syzbot


WARNING in ieee80211_tx_skb_tid

Status: upstream: reported on 2025/08/17 21:16
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+8bd4574e8c52c48c2595@syzkaller.appspotmail.com
First crash: 9d12h, last: 2d15h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [wireless?] WARNING in ieee80211_tx_skb_tid 0 (1) 2025/08/17 21:16

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 14798 at net/mac80211/tx.c:6202 ieee80211_tx_skb_tid+0x3ef/0x4f0 net/mac80211/tx.c:6202
Modules linked in:
CPU: 0 UID: 0 PID: 14798 Comm: syz.4.2586 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:ieee80211_tx_skb_tid+0x3ef/0x4f0 net/mac80211/tx.c:6202
Code: c7 c0 24 09 8d c6 05 75 23 80 05 01 e8 8a 0e 84 f6 e9 2d fd ff ff e8 a0 29 a8 f6 90 0f 0b 90 e9 d7 fc ff ff e8 92 29 a8 f6 90 <0f> 0b 90 e8 a9 29 80 00 31 ff 89 c3 89 c6 e8 be 24 a8 f6 85 db 75
RSP: 0018:ffffc9000414f478 EFLAGS: 00010246
RAX: 0000000000080000 RBX: ffff888055c30d80 RCX: ffffc900140d4000
RDX: 0000000000080000 RSI: ffffffff8b1367ae RDI: 0000000000000005
RBP: 00000000ffffffff R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888027f7e640 R14: 0000000000000007 R15: 0000000000000000
FS:  00007f579a3496c0(0000) GS:ffff8881246bc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f75ac475f98 CR3: 0000000045a75000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ieee80211_tx_skb net/mac80211/ieee80211_i.h:2409 [inline]
 mesh_plink_frame_tx.isra.0+0x8a5/0xc60 net/mac80211/mesh_plink.c:354
 mesh_plink_deactivate+0x271/0x340 net/mac80211/mesh_plink.c:410
 mesh_sta_cleanup+0x35/0x70 net/mac80211/mesh.c:171
 __cleanup_single_sta+0x5c0/0x730 net/mac80211/sta_info.c:167
 cleanup_single_sta net/mac80211/sta_info.c:192 [inline]
 __sta_info_destroy_part2+0x389/0x540 net/mac80211/sta_info.c:1554
 __sta_info_flush+0x521/0x740 net/mac80211/sta_info.c:1683
 sta_info_flush net/mac80211/sta_info.h:970 [inline]
 ieee80211_do_stop+0x269/0x2520 net/mac80211/iface.c:509
 ieee80211_stop+0x169/0x320 net/mac80211/iface.c:814
 __dev_close_many+0x29b/0x760 net/core/dev.c:1755
 netif_close_many+0x233/0x630 net/core/dev.c:1780
 netif_close net/core/dev.c:1797 [inline]
 netif_close+0x17f/0x230 net/core/dev.c:1791
 dev_close+0xaa/0x240 net/core/dev_api.c:220
 cfg80211_shutdown_all_interfaces+0x9a/0x220 net/wireless/core.c:277
 cfg80211_rfkill_set_block net/wireless/core.c:307 [inline]
 cfg80211_rfkill_set_block+0x35/0x50 net/wireless/core.c:299
 rfkill_set_block+0x1fe/0x550 net/rfkill/core.c:346
 rfkill_fop_write+0x2c0/0x580 net/rfkill/core.c:1301
 vfs_write+0x29d/0x11d0 fs/read_write.c:684
 ksys_write+0x1f8/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f579958ebe9
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:00007f579a349038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f57997b6360 RCX: 00007f579958ebe9
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000008
RBP: 00007f5799611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f57997b63f8 R14: 00007f57997b6360 R15: 00007ffc856419c8
 </TASK>

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/20 17:51 upstream b19a97d57c15 bd178e57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in ieee80211_tx_skb_tid
2025/08/20 11:20 upstream b19a97d57c15 79512909 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in ieee80211_tx_skb_tid
2025/08/13 21:09 upstream 91325f31afc1 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ieee80211_tx_skb_tid
2025/08/13 21:08 upstream 91325f31afc1 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ieee80211_tx_skb_tid
* Struck through repros no longer work on HEAD.