[syzbot] [fs?] WARNING in destroy_super_work
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syzbot
2:31 AM (5 hours ago) 2:31 AM
to Liam.H...@oracle.com, ak...@linux-foundation.org, anna-...@linutronix.de, b...@vger.kernel.org, bra...@kernel.org, bse...@google.com, cgr...@vger.kernel.org, da...@redhat.com, dietmar....@arm.com, fred...@kernel.org, han...@cmpxchg.org, ja...@suse.cz, jsa...@redhat.com, juri....@redhat.com, ke...@kernel.org, linux-...@vger.kernel.org, linux-...@vger.kernel.org, linu...@kvack.org, linux-secu...@vger.kernel.org, lorenzo...@oracle.com, mgo...@suse.de, mho...@suse.com, mi...@redhat.com, mjg...@gmail.com, mko...@suse.com, ol...@redhat.com, pa...@paul-moore.com, pet...@infradead.org, ros...@goodmis.org, rp...@kernel.org, ser...@kernel.org, sur...@google.com, syzkall...@googlegroups.com, tg...@linutronix.de, t...@kernel.org, vba...@suse.cz, vincent...@linaro.org, vi...@zeniv.linux.org.uk, vsch...@redhat.com
Hello,
syzbot found the following issue on:
HEAD commit: 982312090977 Add linux-next specific files for 20251103
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=17b2932f980000
kernel config: https://syzkaller.appspot.com/x/.config?x=43cc0e31558cb527
dashboard link: https://syzkaller.appspot.com/bug?extid=1957b26299cf3ff7890c
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=1347817c580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/40058f8a830c/disk-98231209.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1d7f42e8639f/vmlinux-98231209.xz
kernel image: https://storage.googleapis.com/syzbot-assets/d8bb0284f393/bzImage-98231209.xz
The issue was bisected to:
commit 3c9820d5c64aeaadea7ffe3a6bb99d019a5ff46a
Author: Christian Brauner <bra...@kernel.org>
Date: Wed Oct 29 12:20:24 2025 +0000
ns: add active reference count
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=101e9bcd980000
final oops: https://syzkaller.appspot.com/x/report.txt?x=121e9bcd980000
console output: https://syzkaller.appspot.com/x/log.txt?x=141e9bcd980000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1957b2...@syzkaller.appspotmail.com
Fixes: 3c9820d5c64a ("ns: add active reference count")
------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:229 at __ns_ref_put include/linux/ns_common.h:229 [inline], CPU#0: kworker/0:6/6108
WARNING: ./include/linux/ns_common.h:229 at put_user_ns include/linux/user_namespace.h:189 [inline], CPU#0: kworker/0:6/6108
WARNING: ./include/linux/ns_common.h:229 at destroy_super_work+0x15c/0x1a0 fs/super.c:280, CPU#0: kworker/0:6/6108
Modules linked in:
CPU: 0 UID: 0 PID: 6108 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: events destroy_super_work
RIP: 0010:__ns_ref_put include/linux/ns_common.h:229 [inline]
RIP: 0010:put_user_ns include/linux/user_namespace.h:189 [inline]
RIP: 0010:destroy_super_work+0x15c/0x1a0 fs/super.c:280
Code: 90 63 ff 48 81 c3 a8 fc ff ff 48 89 df e8 ec 90 63 ff 4c 89 f7 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8a 91 e1 ff e8 45 df 86 ff 90 <0f> 0b 90 e9 6d ff ff ff e8 37 df 86 ff 4c 89 e7 be 03 00 00 00 e8
RSP: 0018:ffffc900030d7a48 EFLAGS: 00010293
RAX: ffffffff823a294b RBX: ffff88805639c898 RCX: ffff88802ab59e80
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000
RBP: 0000000000000004 R08: ffff88807477565b R09: 1ffff1100e8eeacb
R10: dffffc0000000000 R11: ffffed100e8eeacc R12: ffff888074775658
R13: dffffc0000000000 R14: ffff88805639c000 R15: ffff8880747754c8
FS: 0000000000000000(0000) GS:ffff888125eda000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c008044000 CR3: 0000000077ad4000 CR4: 00000000003526f0
Call Trace:
<TASK>
process_one_work+0x94a/0x15d0 kernel/workqueue.c:3267
