syzbot


WARNING in ieee80211_vif_release_channel (2)
Status: upstream: reported C repro on 2021/12/20 07:51
Reported-by: syzbot+11c342e5e30e9539cabd@syzkaller.appspotmail.com
Fix commit: 87a270625a89 mac80211: fix locking in ieee80211_start_ap error path
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-riscv64 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 39d, last: 35d

Cause bisection: introduced by (bisect log) :
commit 0985dba842eaa391858972cfe2724c3c174a2827
Author: David Woodhouse <dwmw@amazon.co.uk>
Date: Sat Oct 23 19:47:19 2021 +0000

  KVM: x86/xen: Fix kvm_xen_has_interrupt() sleeping in kvm_vcpu_block()

Crash: WARNING in ieee80211_vif_release_channel (log)
Repro: C syz .config
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in ieee80211_vif_release_channel 2 236d 238d 0/1 auto-closed as invalid on 2021/10/03 04:56
linux-4.19 WARNING in ieee80211_vif_release_channel (2) 1 98d 98d 0/1 upstream: reported on 2021/10/21 14:28
upstream WARNING in ieee80211_vif_release_channel 3 176d 237d 0/22 auto-closed as invalid on 2021/12/02 06:30
Patch testing requests:
Created Duration User Patch Repo Result
2021/12/20 08:09 11m johannes@sipsolutions.net patch git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git master OK

Sample crash report:

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2021/12/19 15:38 upstream 3f667b5d4053 44068e19 .config log report syz C WARNING in ieee80211_vif_release_channel
ci-upstream-net-this-kasan-gce 2021/12/19 02:06 net 60ec7fcfe768 44068e19 .config log report syz C WARNING in ieee80211_vif_release_channel
ci-upstream-net-kasan-gce 2021/12/19 03:10 net-next f85b244ee395 44068e19 .config log report syz C WARNING in ieee80211_vif_release_channel
ci-upstream-kasan-gce 2021/12/23 11:55 upstream bc491fb12513 6caa12e4 .config log report info WARNING in ieee80211_vif_release_channel
ci-upstream-net-this-kasan-gce 2021/12/19 01:30 net 60ec7fcfe768 44068e19 .config log report info WARNING in ieee80211_vif_release_channel