Extracting prog: 1m32.74810568s
Minimizing prog: 6m42.908086989s
Simplifying prog options: 0s
Extracting C: 1m15.629748192s
Simplifying C: 5m44.741666769s


extracting reproducer from 30 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
detailed listing:
executing program 0:
sendmsg$netlink(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000002d40)=[{0x0}], 0x1, 0x0, 0x0, 0x24000081}, 0x24048800)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8b30, &(0x7f0000000040)={'wlan0\x00'})

program crashed: WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap
detailed listing:
executing program 0:
sendmsg$netlink(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000002d40)=[{0x0}], 0x1, 0x0, 0x0, 0x24000081}, 0x24048800)
syz_init_net_socket$bt_l2cap(0x1f, 0x2, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-ioctl$sock_SIOCGIFINDEX_80211
detailed listing:
executing program 0:
sendmsg$netlink(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000002d40)=[{0x0}], 0x1, 0x0, 0x0, 0x24000081}, 0x24048800)
ioctl$sock_SIOCGIFINDEX_80211(0xffffffffffffffff, 0x8b30, &(0x7f0000000040)={'wlan0\x00'})

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8b30, &(0x7f0000000040)={'wlan0\x00'})

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
detailed listing:
executing program 0:
sendmsg$netlink(0xffffffffffffffff, 0x0, 0x24048800)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8b30, &(0x7f0000000040)={'wlan0\x00'})

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
detailed listing:
executing program 0:
sendmsg$netlink(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x24000081}, 0x24048800)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8b30, &(0x7f0000000040)={'wlan0\x00'})

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
detailed listing:
executing program 0:
sendmsg$netlink(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000002d40)=[{0x0}], 0x1, 0x0, 0x0, 0x24000081}, 0x24048800)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8b30, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
program crashed: WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
simplifying C reproducer
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
program crashed: WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
program crashed: WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
program crashed: WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
program did not crash
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
program crashed: WARNING: lock held when returning to user space!
a never seen crash title: WARNING: lock held when returning to user space!, ignore
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
program crashed: WARNING: lock held when returning to user space!
a never seen crash title: WARNING: lock held when returning to user space!, ignore
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
program did not crash
testing program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
detailed listing:
executing program 0:
sendmsg$netlink(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000002d40)=[{0x0}], 0x1, 0x0, 0x0, 0x24000081}, 0x24048800)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8b30, &(0x7f0000000040)={'wlan0\x00'})

program crashed: WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
detailed listing:
executing program 0:
sendmsg$netlink(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000002d40)=[{0x0}], 0x1, 0x0, 0x0, 0x24000081}, 0x24048800)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8b30, &(0x7f0000000040)={'wlan0\x00'})

program crashed: WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$netlink-syz_init_net_socket$bt_l2cap-ioctl$sock_SIOCGIFINDEX_80211
detailed listing:
executing program 0:
sendmsg$netlink(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000002d40)=[{0x0}], 0x1, 0x0, 0x0, 0x24000081}, 0x24048800)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8b30, &(0x7f0000000040)={'wlan0\x00'})

program crashed: WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
validation run: crashed=true
reproducing took 17m57.061282639s
repro crashed as (corrupted=false):
================================================
WARNING: lock held when returning to user space!
syzkaller #0 Not tainted
------------------------------------------------
syz.0.17/4463 is leaving the kernel with locks still held!
1 lock held by syz.0.17/4463:
 #0: ffff888027e94d40 (&wdev->mtx){+.+.}-{3:3}, at: wdev_lock net/wireless/core.h:231 [inline]
 #0: ffff888027e94d40 (&wdev->mtx){+.+.}-{3:3}, at: cfg80211_wext_siwgenie+0xd4/0x3f0 net/wireless/wext-sme.c:340

final repro crashed as (corrupted=false):
================================================
WARNING: lock held when returning to user space!
syzkaller #0 Not tainted
------------------------------------------------
syz.0.17/4463 is leaving the kernel with locks still held!
1 lock held by syz.0.17/4463:
 #0: ffff888027e94d40 (&wdev->mtx){+.+.}-{3:3}, at: wdev_lock net/wireless/core.h:231 [inline]
 #0: ffff888027e94d40 (&wdev->mtx){+.+.}-{3:3}, at: cfg80211_wext_siwgenie+0xd4/0x3f0 net/wireless/wext-sme.c:340