process_scheduled_works kernel/workqueue.c:3350 [inline]
worker_thread+0x9b0/0xee0 kernel/workqueue.c:3431
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x52d/0xa70 arch/x86/kernel/process.c:158
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 syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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
syzbot found the following issue on:
HEAD commit: 982312090977 Add linux-next specific files for 20251103
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=17b2932f980000
kernel config: https://syzkaller.appspot.com/x/.config?x=43cc0e31558cb527
dashboard link: https://syzkaller.appspot.com/bug?extid=1957b26299cf3ff7890c
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=1347817c580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/40058f8a830c/disk-98231209.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1d7f42e8639f/vmlinux-98231209.xz
kernel image: https://storage.googleapis.com/syzbot-assets/d8bb0284f393/bzImage-98231209.xz
The issue was bisected to:
commit 3c9820d5c64aeaadea7ffe3a6bb99d019a5ff46a
Author: Christian Brauner <bra...@kernel.org>
Date: Wed Oct 29 12:20:24 2025 +0000
ns: add active reference count
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=101e9bcd980000
final oops: https://syzkaller.appspot.com/x/report.txt?x=121e9bcd980000
console output: https://syzkaller.appspot.com/x/log.txt?x=141e9bcd980000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1957b2...@syzkaller.appspotmail.com
Fixes: 3c9820d5c64a ("ns: add active reference count")
------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:229 at __ns_ref_put include/linux/ns_common.h:229 [inline], CPU#0: kworker/0:6/6108
WARNING: ./include/linux/ns_common.h:229 at put_user_ns include/linux/user_namespace.h:189 [inline], CPU#0: kworker/0:6/6108
WARNING: ./include/linux/ns_common.h:229 at destroy_super_work+0x15c/0x1a0 fs/super.c:280, CPU#0: kworker/0:6/6108
Modules linked in:
CPU: 0 UID: 0 PID: 6108 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: events destroy_super_work
RIP: 0010:__ns_ref_put include/linux/ns_common.h:229 [inline]
RIP: 0010:put_user_ns include/linux/user_namespace.h:189 [inline]
RIP: 0010:destroy_super_work+0x15c/0x1a0 fs/super.c:280
Code: 90 63 ff 48 81 c3 a8 fc ff ff 48 89 df e8 ec 90 63 ff 4c 89 f7 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8a 91 e1 ff e8 45 df 86 ff 90 <0f> 0b 90 e9 6d ff ff ff e8 37 df 86 ff 4c 89 e7 be 03 00 00 00 e8
RSP: 0018:ffffc900030d7a48 EFLAGS: 00010293
RAX: ffffffff823a294b RBX: ffff88805639c898 RCX: ffff88802ab59e80
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000
RBP: 0000000000000004 R08: ffff88807477565b R09: 1ffff1100e8eeacb
R10: dffffc0000000000 R11: ffffed100e8eeacc R12: ffff888074775658
R13: dffffc0000000000 R14: ffff88805639c000 R15: ffff8880747754c8
FS: 0000000000000000(0000) GS:ffff888125eda000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c008044000 CR3: 0000000077ad4000 CR4: 00000000003526f0
Call Trace:
<TASK>
process_one_work+0x94a/0x15d0 kernel/workqueue.c:3267
process_scheduled_works kernel/workqueue.c:3350 [inline]
worker_thread+0x9b0/0xee0 kernel/workqueue.c:3431
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x52d/0xa70 arch/x86/kernel/process.c:158
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 syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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
Hillf Danton
3:54 AM (4 hours ago) 3:54 AM
to syzbot, linux-...@vger.kernel.org, syzkall...@googlegroups.com
> Date: Thu, 06 Nov 2025 23:31:27 -0800
--- x/kernel/nscommon.c
+++ y/kernel/nscommon.c
