syzbot


WARNING in ieee80211_link_info_change_notify

Status: upstream: reported on 2026/05/22 04:27
Reported-by: syzbot+d78755d1d93ad022d727@syzkaller.appspotmail.com
First crash: 6d09h, last: 21h04m
Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in ieee80211_link_info_change_notify origin:upstream missing-backport -1 C done 787 673d 1176d 0/3 upstream: reported C repro on 2023/03/08 22:37
upstream WARNING in ieee80211_link_info_change_notify wireless -1 C inconclusive 1376 1189d 1431d 22/29 fixed on 2023/02/24 13:50
upstream WARNING in ieee80211_link_info_change_notify (3) wireless -1 20 175d 292d 0/29 auto-obsoleted due to no activity on 2026/03/01 12:39
upstream WARNING in ieee80211_link_info_change_notify (2) wireless -1 C inconclusive 8918 716d 1184d 26/29 fixed on 2024/06/18 10:18

Sample crash report:
------------[ cut here ]------------
wlan1: Failed check-sdata-in-driver check, flags: 0x0
WARNING: CPU: 1 PID: 7811 at net/mac80211/main.c:291 ieee80211_link_info_change_notify+0x250/0x2f0 net/mac80211/main.c:291
Modules linked in:
CPU: 1 PID: 7811 Comm: syz.1.438 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:ieee80211_link_info_change_notify+0x250/0x2f0 net/mac80211/main.c:291
Code: 74 05 e8 33 3c ea f7 49 8b 86 10 09 00 00 49 8d b6 30 09 00 00 48 85 c0 48 0f 45 f0 48 c7 c7 a0 c4 de 8b 89 ea e8 60 ae 5b f7 <0f> 0b e9 f8 fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 3c fe ff
RSP: 0018:ffffc90004a3fab0 EFLAGS: 00010246
RAX: 0aa06bd27c9f6200 RBX: 0000000000040000 RCX: 0000000000080000
RDX: ffffc9000cae9000 RSI: 00000000000077bb RDI: 00000000000077bc
RBP: 0000000000000000 R08: ffffc90004a3f6a7 R09: 1ffff92000947ed4
R10: dffffc0000000000 R11: fffff52000947ed5 R12: dffffc0000000000
R13: ffff88805bc915a0 R14: ffff88805bc90c80 R15: ffff88805bc91598
FS:  00007f8468add6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000005ce70000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 ieee80211_set_tx_power+0x28f/0x960 net/mac80211/cfg.c:-1
 rdev_set_tx_power net/wireless/rdev-ops.h:598 [inline]
 cfg80211_wext_siwtxpower+0x32f/0x500 net/wireless/wext-compat.c:976
 ioctl_standard_call+0xd8/0x2b0 net/wireless/wext-core.c:1045
 wireless_process_ioctl net/wireless/wext-core.c:-1 [inline]
 wext_ioctl_dispatch+0x1cb/0x600 net/wireless/wext-core.c:1016
 wext_handle_ioctl+0x117/0x1d0 net/wireless/wext-core.c:1077
 sock_ioctl+0x15d/0x7e0 net/socket.c:1272
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f8467b9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8468add028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8467e15fa0 RCX: 00007f8467b9ce59
RDX: 0000200000000000 RSI: 0000000000008b26 RDI: 0000000000000009
RBP: 00007f8467c32d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8467e16038 R14: 00007f8467e15fa0 R15: 00007ffdf85d1d08
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/27 16:39 linux-6.6.y 0a40c6fbd105 8777bdc3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_info_change_notify
2026/05/22 04:26 linux-6.6.y eac8889a3a1c 70ae9b03 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_link_info_change_notify
* Struck through repros no longer work on HEAD.