrm_state_fini+0x26d/0x2f0 net/xfrm/xfrm_state.c:3306
Modules linked in:
CPU: 1 UID: 0 PID: 36 Comm: kworker/u8:2 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: netns cleanup_net
RIP: 0010:xfrm_state_fini+0x26d/0x2f0 net/xfrm/xfrm_state.c:3306
Code: c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 4b f0 36 f8 48 8b 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 99 e1 16 f8 e8 64 4d d1 f7 90 <0f> 0b 90 e9 fd fd ff ff e8 56 4d d1 f7 90 0f 0b 90 e9 60 fe ff ff
RSP: 0018:ffffc90000ac7878 EFLAGS: 00010293
RAX: ffffffff89edd6ec RBX: ffff888058e08000 RCX: ffff88801ce99e40
RDX: 0000000000000000 RSI: ffffffff8d9cc7ae RDI: ffff88801ce99e40
RBP: ffffc90000ac7990 R08: ffffffff8f9db437 R09: 1ffffffff1f3b686
R10: dffffc0000000000 R11: fffffbfff1f3b687 R12: ffffffff8f5d4bc0
R13: 1ffff92000158f3c R14: ffff888058e094c0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125e27000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff78efa6b0 CR3: 000000007788c000 CR4: 00000000003526f0
Call Trace:
<TASK>
xfrm_net_exit+0x2d/0x70 net/xfrm/xfrm_policy.c:4354
ops_exit_list net/core/net_namespace.c:199 [inline]
ops_undo_list+0x497/0x990 net/core/net_namespace.c:252
cleanup_net+0x4d8/0x820 net/core/net_namespace.c:695
process_one_work kernel/workqueue.c:3263 [inline]
process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3346
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
kthread+0x70e/0x8a0 kernel/kthread.c:463
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
---
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] 6+ messages in thread
* Re: [syzbot] [net?] WARNING in xfrm_state_fini (4)
2025-10-12 21:35 [syzbot] [net?] WARNING in xfrm_state_fini (4) syzbot
@ 2025-10-13 22:45 ` Eric Dumazet
2025-10-13 23:08 ` syzbot
2025-10-20 1:04 ` syzbot
2025-10-24 22:01 ` syzbot
2 siblings, 1 reply; 6+ messages in thread
From: Eric Dumazet @ 2025-10-13 22:45 UTC (permalink / raw)
To: syzbot
Cc: davem, herbert, horms, kuba, linux-kernel, netdev, pabeni,
steffen.klassert, syzkaller-bugs
On Sun, Oct 12, 2025 at 2:35 PM syzbot
<syzbot+999eb23467f83f9bf9bf@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: ffce84bccb4d Merge branch 'bpf-avoid-rcu-context-warning-w..
> git tree: bpf
> console output: https://syzkaller.appspot.com/x/log.txt?x=112559e2580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=1e0e0bf7e51565cd
> dashboard link: https://syzkaller.appspot.com/bug?extid=999eb23467f83f9bf9bf
> compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1514d304580000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/cd489c5f530a/disk-ffce84bc.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/e4a06e8e5022/vmlinux-ffce84bc.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/c1111b7581ab/bzImage-ffce84bc.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+999eb23467f83f9bf9bf@syzkaller.appspotmail.com
>
> ------------[ cut here ]------------
> WARNING: CPU: 1 PID: 36 at net/xfrm/xfrm_state.c:3306 xfrm_state_fini+0x26d/0x2f0 net/xfrm/xfrm_state.c:3306
> Modules linked in:
> CPU: 1 UID: 0 PID: 36 Comm: kworker/u8:2 Not tainted syzkaller #0 PREEMPT(full)
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
> Workqueue: netns cleanup_net
> RIP: 0010:xfrm_state_fini+0x26d/0x2f0 net/xfrm/xfrm_state.c:3306
> Code: c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 4b f0 36 f8 48 8b 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 99 e1 16 f8 e8 64 4d d1 f7 90 <0f> 0b 90 e9 fd fd ff ff e8 56 4d d1 f7 90 0f 0b 90 e9 60 fe ff ff
> RSP: 0018:ffffc90000ac7878 EFLAGS: 00010293
> RAX: ffffffff89edd6ec RBX: ffff888058e08000 RCX: ffff88801ce99e40
> RDX: 0000000000000000 RSI: ffffffff8d9cc7ae RDI: ffff88801ce99e40
> RBP: ffffc90000ac7990 R08: ffffffff8f9db437 R09: 1ffffffff1f3b686
> R10: dffffc0000000000 R11: fffffbfff1f3b687 R12: ffffffff8f5d4bc0
> R13: 1ffff92000158f3c R14: ffff888058e094c0 R15: dffffc0000000000