@@ -117,9 +117,7 @@ struct ns_common *__must_check ns_owner(
void __ns_ref_active_get_owner(struct ns_common *ns)
{
- ns = ns_owner(ns);
- if (ns)
- WARN_ON_ONCE(atomic_add_negative(1, &ns->__ns_ref_active));
+ __ns_ref_active_resurrect(ns);
}
/*
--
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 982312090977 Add linux-next specific files for 20251103
> git tree: linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=17b2932f980000
> kernel config: https://syzkaller.appspot.com/x/.config?x=43cc0e31558cb527
> dashboard link: https://syzkaller.appspot.com/bug?extid=1957b26299cf3ff7890c
> 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=1347817c580000
#syz test
>
> syzbot found the following issue on:
>
> HEAD commit: 982312090977 Add linux-next specific files for 20251103
> git tree: linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=17b2932f980000
> kernel config: https://syzkaller.appspot.com/x/.config?x=43cc0e31558cb527
> dashboard link: https://syzkaller.appspot.com/bug?extid=1957b26299cf3ff7890c
> 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=1347817c580000
--- x/kernel/nscommon.c
+++ y/kernel/nscommon.c
@@ -117,9 +117,7 @@ struct ns_common *__must_check ns_owner(
void __ns_ref_active_get_owner(struct ns_common *ns)
{
- ns = ns_owner(ns);
- if (ns)
- WARN_ON_ONCE(atomic_add_negative(1, &ns->__ns_ref_active));
+ __ns_ref_active_resurrect(ns);
}
/*
--
syzbot
5:10 AM (2 hours ago) 5:10 AM
to hda...@sina.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
WARNING in put_mnt_ns
------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:255 at __ns_ref_put include/linux/ns_common.h:255 [inline], CPU#0: syz-executor/5842
WARNING: ./include/linux/ns_common.h:255 at put_mnt_ns+0x152/0x190 fs/namespace.c:6048, CPU#0: syz-executor/5842
Modules linked in:
CPU: 0 UID: 65534 PID: 5842 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
RIP: 0010:put_mnt_ns+0x152/0x190 fs/namespace.c:6048
Code: 79 00 00 bf 01 00 00 00 89 ee e8 69 84 7d ff 85 ed 7e 1f e8 20 80 7d ff 5b 41 5e 41 5f 5d e9 55 1f 1b 09 cc e8 0f 80 7d ff 90 <0f> 0b 90 e9 33 ff ff ff e8 01 80 7d ff 4c 89 f7 be 03 00 00 00 5b
RSP: 0018:ffffc90003eefa68 EFLAGS: 00010293
RAX: ffffffff8243fed1 RBX: ffff88802fc3f400 RCX: ffff88802e13bd00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffff88802fc3f4bb R09: 1ffff11005f87e97
R10: dffffc0000000000 R11: ffffed1005f87e98 R12: dffffc0000000000
R13: 0000000000000009 R14: ffff88802fc3f4b8 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125ec2000(0000) knlGS:0000000000000000
Call Trace:
<TASK>
free_nsproxy+0x46/0x560 kernel/nsproxy.c:192
do_exit+0x6b8/0x2300 kernel/exit.c:969
do_group_exit+0x21c/0x2d0 kernel/exit.c:1111
get_signal+0x1285/0x1340 kernel/signal.c:3034
arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop+0x87/0x4f0 kernel/entry/common.c:75
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
do_syscall_64+0x2e9/0xfa0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feae338d6ba
Code: Unable to access opcode bytes at 0x7feae338d690.
RSP: 002b:00007ffc8284b0b8 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007feae338d6ba
RDX: 00007ffc8284b0e0 RSI: 00007ffc8284b170 RDI: 00000000ffffff9c
RBP: 00007ffc8284b170 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffc8284c200
R13: 00007feae3411d7d R14: 000000000001439b R15: 00007ffc8284c240
</TASK>
Warning: Permanently added '10.128.1.3' (ED25519) to the list of known hosts.
2025/11/07 10:09:29 parsed 1 programs
[ 78.288542][ T5828] cgroup: Unknown subsys name 'net'
[ 78.416733][ T5828] cgroup: Unknown subsys name 'cpuset'
[ 78.426689][ T5828] cgroup: Unknown subsys name 'rlimit'
