syzbot


WARNING in drv_unassign_vif_chanctx (3)

Status: upstream: reported on 2025/08/05 15:57
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+6506f7abde798179ecc4@syzkaller.appspotmail.com
First crash: 98d, last: 1h18m
Discussions (4)
Title Replies (including bot) Last reply
[syzbot] Monthly wireless report (Oct 2025) 0 (1) 2025/10/27 08:42
[syzbot] Monthly wireless report (Sep 2025) 0 (1) 2025/09/25 16:01
[syzbot] Monthly wireless report (Aug 2025) 0 (1) 2025/08/25 13:19
[syzbot] [wireless?] WARNING in drv_unassign_vif_chanctx (3) 0 (1) 2025/08/05 15:57
Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in drv_unassign_vif_chanctx wireless -1 2 621d 621d 0/29 auto-obsoleted due to no activity on 2024/06/05 06:49
upstream WARNING in drv_unassign_vif_chanctx (2) wireless -1 1 318d 314d 0/29 auto-obsoleted due to no activity on 2025/04/04 09:01

Sample crash report:
bond3 (unregistering): Released all slaves
tipc: Disabling bearer <udp:s>
tipc: Left network mode
tipc: Disabling bearer <udp:s>
tipc: Left network mode
------------[ cut here ]------------
wlan1: Failed check-sdata-in-driver check, flags: 0x0
WARNING: CPU: 0 PID: 62 at net/mac80211/driver-ops.c:366 drv_unassign_vif_chanctx+0x247/0x850 net/mac80211/driver-ops.c:366
Modules linked in:
CPU: 0 UID: 0 PID: 62 Comm: kworker/u8:4 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:drv_unassign_vif_chanctx+0x247/0x850 net/mac80211/driver-ops.c:366
Code: 74 24 10 48 81 c6 20 01 00 00 48 89 74 24 10 e8 8f 3f ef f6 8b 54 24 04 48 8b 74 24 10 48 c7 c7 a0 ae e2 8c e8 2a 6f ad f6 90 <0f> 0b 90 90 e8 70 3f ef f6 4c 89 f2 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffffc9000213f5a8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff888075af4d80 RCX: ffffffff817b3ee8
RDX: ffff88801db8a480 RSI: ffffffff817b3ef5 RDI: 0000000000000001
RBP: ffff888032968e80 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: fffffffffffc40c0 R12: ffff888075af6ad8
R13: 0000000000000000 R14: ffff888075af57b8 R15: ffff888075af6a80
FS:  0000000000000000(0000) GS:ffff888124a08000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f44d86d1140 CR3: 000000000e182000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 ieee80211_assign_link_chanctx+0x3f1/0xf00 net/mac80211/chan.c:905
 __ieee80211_link_release_channel+0x273/0x4b0 net/mac80211/chan.c:1879
 ieee80211_link_release_channel+0x128/0x200 net/mac80211/chan.c:2154
 unregister_netdevice_many_notify+0x1402/0x25c0 net/core/dev.c:12305
 unregister_netdevice_many net/core/dev.c:12347 [inline]
 unregister_netdevice_queue+0x305/0x3f0 net/core/dev.c:12161
 unregister_netdevice include/linux/netdevice.h:3389 [inline]
 _cfg80211_unregister_wdev+0x64b/0x830 net/wireless/core.c:1284
 ieee80211_remove_interfaces+0x34e/0x740 net/mac80211/iface.c:2386
 ieee80211_unregister_hw+0x55/0x3a0 net/mac80211/main.c:1681
 mac80211_hwsim_del_radio drivers/net/wireless/virtual/mac80211_hwsim.c:5909 [inline]
 hwsim_exit_net+0x788/0x1590 drivers/net/wireless/virtual/mac80211_hwsim.c:6800
 ops_exit_list net/core/net_namespace.c:199 [inline]
 ops_undo_list+0x2ee/0xab0 net/core/net_namespace.c:252
 cleanup_net+0x41b/0x8b0 net/core/net_namespace.c:695
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (2250):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/11/08 14:19 upstream e811c33b1f13 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/08 11:55 upstream e811c33b1f13 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/08 00:43 upstream 38a2c275c3d3 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/06 21:23 upstream c2c2ccfd4ba7 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/06 08:09 upstream dc77806cf3b4 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drv_unassign_vif_chanctx
2025/11/06 07:03 upstream dc77806cf3b4 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/06 05:30 upstream dc77806cf3b4 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/06 00:18 upstream 1c353dc8d962 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/05 13:22 upstream 1c353dc8d962 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/05 04:57 upstream c9cfc122f037 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/04 23:17 upstream c9cfc122f037 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/04 17:28 upstream c9cfc122f037 686bf657 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/03 17:08 upstream 6146a0f1dfae 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/03 14:45 upstream 6146a0f1dfae 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/03 13:29 upstream 6146a0f1dfae 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/03 01:46 upstream 6146a0f1dfae 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drv_unassign_vif_chanctx