> FS: 0000000000000000(0000) GS:ffff888125e27000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007eff78efa6b0 CR3: 000000007788c000 CR4: 00000000003526f0
> Call Trace:
> <TASK>
> xfrm_net_exit+0x2d/0x70 net/xfrm/xfrm_policy.c:4354
> ops_exit_list net/core/net_namespace.c:199 [inline]
> ops_undo_list+0x497/0x990 net/core/net_namespace.c:252
> cleanup_net+0x4d8/0x820 net/core/net_namespace.c:695
> process_one_work kernel/workqueue.c:3263 [inline]
> process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3346
> worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
> kthread+0x70e/0x8a0 kernel/kthread.c:463
> ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:148
> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
> </TASK>
>
>
> ---
> 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
#syz test
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 95241093b7f0..17240503a366 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1744,6 +1744,8 @@ int __udp_enqueue_schedule_skb(struct sock *sk,
struct sk_buff *skb)
atomic_add(size, &udp_prod_queue->rmem_alloc);
+ secpath_reset(skb);
+
if (!llist_add(&skb->ll_node, &udp_prod_queue->ll_root))
return 0;
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [syzbot] [net?] WARNING in xfrm_state_fini (4)
2025-10-13 22:45 ` Eric Dumazet
@ 2025-10-13 23:08 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2025-10-13 23:08 UTC (permalink / raw)
To: davem, edumazet, herbert, horms, kuba, linux-kernel, netdev,
pabeni, steffen.klassert, syzkaller-bugs
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
failed to apply patch:
checking file net/ipv4/udp.c
patch: **** unexpected end of file in patch
Tested on:
commit: 3a866087 Linux 6.18-rc1
git tree: bpf
kernel config: https://syzkaller.appspot.com/x/.config?x=9ad7b090a18654a7
dashboard link: https://syzkaller.appspot.com/bug?extid=999eb23467f83f9bf9bf
compiler:
patch: https://syzkaller.appspot.com/x/patch.diff?x=11a479e2580000
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [net?] WARNING in xfrm_state_fini (4)
2025-10-12 21:35 [syzbot] [net?] WARNING in xfrm_state_fini (4) syzbot
2025-10-13 22:45 ` Eric Dumazet
@ 2025-10-20 1:04 ` syzbot
2025-10-24 22:01 ` syzbot
2 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2025-10-20 1:04 UTC (permalink / raw)
To: davem, dsahern, edumazet, herbert, horms, kuba, linux-kernel,
netdev, pabeni, sd, steffen.klassert, syzkaller-bugs
syzbot has bisected this issue to:
commit b441cf3f8c4b8576639d20c8eb4aa32917602ecd
Author: Sabrina Dubroca <sd@queasysnail.net>
Date: Fri Jul 4 14:54:33 2025 +0000
xfrm: delete x->tunnel as we delete x
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14b49734580000
start commit: 0b4b77eff5f8 doc: fix seg6_flowlabel path
git tree: net
final oops: https://syzkaller.appspot.com/x/report.txt?x=16b49734580000
console output: https://syzkaller.appspot.com/x/log.txt?x=12b49734580000
kernel config: https://syzkaller.appspot.com/x/.config?x=61ab7fa743df0ec1
dashboard link: https://syzkaller.appspot.com/bug?extid=999eb23467f83f9bf9bf
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12cc05e2580000
Reported-by: syzbot+999eb23467f83f9bf9bf@syzkaller.appspotmail.com
Fixes: b441cf3f8c4b ("xfrm: delete x->tunnel as we delete x")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [net?] WARNING in xfrm_state_fini (4)
2025-10-20 11:25 [PATCH net] " Wang Liang
@ 2025-10-20 12:26 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2025-10-20 12:26 UTC (permalink / raw)
To: davem, edumazet, herbert, horms, kuba, linux-kernel, netdev,
pabeni, steffen.klassert, syzkaller-bugs, wangliang74, yuehaibing,
zhangchangzhong
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-by: syzbot+999eb23467f83f9bf9bf@syzkaller.appspotmail.com
Tested-by: syzbot+999eb23467f83f9bf9bf@syzkaller.appspotmail.com
Tested on:
commit: ffff5c8f net: phy: realtek: fix rtl8221b-vm-cg name
git tree: net
console output: https://syzkaller.appspot.com/x/log.txt?x=11573c58580000
kernel config: https://syzkaller.appspot.com/x/.config?x=9ad7b090a18654a7