[ 79.889458][ T5828] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 82.629193][ T5847] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 82.638151][ T5847] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 82.647237][ T5847] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 82.664577][ T5847] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 82.682261][ T5847] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 82.921495][ T5842] ------------[ cut here ]------------
[ 82.927200][ T5842] WARNING: ./include/linux/ns_common.h:255 at put_mnt_ns+0x152/0x190, CPU#0: syz-executor/5842
[ 82.937894][ T5842] Modules linked in:
[ 82.941836][ T5842] CPU: 0 UID: 65534 PID: 5842 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 82.951938][ T5842] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 82.962381][ T5842] RIP: 0010:put_mnt_ns+0x152/0x190
[ 82.967868][ T5842] Code: 79 00 00 bf 01 00 00 00 89 ee e8 69 84 7d ff 85 ed 7e 1f e8 20 80 7d ff 5b 41 5e 41 5f 5d e9 55 1f 1b 09 cc e8 0f 80 7d ff 90 <0f> 0b 90 e9 33 ff ff ff e8 01 80 7d ff 4c 89 f7 be 03 00 00 00 5b
[ 82.987767][ T5842] RSP: 0018:ffffc90003eefa68 EFLAGS: 00010293
[ 82.993919][ T5842] RAX: ffffffff8243fed1 RBX: ffff88802fc3f400 RCX: ffff88802e13bd00
[ 83.002172][ T5842] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
[ 83.010751][ T5842] RBP: 0000000000000001 R08: ffff88802fc3f4bb R09: 1ffff11005f87e97
[ 83.020230][ T5842] R10: dffffc0000000000 R11: ffffed1005f87e98 R12: dffffc0000000000
[ 83.029164][ T5842] R13: 0000000000000009 R14: ffff88802fc3f4b8 R15: dffffc0000000000
[ 83.037473][ T5842] FS: 0000000000000000(0000) GS:ffff888125ec2000(0000) knlGS:0000000000000000
[ 83.046645][ T5842] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 83.053615][ T5842] CR2: 00007f87b83b11b8 CR3: 0000000072322000 CR4: 00000000003526f0
[ 83.061783][ T5842] Call Trace:
[ 83.065143][ T5842] <TASK>
[ 83.068100][ T5842] free_nsproxy+0x46/0x560
[ 83.072540][ T5842] do_exit+0x6b8/0x2300
[ 83.076810][ T5842] ? do_raw_spin_lock+0x121/0x290
[ 83.081866][ T5842] ? __pfx_do_exit+0x10/0x10
[ 83.086652][ T5842] do_group_exit+0x21c/0x2d0
[ 83.091298][ T5842] ? lockdep_hardirqs_on+0x9c/0x150
[ 83.096895][ T5842] get_signal+0x1285/0x1340
[ 83.101440][ T5842] arch_do_signal_or_restart+0x9a/0x7a0
[ 83.107287][ T5842] ? __pfx___x64_sys_newfstatat+0x10/0x10
[ 83.113020][ T5842] ? __pfx_arch_do_signal_or_restart+0x10/0x10
[ 83.119908][ T5842] ? exit_to_user_mode_loop+0x55/0x4f0
[ 83.125440][ T5842] exit_to_user_mode_loop+0x87/0x4f0
[ 83.130743][ T5842] ? rcu_is_watching+0x15/0xb0
[ 83.135661][ T5842] do_syscall_64+0x2e9/0xfa0
[ 83.140369][ T5842] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 83.146684][ T5842] ? clear_bhb_loop+0x60/0xb0
[ 83.152080][ T5842] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 83.158131][ T5842] RIP: 0033:0x7feae338d6ba
[ 83.162655][ T5842] Code: Unable to access opcode bytes at 0x7feae338d690.
[ 83.169945][ T5842] RSP: 002b:00007ffc8284b0b8 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
[ 83.178597][ T5842] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007feae338d6ba
[ 83.186812][ T5842] RDX: 00007ffc8284b0e0 RSI: 00007ffc8284b170 RDI: 00000000ffffff9c
[ 83.195470][ T5842] RBP: 00007ffc8284b170 R08: 0000000000000000 R09: 0000000000000000
[ 83.203858][ T5842] R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffc8284c200
[ 83.211844][ T5842] R13: 00007feae3411d7d R14: 000000000001439b R15: 00007ffc8284c240
[ 83.220362][ T5842] </TASK>
[ 83.223447][ T5842] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 83.230752][ T5842] CPU: 0 UID: 65534 PID: 5842 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 83.240723][ T5842] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 83.250865][ T5842] Call Trace:
