syzbot


WARNING in __cfg80211_ibss_joined

Status: upstream: reported C repro on 2020/09/24 13:20
Reported-by: syzbot+2da49cf28199dad792b6@syzkaller.appspotmail.com
First crash: 737d, last: 13d
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __cfg80211_ibss_joined 8 942d 961d 0/24 auto-closed as invalid on 2020/07/02 02:22
upstream WARNING in __cfg80211_ibss_joined (2) C error 3865 26d 738d 0/24 upstream: reported C repro on 2020/09/24 09:26
linux-4.19 WARNING in __cfg80211_ibss_joined C 199 9d17h 699d 0/1 upstream: reported C repro on 2020/11/01 17:19

Sample crash report:
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
------------[ cut here ]------------
WARNING: CPU: 0 PID: 2332 at net/wireless/ibss.c:36 __cfg80211_ibss_joined+0x33a/0x3d0 net/wireless/ibss.c:36
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 2332 Comm: kworker/u4:3 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: cfg80211 cfg80211_event_work
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x4b kernel/panic.c:547
 report_bug+0x208/0x249 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:__cfg80211_ibss_joined+0x33a/0x3d0 net/wireless/ibss.c:36
RSP: 0018:ffff8880a1bbfc48 EFLAGS: 00010297
RAX: ffff8880a1bb4240 RBX: ffff8880a0c9cd50 RCX: 1ffff1101437696c
RDX: 0000000000000000 RSI: ffff8880a1bb4b40 RDI: ffff8880a1bb4ac4
RBP: ffff8880a0c9c280 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff11014377f8a
R13: ffff8880a031f118 R14: 0000000000000000 R15: ffff8880a0c9cdc8
 cfg80211_process_wdev_events+0x1f5/0x580 net/wireless/util.c:961
 cfg80211_process_rdev_events+0x63/0xa0 net/wireless/util.c:984
 cfg80211_event_work+0x1a/0x20 net/wireless/core.c:305
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Kernel Offset: disabled
Rebooting in 86400 seconds..

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2022/09/19 08:28 linux-4.14.y 5df8b4735177 5ef9c291 .config log report syz C
ci2-linux-4-14 2022/08/20 07:57 linux-4.14.y b641242202ed 5ef9c291 .config log report syz C
ci2-linux-4-14 2022/07/21 07:26 linux-4.14.y 424a46ea058e 5ef9c291 .config log report syz C
ci2-linux-4-14 2022/06/21 06:57 linux-4.14.y 84bae26850e3 5ef9c291 .config log report syz C
ci2-linux-4-14 2022/05/22 06:26 linux-4.14.y dffb5c6ff09c 5ef9c291 .config log report syz C
ci2-linux-4-14 2022/04/22 01:41 linux-4.14.y 15a1c6b6f516 5ef9c291 .config log report syz C
ci2-linux-4-14 2022/03/23 01:13 linux-4.14.y eb045674aab3 5ef9c291 .config log report syz C
ci2-linux-4-14 2022/02/20 09:35 linux-4.14.y a35d65bedfbc 5ef9c291 .config log report syz C
ci2-linux-4-14 2022/01/21 09:00 linux-4.14.y 4ba8e26127c3 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/12/22 08:28 linux-4.14.y 9dfbac0e6b86 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/11/22 07:59 linux-4.14.y 5f9f3b0057d5 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/10/23 07:29 linux-4.14.y 2760370b1649 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/09/22 13:49 linux-4.14.y 8ea4f73cfa7e 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/08/23 12:42 linux-4.14.y 162b95d01320 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/07/24 12:03 linux-4.14.y 964f3712e6a7 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/06/24 11:27 linux-4.14.y cfb41ef9deb1 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/05/25 05:27 linux-4.14.y 96afcb20f36f 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/04/25 03:44 linux-4.14.y cf256fbcbe34 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/03/25 19:32 linux-4.14.y 670d6552eda8 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/02/23 18:59 linux-4.14.y 3242aa3a635c 5ef9c291 .config log report syz C
ci2-linux-4-14 2021/01/22 09:11 linux-4.14.y 2762b48e9611 5ef9c291 .config log report syz C
ci2-linux-4-14 2020/12/23 08:35 linux-4.14.y 3f2ecb86cb90 5ef9c291 .config log report syz C
ci2-linux-4-14 2020/11/23 07:46 linux-4.14.y 0df445b0f0da 5ef9c291 .config log report syz C
* Struck through repros no longer work on HEAD.
Crashes (12):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/10/05 00:54 linux-4.14.y cbfa1702aaf6 5ef9c291 .config log report syz C
ci2-linux-4-14 2020/09/24 16:55 linux-4.14.y cbfa1702aaf6 54289b08 .config log report syz C
ci2-linux-4-14 2020/10/24 07:20 linux-4.14.y 5b7a52cd2eef 2bb6666c .config log report info
ci2-linux-4-14 2020/10/14 12:25 linux-4.14.y cbfa1702aaf6 fc7735a2 .config log report info
ci2-linux-4-14 2020/10/07 15:36 linux-4.14.y cbfa1702aaf6 1880b4a9 .config log report info
ci2-linux-4-14 2020/10/06 21:54 linux-4.14.y cbfa1702aaf6 1880b4a9 .config log report info
ci2-linux-4-14 2020/10/01 04:40 linux-4.14.y cbfa1702aaf6 a9767fb2 .config log report info
ci2-linux-4-14 2020/09/29 23:06 linux-4.14.y cbfa1702aaf6 5abc3f1a .config log report info
ci2-linux-4-14 2020/09/28 23:28 linux-4.14.y cbfa1702aaf6 1b88c6d5 .config log report info
ci2-linux-4-14 2020/09/25 13:28 linux-4.14.y cbfa1702aaf6 4a006f63 .config log report info
ci2-linux-4-14 2020/09/24 17:20 linux-4.14.y cbfa1702aaf6 54289b08 .config log report info
ci2-linux-4-14 2020/09/24 13:19 linux-4.14.y cbfa1702aaf6 54289b08 .config log report info
* Struck through repros no longer work on HEAD.