2025/11/02 23:43 upstream 6146a0f1dfae 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/02 18:32 upstream 691d401c7e0e 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/10/29 17:32 upstream e53642b87a4f fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in drv_unassign_vif_chanctx
2025/10/18 11:03 upstream f406055cb18c 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in drv_unassign_vif_chanctx
2025/08/05 10:20 upstream 7e161a991ea7 abdcb213 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drv_unassign_vif_chanctx
2025/11/02 04:36 upstream 691d401c7e0e 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in drv_unassign_vif_chanctx
2025/11/04 00:20 upstream 8bb886cb8f3a e6c64ba8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in drv_unassign_vif_chanctx
2025/11/03 17:52 upstream 6146a0f1dfae e6c64ba8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in drv_unassign_vif_chanctx
2025/11/03 06:34 upstream 6146a0f1dfae 2c50b6a9 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in drv_unassign_vif_chanctx
2025/11/08 02:31 upstream da32d155f4a8 4e1406b4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/07 23:07 upstream da32d155f4a8 4e1406b4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/06 18:59 upstream c2c2ccfd4ba7 4e1406b4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/06 16:21 upstream dc77806cf3b4 4e1406b4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/06 13:02 upstream dc77806cf3b4 a6c9c731 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/05 22:49 upstream dc77806cf3b4 a6c9c731 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/05 20:18 upstream 284922f4c563 a6c9c731 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/05 18:23 upstream 284922f4c563 a6c9c731 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/04 10:32 upstream 8bb886cb8f3a e6c64ba8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/03 11:11 upstream 6146a0f1dfae 2c50b6a9 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/03 10:11 upstream 6146a0f1dfae 2c50b6a9 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/02 21:22 upstream 6146a0f1dfae 2c50b6a9 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/11/02 15:29 upstream 691d401c7e0e 2c50b6a9 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drv_unassign_vif_chanctx
2025/10/06 15:23 net 1b54b0756f05 91305dbe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/08 06:16 net-next c6934c4e049c 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/08 04:51 net-next c6934c4e049c 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/07 20:56 net-next c6934c4e049c 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/07 16:03 net-next 6fc33710cd6c 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/07 14:42 net-next 6fc33710cd6c 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/07 13:38 net-next 6fc33710cd6c 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/07 10:36 net-next 6fc33710cd6c 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/07 07:45 net-next 6fc33710cd6c 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/06 22:25 net-next 13068e9d5726 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/06 03:39 net-next c79a02252457 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/05 14:52 net-next 89aec171d9d1 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/04 15:59 net-next 209ff7af79bf 686bf657 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/04 14:42 net-next 209ff7af79bf 686bf657 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/04 13:03 net-next 209ff7af79bf 686bf657 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/04 12:03 net-next 209ff7af79bf 686bf657 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/04 07:52 net-next 209ff7af79bf 686bf657 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/03 15:49 net-next 01cc760632b8 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/08/01 15:45 net-next d9104cec3e8f 40127d41 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/07 03:56 linux-next df5d79720b15 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in drv_unassign_vif_chanctx
2025/11/06 02:34 linux-next 84d39fb9d529 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in drv_unassign_vif_chanctx
2025/11/05 08:19 linux-next 84d39fb9d529 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/03 19:09 linux-next 98bd8b16ae57 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in drv_unassign_vif_chanctx
2025/11/06 09:03 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci dcb6fa37fd7b a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drv_unassign_vif_chanctx
2025/11/05 01:25 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci dcb6fa37fd7b a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drv_unassign_vif_chanctx
* Struck through repros no longer work on HEAD.