[ 83.254246][ T5842] <TASK>
[ 83.257384][ T5842] dump_stack_lvl+0x99/0x250
[ 83.262068][ T5842] ? __asan_memcpy+0x40/0x70
[ 83.266749][ T5842] ? __pfx_dump_stack_lvl+0x10/0x10
[ 83.271940][ T5842] ? __pfx__printk+0x10/0x10
[ 83.276615][ T5842] vpanic+0x237/0x6d0
[ 83.280587][ T5842] ? __pfx_vpanic+0x10/0x10
[ 83.285341][ T5842] ? is_bpf_text_address+0x292/0x2b0
[ 83.290628][ T5842] ? is_bpf_text_address+0x26/0x2b0
[ 83.296081][ T5842] panic+0xb9/0xc0
[ 83.300039][ T5842] ? __pfx_panic+0x10/0x10
[ 83.304452][ T5842] __warn+0x334/0x4c0
[ 83.308596][ T5842] ? put_mnt_ns+0x152/0x190
[ 83.313099][ T5842] ? put_mnt_ns+0x152/0x190
[ 83.317691][ T5842] report_bug+0x2be/0x4f0
[ 83.322014][ T5842] ? put_mnt_ns+0x152/0x190
[ 83.326942][ T5842] ? put_mnt_ns+0x152/0x190
[ 83.331541][ T5842] ? put_mnt_ns+0x154/0x190
[ 83.336057][ T5842] handle_bug+0x84/0x160
[ 83.340300][ T5842] exc_invalid_op+0x1a/0x50
[ 83.344913][ T5842] asm_exc_invalid_op+0x1a/0x20
[ 83.349840][ T5842] RIP: 0010:put_mnt_ns+0x152/0x190
[ 83.355313][ T5842] Code: 79 00 00 bf 01 00 00 00 89 ee e8 69 84 7d ff 85 ed 7e 1f e8 20 80 7d ff 5b 41 5e 41 5f 5d e9 55 1f 1b 09 cc e8 0f 80 7d ff 90 <0f> 0b 90 e9 33 ff ff ff e8 01 80 7d ff 4c 89 f7 be 03 00 00 00 5b
[ 83.375977][ T5842] RSP: 0018:ffffc90003eefa68 EFLAGS: 00010293
[ 83.382309][ T5842] RAX: ffffffff8243fed1 RBX: ffff88802fc3f400 RCX: ffff88802e13bd00
[ 83.390278][ T5842] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
[ 83.398243][ T5842] RBP: 0000000000000001 R08: ffff88802fc3f4bb R09: 1ffff11005f87e97
[ 83.406469][ T5842] R10: dffffc0000000000 R11: ffffed1005f87e98 R12: dffffc0000000000
[ 83.414604][ T5842] R13: 0000000000000009 R14: ffff88802fc3f4b8 R15: dffffc0000000000
[ 83.422581][ T5842] ? put_mnt_ns+0x151/0x190
[ 83.427262][ T5842] ? put_mnt_ns+0x151/0x190
[ 83.431955][ T5842] free_nsproxy+0x46/0x560
[ 83.436568][ T5842] do_exit+0x6b8/0x2300
[ 83.440872][ T5842] ? do_raw_spin_lock+0x121/0x290
[ 83.446184][ T5842] ? __pfx_do_exit+0x10/0x10
[ 83.450965][ T5842] do_group_exit+0x21c/0x2d0
[ 83.455810][ T5842] ? lockdep_hardirqs_on+0x9c/0x150
[ 83.461175][ T5842] get_signal+0x1285/0x1340
[ 83.465772][ T5842] arch_do_signal_or_restart+0x9a/0x7a0
[ 83.471517][ T5842] ? __pfx___x64_sys_newfstatat+0x10/0x10
[ 83.477333][ T5842] ? __pfx_arch_do_signal_or_restart+0x10/0x10
[ 83.483629][ T5842] ? exit_to_user_mode_loop+0x55/0x4f0
[ 83.489447][ T5842] exit_to_user_mode_loop+0x87/0x4f0
[ 83.495157][ T5842] ? rcu_is_watching+0x15/0xb0
[ 83.500008][ T5842] do_syscall_64+0x2e9/0xfa0
[ 83.504738][ T5842] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 83.510801][ T5842] ? clear_bhb_loop+0x60/0xb0
[ 83.515473][ T5842] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 83.521699][ T5842] RIP: 0033:0x7feae338d6ba
[ 83.526273][ T5842] Code: Unable to access opcode bytes at 0x7feae338d690.
[ 83.533448][ T5842] RSP: 002b:00007ffc8284b0b8 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
[ 83.541954][ T5842] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007feae338d6ba
[ 83.549920][ T5842] RDX: 00007ffc8284b0e0 RSI: 00007ffc8284b170 RDI: 00000000ffffff9c
[ 83.558226][ T5842] RBP: 00007ffc8284b170 R08: 0000000000000000 R09: 0000000000000000
[ 83.566282][ T5842] R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffc8284c200
[ 83.574415][ T5842] R13: 00007feae3411d7d R14: 000000000001439b R15: 00007ffc8284c240
[ 83.582562][ T5842] </TASK>
[ 83.585836][ T5842] Kernel Offset: disabled
[ 83.590261][ T5842] Rebooting in 86400 seconds..
