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Sun, 30 Aug 2026 03:04:52 -0700 (PDT) Date: Sun, 30 Aug 2026 03:04:52 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a940044.1d9ded08.62e62.011a.GAE@google.com> Subject: [syzbot] WARNING in wiphy_delayed_work_cancel From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 818bebeb63dd drm/xe: Don't hand out the flat CCS storage a.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=11cff979580000 kernel config: https://syzkaller.appspot.com/x/.config?x=ccca94d2c01b9e78 dashboard link: https://syzkaller.appspot.com/bug?extid=e9cbd080a7801f06cf08 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1284d979580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e9cbd080a7801f06cf08@syzkaller.appspotmail.com ------------[ cut here ]------------ debug_locks && !(lock_is_held(&(&wiphy->mtx)->dep_map) != 0) WARNING: net/wireless/core.c:1957 at wiphy_delayed_work_cancel+0x9a/0xb0 net/wireless/core.c:1957, CPU#3: kworker/u32:0/12 Modules linked in: CPU: 3 UID: 0 PID: 12 Comm: kworker/u32:0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: netns cleanup_net RIP: 0010:wiphy_delayed_work_cancel+0x9a/0xb0 net/wireless/core.c:1957 Code: e8 bb a8 fa f6 48 8d 7d 60 be ff ff ff ff e8 ed 85 b6 00 31 ff 41 89 c4 89 c6 e8 11 a3 fa f6 45 85 e4 75 bf e8 97 a8 fa f6 90 <0f> 0b 90 eb b4 48 c7 c7 84 8a 43 91 e8 45 7c 6d f7 eb 90 0f 1f 00 RSP: 0018:ffffc900000f7740 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88802b5e18a8 RCX: 0000000000000000 RDX: ffff88801ee9cb00 RSI: ffffffff8b105939 RDI: ffff88801ee9cb00 RBP: ffff888103680740 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888103680f40 R15: ffff888103680f90 FS: 0000000000000000(0000) GS:ffff8880d5ea2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055979cdf8da8 CR3: 000000003e9c7000 CR4: 0000000000352ef0 Call Trace: ieee80211_free_keys+0xcd/0x640 net/mac80211/key.c:1148 ieee80211_teardown_sdata+0x54/0x250 net/mac80211/iface.c:906 unregister_netdevice_many_notify+0x1407/0x2150 net/core/dev.c:12537 unregister_netdevice_many net/core/dev.c:12589 [inline] default_device_exit_batch+0x907/0xbd0 net/core/dev.c:13288 ops_exit_list net/core/net_namespace.c:206 [inline] ops_undo_list+0x363/0xab0 net/core/net_namespace.c:253 cleanup_net+0x499/0x920 net/core/net_namespace.c:706 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3387 process_scheduled_works kernel/workqueue.c:3470 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3551 kthread+0x373/0x450 kernel/kthread.c:436 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- 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