dashboard link: https://syzkaller.appspot.com/bug?extid=999eb23467f83f9bf9bf
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=15159734580000
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [net?] WARNING in xfrm_state_fini (4)
2025-10-12 21:35 [syzbot] [net?] WARNING in xfrm_state_fini (4) syzbot
2025-10-13 22:45 ` Eric Dumazet
2025-10-20 1:04 ` syzbot
@ 2025-10-24 22:01 ` syzbot
2 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2025-10-24 22:01 UTC (permalink / raw)
To: davem, dsahern, edumazet, herbert, horms, kuba, linux-kernel,
netdev, pabeni, sd, steffen.klassert, syzkaller-bugs, wangliang74,
yuehaibing, zhangchangzhong
syzbot has found a reproducer for the following issue on:
HEAD commit: 8ce93aabbf75 bpf: Conditionally include dynptr copy kfuncs
git tree: bpf
console output: https://syzkaller.appspot.com/x/log.txt?x=126853e2580000
kernel config: https://syzkaller.appspot.com/x/.config?x=67b63a24f3c26fca
dashboard link: https://syzkaller.appspot.com/bug?extid=999eb23467f83f9bf9bf
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14218be2580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17104258580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/4a42c2608bb7/disk-8ce93aab.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/84ea41a9a1bb/vmlinux-8ce93aab.xz
kernel image: https://storage.googleapis.com/syzbot-assets/94fb843154da/bzImage-8ce93aab.xz
The issue was bisected to:
commit b441cf3f8c4b8576639d20c8eb4aa32917602ecd
Author: Sabrina Dubroca <sd@queasysnail.net>
Date: Fri Jul 4 14:54:33 2025 +0000
xfrm: delete x->tunnel as we delete x
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14b49734580000
final oops: https://syzkaller.appspot.com/x/report.txt?x=16b49734580000
console output: https://syzkaller.appspot.com/x/log.txt?x=12b49734580000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+999eb23467f83f9bf9bf@syzkaller.appspotmail.com
Fixes: b441cf3f8c4b ("xfrm: delete x->tunnel as we delete x")
------------[ cut here ]------------
WARNING: CPU: 0 PID: 36 at net/xfrm/xfrm_state.c:3306 xfrm_state_fini+0x26d/0x2f0 net/xfrm/xfrm_state.c:3306
Modules linked in:
CPU: 0 UID: 0 PID: 36 Comm: kworker/u8:2 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: netns cleanup_net
RIP: 0010:xfrm_state_fini+0x26d/0x2f0 net/xfrm/xfrm_state.c:3306
Code: c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 bb ca 3a f8 48 8b 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 09 b8 1a f8 e8 84 15 d5 f7 90 <0f> 0b 90 e9 fd fd ff ff e8 76 15 d5 f7 90 0f 0b 90 e9 60 fe ff ff
RSP: 0018:ffffc90000ac7878 EFLAGS: 00010293
RAX: ffffffff89eaee7c RBX: ffff888027f82480 RCX: ffff888143ab9e40
RDX: 0000000000000000 RSI: ffffffff8d70bc9a RDI: ffffffff8bbf0460
RBP: ffffc90000ac7990 R08: ffffffff8f7cd477 R09: 1ffffffff1ef9a8e
R10: dffffc0000000000 R11: fffffbfff1ef9a8f R12: ffffffff8f3c6100
R13: 1ffff92000158f3c R14: ffff888027f83940 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff88812613e000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa946164f98 CR3: 0000000030606000 CR4: 00000000003526f0
Call Trace:
<TASK>
xfrm_net_exit+0x2d/0x70 net/xfrm/xfrm_policy.c:4354
ops_exit_list net/core/net_namespace.c:199 [inline]
ops_undo_list+0x49a/0x990 net/core/net_namespace.c:252
cleanup_net+0x4d8/0x820 net/core/net_namespace.c:695
process_one_work kernel/workqueue.c:3263 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
---
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.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2025-10-24 22:01 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-10-12 21:35 [syzbot] [net?] WARNING in xfrm_state_fini (4) syzbot
2025-10-13 22:45 ` Eric Dumazet
2025-10-13 23:08 ` syzbot
2025-10-20 1:04 ` syzbot
2025-10-24 22:01 ` syzbot
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2025-10-20 11:25 [PATCH net] " Wang Liang
2025-10-20 12:26 ` syzbot
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