syzkaller build log:
go env (err=<nil>)
AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE='auto'
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build1062286916=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOMODCACHE='/syzkaller/jobs/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.24.4'
GOWORK=''
PKG_CONFIG='pkg-config'
git status (err=<nil>)
HEAD detached at 2c50b6a91af
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=2c50b6a91afe391fad4d14f7b7d7167d570089dd -X github.com/google/syzkaller/prog.gitRevisionDate=20251030-144239" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=2c50b6a91afe391fad4d14f7b7d7167d570089dd -X github.com/google/syzkaller/prog.gitRevisionDate=20251030-144239" ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=2c50b6a91afe391fad4d14f7b7d7167d570089dd -X github.com/google/syzkaller/prog.gitRevisionDate=20251030-144239" -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"2c50b6a91afe391fad4d14f7b7d7167d570089dd\"
/usr/bin/ld: /tmp/ccgWstkz.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
./tools/check-syzos.sh 2>/dev/null
Tested on:
commit: 9c0826a5 Add linux-next specific files for 20251107
git tree: linux-next
kernel config: https://syzkaller.appspot.com/x/.config?x=f2ebeee52bf052b8
syzbot tried to test the proposed patch but the build/boot failed:
WARNING in put_mnt_ns
------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:255 at __ns_ref_put include/linux/ns_common.h:255 [inline], CPU#0: syz-executor/5842
WARNING: ./include/linux/ns_common.h:255 at put_mnt_ns+0x152/0x190 fs/namespace.c:6048, CPU#0: syz-executor/5842
Modules linked in:
CPU: 0 UID: 65534 PID: 5842 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__ns_ref_put include/linux/ns_common.h:255 [inline]
RIP: 0010:put_mnt_ns+0x152/0x190 fs/namespace.c:6048
Code: 79 00 00 bf 01 00 00 00 89 ee e8 69 84 7d ff 85 ed 7e 1f e8 20 80 7d ff 5b 41 5e 41 5f 5d e9 55 1f 1b 09 cc e8 0f 80 7d ff 90 <0f> 0b 90 e9 33 ff ff ff e8 01 80 7d ff 4c 89 f7 be 03 00 00 00 5b
RSP: 0018:ffffc90003eefa68 EFLAGS: 00010293
RAX: ffffffff8243fed1 RBX: ffff88802fc3f400 RCX: ffff88802e13bd00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffff88802fc3f4bb R09: 1ffff11005f87e97
R10: dffffc0000000000 R11: ffffed1005f87e98 R12: dffffc0000000000
R13: 0000000000000009 R14: ffff88802fc3f4b8 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125ec2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f87b83b11b8 CR3: 0000000072322000 CR4: 00000000003526f0
Call Trace:
<TASK>
free_nsproxy+0x46/0x560 kernel/nsproxy.c:192
do_exit+0x6b8/0x2300 kernel/exit.c:969
do_group_exit+0x21c/0x2d0 kernel/exit.c:1111
get_signal+0x1285/0x1340 kernel/signal.c:3034
arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop+0x87/0x4f0 kernel/entry/common.c:75
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
do_syscall_64+0x2e9/0xfa0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feae338d6ba
Code: Unable to access opcode bytes at 0x7feae338d690.
RSP: 002b:00007ffc8284b0b8 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007feae338d6ba
RDX: 00007ffc8284b0e0 RSI: 00007ffc8284b170 RDI: 00000000ffffff9c
RBP: 00007ffc8284b170 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffc8284c200
R13: 00007feae3411d7d R14: 000000000001439b R15: 00007ffc8284c240
</TASK>
Warning: Permanently added '10.128.1.3' (ED25519) to the list of known hosts.
2025/11/07 10:09:29 parsed 1 programs
[ 78.288542][ T5828] cgroup: Unknown subsys name 'net'
[ 78.416733][ T5828] cgroup: Unknown subsys name 'cpuset'
[ 78.426689][ T5828] cgroup: Unknown subsys name 'rlimit'
[ 79.889458][ T5828] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 82.629193][ T5847] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 82.638151][ T5847] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 82.647237][ T5847] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 82.664577][ T5847] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 82.682261][ T5847] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 82.921495][ T5842] ------------[ cut here ]------------
