syzbot


WARNING in __cfg80211_bss_update (2)

Status: upstream: reported C repro on 2024/07/09 00:36
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+1a797e1c81be78a2ace7@syzkaller.appspotmail.com
First crash: 220d, last: 1d06h
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in cfg80211_bss_update (log)
Repro: C syz .config
  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [wireless?] WARNING in __cfg80211_bss_update (2) 0 (2) 2024/07/17 08:55
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __cfg80211_bss_update wireless 1 446d 442d 0/28 auto-obsoleted due to no activity on 2024/03/02 19:52
Last patch testing requests (5)
Created Duration User Patch Repo Result
2025/01/22 08:04 27m retest repro net-next error
2025/01/07 23:48 2h50m retest repro upstream report log
2025/01/07 23:48 17m retest repro net report log
2024/10/19 06:15 21m retest repro net-next report log
2024/08/10 05:40 28m retest repro net-next report log
Fix bisection attempts (1)
Created Duration User Patch Repo Result
2025/02/10 13:36 2h55m bisect fix upstream OK (0) job log log

Sample crash report:
WARNING: CPU: 0 PID: 16 at net/wireless/scan.c:1744 cfg80211_combine_bsses net/wireless/scan.c:1744 [inline]
WARNING: CPU: 0 PID: 16 at net/wireless/scan.c:1744 __cfg80211_bss_update+0x1a1f/0x2030 net/wireless/scan.c:1985
Modules linked in:
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:cfg80211_combine_bsses net/wireless/scan.c:1744 [inline]
RIP: 0010:__cfg80211_bss_update+0x1a1f/0x2030 net/wireless/scan.c:1985
Code: fc fa ff ff e8 d2 6f 88 f6 90 0f 0b 90 49 bd 00 00 00 00 00 fc ff df e9 7b fb ff ff 4c 89 b4 24 98 00 00 00 48 89 6c 24 60 90 <0f> 0b 90 48 8b 7c 24 10 e8 94 87 b1 f9 84 c0 0f 84 9e 00 00 00 e8
RSP: 0018:ffffc90000156d58 EFLAGS: 00010206
RAX: ffff888021e97c10 RBX: ffff888028a63c10 RCX: ffff888021e97810
RDX: ffff88801cacda00 RSI: 0000000000000000 RDI: 0000000000000006
RBP: ffff888021e97890 R08: ffffffff8b170183 R09: 0003000000000000
R10: 0245006400000000 R11: 0000505050505050 R12: ffff888021e97800
R13: 1ffff110043d2f02 R14: 0000000000000000 R15: ffff888028a63c00
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001207 CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 cfg80211_inform_single_bss_data+0xd82/0x2070 net/wireless/scan.c:2330
 cfg80211_inform_bss_data+0x3ce/0x5e80 net/wireless/scan.c:3189
 cfg80211_inform_bss_frame_data+0x3bb/0x720 net/wireless/scan.c:3284
 ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226
 ieee80211_scan_rx+0x526/0x9c0 net/mac80211/scan.c:340
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5232 [inline]
 ieee80211_rx_list+0x2c44/0x3810 net/mac80211/rx.c:5469
 ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5492
 ieee80211_rx include/net/mac80211.h:5166 [inline]
 ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:441
 tasklet_action_common+0x426/0x620 kernel/softirq.c:811
 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
 run_ksoftirqd+0xca/0x130 kernel/softirq.c:950
 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Crashes (11):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/24 23:36 upstream 9b2ffa6148b1 444551c4 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in __cfg80211_bss_update
2024/12/16 11:06 net 922b4b955a03 7cbfbb3a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in __cfg80211_bss_update
2024/07/17 08:54 net-next 58f9416d413a 215bec2d .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-upstream-net-next-test-gce WARNING in __cfg80211_bss_update
2024/12/12 09:56 upstream 231825b2e1ff ff949d25 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in __cfg80211_bss_update
2024/12/04 10:17 upstream ceb8bf2ceaa7 b50eb251 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in __cfg80211_bss_update
2024/08/30 18:58 upstream 20371ba12063 f885a8ff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in __cfg80211_bss_update
2024/07/14 21:00 upstream 4d145e3f830b eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in __cfg80211_bss_update
2024/07/06 01:54 upstream d270dd21bee0 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in __cfg80211_bss_update
2024/07/27 00:22 upstream 2f8c4f506285 46eb10b7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in __cfg80211_bss_update
2024/07/22 17:14 net-next 58f9416d413a df655b64 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-net-next-test-gce WARNING in __cfg80211_bss_update
2024/07/17 07:37 net-next 58f9416d413a 215bec2d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-net-next-test-gce WARNING in __cfg80211_bss_update
* Struck through repros no longer work on HEAD.