syzbot


WARNING in ieee80211_link_info_change_notify (3)

Status: upstream: reported on 2025/08/09 08:08
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+4b9a40c62f9a80195a4f@syzkaller.appspotmail.com
First crash: 22d, last: 9h04m
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [wireless?] WARNING in ieee80211_link_info_change_notify (3) 0 (1) 2025/08/09 08:08
Similar bugs (3)
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 399d 902d 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 915d 1158d 22/29 fixed on 2023/02/24 13:50
upstream WARNING in ieee80211_link_info_change_notify (2) wireless -1 C inconclusive 8918 443d 911d 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: 0 PID: 14825 at net/mac80211/main.c:425 ieee80211_link_info_change_notify+0x349/0x3f0 net/mac80211/main.c:425
Modules linked in:
CPU: 0 UID: 0 PID: 14825 Comm: syz.4.1907 Not tainted 6.16.0-syzkaller-11699-g7e161a991ea7 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:ieee80211_link_info_change_notify+0x349/0x3f0 net/mac80211/main.c:425
Code: 74 24 08 48 81 c6 20 01 00 00 48 89 74 24 08 e8 fd f8 bc f6 8b 54 24 04 48 8b 74 24 08 48 c7 c7 c0 42 08 8d e8 48 97 7b f6 90 <0f> 0b 90 90 e9 0b fe ff ff e8 d9 f8 bc f6 90 0f 0b 90 e9 21 fd ff
RSP: 0018:ffffc90003c6fb30 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff88805ab04d80 RCX: ffffc9000e0ef000
RDX: 0000000000080000 RSI: ffffffff817a3315 RDI: 0000000000000001
RBP: 0000000000040000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88805ab05728
R13: ffff88805ab06500 R14: 0000000000000000 R15: ffff88805abe8e40
FS:  00007fb6b366a6c0(0000) GS:ffff8881246c6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdb6ffb5f40 CR3: 000000005f61b000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ieee80211_recalc_txpower+0xe4/0x110 net/mac80211/iface.c:81
 ieee80211_set_tx_power+0x2b8/0x10d0 net/mac80211/cfg.c:3263
 rdev_set_tx_power net/wireless/rdev-ops.h:600 [inline]
 cfg80211_wext_siwtxpower+0x30e/0x680 net/wireless/wext-compat.c:893
 ioctl_standard_call+0xb5/0x1d0 net/wireless/wext-core.c:1043
 wireless_process_ioctl.constprop.0+0x291/0x3d0 net/wireless/wext-core.c:981
 wext_ioctl_dispatch net/wireless/wext-core.c:1014 [inline]
 wext_ioctl_dispatch net/wireless/wext-core.c:1002 [inline]
 wext_handle_ioctl+0x226/0x2a0 net/wireless/wext-core.c:1075
 sock_ioctl+0x3a1/0x6b0 net/socket.c:1291
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl fs/ioctl.c:584 [inline]
 __x64_sys_ioctl+0x18b/0x210 fs/ioctl.c:584
 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: 0033:0x7fb6b278eb69
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:00007fb6b366a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb6b29b6080 RCX: 00007fb6b278eb69
RDX: 0000200000000040 RSI: 0000000000008b26 RDI: 0000000000000006
RBP: 00007fb6b2811df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb6b29b6080 R15: 00007fffe088baf8
 </TASK>

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/05 08:06 upstream 7e161a991ea7 abdcb213 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in ieee80211_link_info_change_notify
2025/08/27 10:06 upstream fab1beda7597 e12e5ba4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in ieee80211_link_info_change_notify
2025/08/18 15:56 upstream c17b750b3ad9 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ieee80211_link_info_change_notify
2025/08/15 16:10 upstream d7ee5bdce789 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ieee80211_link_info_change_notify
2025/08/15 16:09 upstream d7ee5bdce789 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ieee80211_link_info_change_notify
2025/08/10 20:37 net 33caa208dba6 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in ieee80211_link_info_change_notify
2025/08/19 09:29 linux-next 886e5e7b0432 523f460e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ieee80211_link_info_change_notify
* Struck through repros no longer work on HEAD.