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WARNING in ieee80211_ibss_csa_beacon (2)

Status: upstream: reported on 2025/11/18 07:37
Reported-by: syzbot+510f2b0097f0edee4ad2@syzkaller.appspotmail.com
First crash: 229d, last: 1d02h
▶ ▼ Similar bugs (10)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in ieee80211_ibss_csa_beacon wireless -1 C error 4997 1227d 2096d 22/29 fixed on 2023/02/24 13:50
linux-5.15 WARNING in ieee80211_ibss_csa_beacon (3) -1 18 18d 344d 0/3 upstream: reported on 2025/07/26 04:50
linux-6.6 WARNING in ieee80211_ibss_csa_beacon -1 1 375d 375d 0/2 auto-obsoleted due to no activity on 2025/10/03 10:51
linux-6.6 WARNING in ieee80211_ibss_csa_beacon (2) -1 6 25d 218d 0/2 upstream: reported on 2025/11/29 13:51
linux-4.19 WARNING in ieee80211_ibss_csa_beacon -1 C error 1037 1216d 2051d 0/1 upstream: reported C repro on 2020/11/22 05:50
linux-4.14 WARNING in ieee80211_ibss_csa_beacon -1 C 1 1233d 2065d 0/1 upstream: reported C repro on 2020/11/08 18:28
linux-5.15 WARNING in ieee80211_ibss_csa_beacon -1 504 604d 1214d 0/3 auto-obsoleted due to no activity on 2025/01/17 15:26
linux-5.15 WARNING in ieee80211_ibss_csa_beacon (2) -1 15 444d 529d 0/3 auto-obsoleted due to no activity on 2025/07/10 03:17
upstream WARNING in ieee80211_ibss_csa_beacon (2) wireless -1 2892 889d 1223d 0/29 auto-obsoleted due to no activity on 2024/04/07 10:40
linux-6.1 WARNING in ieee80211_ibss_csa_beacon -1 318 330d 1215d 0/3 auto-obsoleted due to no activity on 2025/10/18 20:45

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4903 at net/mac80211/ibss.c:500 ieee80211_ibss_csa_beacon+0x5b4/0x680 net/mac80211/ibss.c:500
Modules linked in:
CPU: 1 PID: 4903 Comm: kworker/u4:13 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: phy22 ieee80211_csa_finalize_work
RIP: 0010:ieee80211_ibss_csa_beacon+0x5b4/0x680 net/mac80211/ibss.c:500
Code: f7 c6 05 ac 26 63 04 01 48 c7 c7 b0 b4 a6 8b be fd 01 00 00 48 c7 c2 40 b5 a6 8b e8 d6 2a bb f7 e9 69 fe ff ff e8 1c a8 d8 f7 <0f> 0b b8 ea ff ff ff e9 7a ff ff ff e8 0b a8 d8 f7 0f 0b e9 b4 fa
RSP: 0018:ffffc9000c417b70 EFLAGS: 00010293
RAX: ffffffff89a97984 RBX: ffff888074360740 RCX: ffff88807b5e8000
RDX: 0000000000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf42e0
RBP: 1ffff1100a9a82b5 R08: ffffffff90b10307 R09: 1ffffffff2162060
R10: dffffc0000000000 R11: fffffbfff2162061 R12: dffffc0000000000
R13: ffff888054d41ac8 R14: ffff888054d40c80 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3211fff8 CR3: 00000000543c6000 CR4: 00000000003506e0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ieee80211_set_after_csa_beacon net/mac80211/cfg.c:3546 [inline]
 __ieee80211_csa_finalize net/mac80211/cfg.c:3602 [inline]
 ieee80211_csa_finalize+0x4ef/0xc60 net/mac80211/cfg.c:3625
 ieee80211_csa_finalize_work+0xf2/0x130 net/mac80211/cfg.c:3650
 process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Crashes (22):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/04 18:25 linux-6.1.y 090666d3cc90 fcece630 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2026/06/11 05:55 linux-6.1.y 228da13e907e b754d2d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2026/05/27 00:35 linux-6.1.y dcbcab9d7079 2b01f00e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2026/05/20 01:38 linux-6.1.y c27210688955 0909d65f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2026/05/15 11:57 linux-6.1.y ad16b162f21d 9cd3beaa .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2026/04/12 10:28 linux-6.1.y 8e8fc038cad5 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2026/03/09 18:29 linux-6.1.y f2ddafa93a25 176bead5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2026/03/05 19:50 linux-6.1.y f2ddafa93a25 d20b04c8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2026/02/13 19:34 linux-6.1.y 8ce36b2849ef 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2026/02/12 18:45 linux-6.1.y 8ce36b2849ef 504cb1bf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2026/02/10 14:06 linux-6.1.y 0182cb5b74ee 91d776d3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2025/12/14 00:03 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2025/12/11 03:47 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2025/11/29 14:48 linux-6.1.y f6e38ae624cf d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_ibss_csa_beacon
2026/07/04 00:37 linux-6.1.y fdb6fcb41cc7 fcece630 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in ieee80211_ibss_csa_beacon
2026/06/13 10:57 linux-6.1.y 228da13e907e 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in ieee80211_ibss_csa_beacon
2026/05/24 01:22 linux-6.1.y dcbcab9d7079 c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in ieee80211_ibss_csa_beacon
2026/05/23 20:30 linux-6.1.y dcbcab9d7079 c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in ieee80211_ibss_csa_beacon
2026/05/19 01:14 linux-6.1.y c27210688955 9f74d399 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in ieee80211_ibss_csa_beacon
2025/12/09 02:28 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in ieee80211_ibss_csa_beacon
2025/11/26 20:11 linux-6.1.y f6e38ae624cf d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in ieee80211_ibss_csa_beacon
2025/11/18 07:37 linux-6.1.y f6e38ae624cf ef766cd7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in ieee80211_ibss_csa_beacon
* Struck through repros no longer work on HEAD.