[ 82.927200][ T5842] WARNING: ./include/linux/ns_common.h:255 at put_mnt_ns+0x152/0x190, CPU#0: syz-executor/5842
[ 82.937894][ T5842] Modules linked in:
[ 82.941836][ T5842] CPU: 0 UID: 65534 PID: 5842 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 82.951938][ T5842] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 82.962381][ T5842] RIP: 0010:put_mnt_ns+0x152/0x190
[ 82.967868][ T5842] Code: 79 00 00 bf 01 00 00 00 89 ee e8 69 84 7d ff 85 ed 7e 1f e8 20 80 7d ff 5b 41 5e 41 5f 5d e9 55 1f 1b 09 cc e8 0f 80 7d ff 90 <0f> 0b 90 e9 33 ff ff ff e8 01 80 7d ff 4c 89 f7 be 03 00 00 00 5b
[ 82.987767][ T5842] RSP: 0018:ffffc90003eefa68 EFLAGS: 00010293
[ 82.993919][ T5842] RAX: ffffffff8243fed1 RBX: ffff88802fc3f400 RCX: ffff88802e13bd00
[ 83.002172][ T5842] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
[ 83.010751][ T5842] RBP: 0000000000000001 R08: ffff88802fc3f4bb R09: 1ffff11005f87e97
[ 83.020230][ T5842] R10: dffffc0000000000 R11: ffffed1005f87e98 R12: dffffc0000000000
[ 83.029164][ T5842] R13: 0000000000000009 R14: ffff88802fc3f4b8 R15: dffffc0000000000
[ 83.037473][ T5842] FS: 0000000000000000(0000) GS:ffff888125ec2000(0000) knlGS:0000000000000000
[ 83.046645][ T5842] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 83.053615][ T5842] CR2: 00007f87b83b11b8 CR3: 0000000072322000 CR4: 00000000003526f0
[ 83.061783][ T5842] Call Trace:
[ 83.065143][ T5842] <TASK>
[ 83.068100][ T5842] free_nsproxy+0x46/0x560
[ 83.072540][ T5842] do_exit+0x6b8/0x2300
[ 83.076810][ T5842] ? do_raw_spin_lock+0x121/0x290
[ 83.081866][ T5842] ? __pfx_do_exit+0x10/0x10
[ 83.086652][ T5842] do_group_exit+0x21c/0x2d0
[ 83.091298][ T5842] ? lockdep_hardirqs_on+0x9c/0x150
[ 83.096895][ T5842] get_signal+0x1285/0x1340
[ 83.101440][ T5842] arch_do_signal_or_restart+0x9a/0x7a0
[ 83.107287][ T5842] ? __pfx___x64_sys_newfstatat+0x10/0x10
[ 83.113020][ T5842] ? __pfx_arch_do_signal_or_restart+0x10/0x10
[ 83.119908][ T5842] ? exit_to_user_mode_loop+0x55/0x4f0
[ 83.125440][ T5842] exit_to_user_mode_loop+0x87/0x4f0
[ 83.130743][ T5842] ? rcu_is_watching+0x15/0xb0
[ 83.135661][ T5842] do_syscall_64+0x2e9/0xfa0
[ 83.140369][ T5842] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 83.146684][ T5842] ? clear_bhb_loop+0x60/0xb0
[ 83.152080][ T5842] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 83.158131][ T5842] RIP: 0033:0x7feae338d6ba
[ 83.162655][ T5842] Code: Unable to access opcode bytes at 0x7feae338d690.
[ 83.169945][ T5842] RSP: 002b:00007ffc8284b0b8 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
[ 83.178597][ T5842] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007feae338d6ba
[ 83.186812][ T5842] RDX: 00007ffc8284b0e0 RSI: 00007ffc8284b170 RDI: 00000000ffffff9c
[ 83.195470][ T5842] RBP: 00007ffc8284b170 R08: 0000000000000000 R09: 0000000000000000
[ 83.203858][ T5842] R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffc8284c200
[ 83.211844][ T5842] R13: 00007feae3411d7d R14: 000000000001439b R15: 00007ffc8284c240
[ 83.220362][ T5842] </TASK>
[ 83.223447][ T5842] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 83.230752][ T5842] CPU: 0 UID: 65534 PID: 5842 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 83.240723][ T5842] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 83.250865][ T5842] Call Trace:
[ 83.254246][ T5842] <TASK>
[ 83.257384][ T5842] dump_stack_lvl+0x99/0x250
[ 83.262068][ T5842] ? __asan_memcpy+0x40/0x70
[ 83.266749][ T5842] ? __pfx_dump_stack_lvl+0x10/0x10
[ 83.271940][ T5842] ? __pfx__printk+0x10/0x10
[ 83.276615][ T5842] vpanic+0x237/0x6d0
[ 83.280587][ T5842] ? __pfx_vpanic+0x10/0x10
[ 83.285341][ T5842] ? is_bpf_text_address+0x292/0x2b0
[ 83.290628][ T5842] ? is_bpf_text_address+0x26/0x2b0
[ 83.296081][ T5842] panic+0xb9/0xc0
[ 83.300039][ T5842] ? __pfx_panic+0x10/0x10
[ 83.304452][ T5842] __warn+0x334/0x4c0
[ 83.308596][ T5842] ? put_mnt_ns+0x152/0x190
[ 83.313099][ T5842] ? put_mnt_ns+0x152/0x190
[ 83.317691][ T5842] report_bug+0x2be/0x4f0
[ 83.322014][ T5842] ? put_mnt_ns+0x152/0x190
[ 83.326942][ T5842] ? put_mnt_ns+0x152/0x190
[ 83.331541][ T5842] ? put_mnt_ns+0x154/0x190
[ 83.336057][ T5842] handle_bug+0x84/0x160
[ 83.340300][ T5842] exc_invalid_op+0x1a/0x50
[ 83.344913][ T5842] asm_exc_invalid_op+0x1a/0x20
[ 83.349840][ T5842] RIP: 0010:put_mnt_ns+0x152/0x190
[ 83.355313][ T5842] Code: 79 00 00 bf 01 00 00 00 89 ee e8 69 84 7d ff 85 ed 7e 1f e8 20 80 7d ff 5b 41 5e 41 5f 5d e9 55 1f 1b 09 cc e8 0f 80 7d ff 90 <0f> 0b 90 e9 33 ff ff ff e8 01 80 7d ff 4c 89 f7 be 03 00 00 00 5b
[ 83.375977][ T5842] RSP: 0018:ffffc90003eefa68 EFLAGS: 00010293
[ 83.382309][ T5842] RAX: ffffffff8243fed1 RBX: ffff88802fc3f400 RCX: ffff88802e13bd00
[ 83.390278][ T5842] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
[ 83.398243][ T5842] RBP: 0000000000000001 R08: ffff88802fc3f4bb R09: 1ffff11005f87e97
[ 83.406469][ T5842] R10: dffffc0000000000 R11: ffffed1005f87e98 R12: dffffc0000000000
[ 83.414604][ T5842] R13: 0000000000000009 R14: ffff88802fc3f4b8 R15: dffffc0000000000
[ 83.422581][ T5842] ? put_mnt_ns+0x151/0x190
[ 83.427262][ T5842] ? put_mnt_ns+0x151/0x190
[ 83.431955][ T5842] free_nsproxy+0x46/0x560
[ 83.436568][ T5842] do_exit+0x6b8/0x2300
[ 83.440872][ T5842] ? do_raw_spin_lock+0x121/0x290
[ 83.446184][ T5842] ? __pfx_do_exit+0x10/0x10
[ 83.450965][ T5842] do_group_exit+0x21c/0x2d0
[ 83.455810][ T5842] ? lockdep_hardirqs_on+0x9c/0x150
[ 83.461175][ T5842] get_signal+0x1285/0x1340
[ 83.465772][ T5842] arch_do_signal_or_restart+0x9a/0x7a0
[ 83.471517][ T5842] ? __pfx___x64_sys_newfstatat+0x10/0x10
[ 83.477333][ T5842] ? __pfx_arch_do_signal_or_restart+0x10/0x10
[ 83.483629][ T5842] ? exit_to_user_mode_loop+0x55/0x4f0
[ 83.489447][ T5842] exit_to_user_mode_loop+0x87/0x4f0
[ 83.495157][ T5842] ? rcu_is_watching+0x15/0xb0
[ 83.500008][ T5842] do_syscall_64+0x2e9/0xfa0
[ 83.504738][ T5842] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 83.510801][ T5842] ? clear_bhb_loop+0x60/0xb0
[ 83.515473][ T5842] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 83.521699][ T5842] RIP: 0033:0x7feae338d6ba
[ 83.526273][ T5842] Code: Unable to access opcode bytes at 0x7feae338d690.
[ 83.533448][ T5842] RSP: 002b:00007ffc8284b0b8 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
[ 83.541954][ T5842] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007feae338d6ba
[ 83.549920][ T5842] RDX: 00007ffc8284b0e0 RSI: 00007ffc8284b170 RDI: 00000000ffffff9c
[ 83.558226][ T5842] RBP: 00007ffc8284b170 R08: 0000000000000000 R09: 0000000000000000
[ 83.566282][ T5842] R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffc8284c200
[ 83.574415][ T5842] R13: 00007feae3411d7d R14: 000000000001439b R15: 00007ffc8284c240
[ 83.582562][ T5842] </TASK>
[ 83.585836][ T5842] Kernel Offset: disabled
[ 83.590261][ T5842] Rebooting in 86400 seconds..
syzkaller build log:
go env (err=<nil>)
AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE='auto'
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build1062286916=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOMODCACHE='/syzkaller/jobs/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.24.4'
GOWORK=''
PKG_CONFIG='pkg-config'
git status (err=<nil>)
HEAD detached at 2c50b6a91af
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=2c50b6a91afe391fad4d14f7b7d7167d570089dd -X github.com/google/syzkaller/prog.gitRevisionDate=20251030-144239" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=2c50b6a91afe391fad4d14f7b7d7167d570089dd -X github.com/google/syzkaller/prog.gitRevisionDate=20251030-144239" ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=2c50b6a91afe391fad4d14f7b7d7167d570089dd -X github.com/google/syzkaller/prog.gitRevisionDate=20251030-144239" -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"2c50b6a91afe391fad4d14f7b7d7167d570089dd\"
/usr/bin/ld: /tmp/ccgWstkz.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
./tools/check-syzos.sh 2>/dev/null
Tested on:
commit: 9c0826a5 Add linux-next specific files for 20251107
git tree: linux-next
kernel config: https://syzkaller.appspot.com/x/.config?x=f2ebeee52bf052b8
dashboard link: https://syzkaller.appspot.com/bug?extid=1957b26299cf3ff7890c
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=15951114580000
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
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