Extracting prog: 4m51.166689142s
Minimizing prog: 57m27.921282932s
Simplifying prog options: 8m43.131154358s
Extracting C: 3m37.395146406s
Simplifying C: 0s


extracting reproducer from 70 programs
testing a last program of every proc
single: executing 20 programs separately with timeout 6m0s
testing program (duration=6m0s, {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}}): mkdirat-mount-openat-write$vga_arbiter-read$FUSE
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)
read$FUSE(r0, &(0x7f0000000080)={0x2020}, 0x1ca9)

program crashed: INFO: rcu detected stall in corrupted
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program crashed: INFO: rcu detected stall in corrupted
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)

program did not crash
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
write$vga_arbiter(0xffffffffffffffff, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program did not crash
testing program (duration=5m47.314949416s, {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}}): mkdirat-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program did not crash
testing program (duration=5m47.314949416s, {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}}): mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program did not crash
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program did not crash
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program did not crash
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', 0x0, 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program did not crash
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program did not crash
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
program crashed: INFO: rcu detected stall in schedule_timeout
a never seen crash title: INFO: rcu detected stall in schedule_timeout, ignore
simplifying guilty program options
testing program (duration=5m47.314949416s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program crashed: INFO: rcu detected stall in ieee80211_handle_queued_frames
a never seen crash title: INFO: rcu detected stall in ieee80211_handle_queued_frames, ignore
testing program (duration=5m47.314949416s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program crashed: INFO: task hung in reg_process_self_managed_hints
a never seen crash title: INFO: task hung in reg_process_self_managed_hints, ignore
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
reproducing took 1h24m41.862584747s
repro crashed as (corrupted=true):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P30/3:b..l P28/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=15317, q=3205 ncpus=2)
task:rcuc/1          state:D stack:26944 pid:28    tgid:28    ppid:2      task_flags:0x4208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5533 [inline]
 __schedule+0x16d9/0x5700 kernel/sched/core.c:7284
 __schedule_loop kernel/sched/core.c:7361 [inline]
 schedule_rtlock+0x30/0x70 kernel/sched/core.c:7440
 rtlock_slowlock_locked+0x35c9/0x3c20 kernel/locking/rtmutex.c:1895
 rtlock_slowlock kernel/locking/rtmutex.c:1922 [inline]
 rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
 __rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
 rt_spin_lock+0x165/0x400 kernel/locking/spinlock_rt.c:57
 spin_lock include/linux/spinlock_rt.h:45 [inline]
 tasklet_lock_callback kernel/softirq.c:900 [inline]
 tasklet_action_common+0xc5/0x600 kernel/softirq.c:950
 handle_softirqs+0x1da/0x6d0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 __local_bh_enable_ip+0x16f/0x2b0 kernel/softirq.c:325
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_do_batch kernel/rcu/tree.c:2669 [inline]
 rcu_core kernel/rcu/tree.c:2919 [inline]
 rcu_cpu_kthread+0xb6c/0x1740 kernel/rcu/tree.c:3007
 smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
 kthread+0x38b/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
task:ksoftirqd/1     state:R  running task     stack:22424 pid:30    tgid:30    ppid:2      task_flags:0x4208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5533 [inline]
 __schedule+0x16d9/0x5700 kernel/sched/core.c:7284
 preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7463
 preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
 class_preempt_destructor include/linux/preempt.h:496 [inline]
 raw_spin_unlock_irq_wake include/linux/sched/wake_q.h:89 [inline]
 rtlock_slowlock_locked+0x365d/0x3c20 kernel/locking/rtmutex.c:1891
 rtlock_slowlock kernel/locking/rtmutex.c:1922 [inline]
 rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
 __rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
 rt_spin_lock+0x165/0x400 kernel/locking/spinlock_rt.c:57
 spin_lock_bh include/linux/spinlock_rt.h:90 [inline]
 cfg80211_inform_single_bss_data+0xc22/0x1bf0 net/wireless/scan.c:2441
 cfg80211_inform_bss_data+0x263/0x3cc0 net/wireless/scan.c:3302
 cfg80211_inform_bss_frame_data+0x3c7/0x840 net/wireless/scan.c:3394
 ieee80211_bss_info_update+0x791/0xa50 net/mac80211/scan.c:230
 ieee80211_scan_rx+0x552/0xa40 net/mac80211/scan.c:364
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5433 [inline]
 ieee80211_rx_list+0x2d23/0x3b40 net/mac80211/rx.c:5726
 ieee80211_rx_napi+0x1ad/0x3d0 net/mac80211/rx.c:5749
 ieee80211_rx include/net/mac80211.h:5449 [inline]
 ieee80211_handle_queued_frames+0xe4/0x1d0 net/mac80211/main.c:452
 tasklet_action_common+0x31c/0x600 kernel/softirq.c:961
 handle_softirqs+0x1da/0x6d0 kernel/softirq.c:645
 run_ksoftirqd+0x53/0x190 kernel/softirq.c:1099
 smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
 kthread+0x38b/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

report is corrupted, running repro again
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program crashed: INFO: rcu detected stall in corrupted
report is corrupted, running repro again
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program crashed: INFO: rcu detected stall in corrupted
report is corrupted, running repro again
testing program (duration=5m47.314949416s, {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}}): mkdirat-mount-openat-write$vga_arbiter
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000100)='tracefs\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./trace/set_event\x00', 0x2, 0x0)
write$vga_arbiter(r0, &(0x7f00000000c0)=@other={'lock', ' ', 'none'}, 0xa)

program crashed: INFO: rcu detected stall in corrupted
final repro crashed as (corrupted=true):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P1165/2:b..l P15/5:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=14333, q=2444 ncpus=2)
task:ksoftirqd/0     state:R  running task     stack:22136 pid:15    tgid:15    ppid:2      task_flags:0x4208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5533 [inline]
 __schedule+0x16d9/0x5700 kernel/sched/core.c:7284
 preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7463
 preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
 class_preempt_destructor include/linux/preempt.h:496 [inline]
 raw_spin_unlock_irqrestore_wake include/linux/sched/wake_q.h:102 [inline]
 rtlock_slowlock kernel/locking/rtmutex.c:1923 [inline]
 rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
 __rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
 rt_spin_lock+0x31a/0x400 kernel/locking/spinlock_rt.c:57
 spin_lock_bh include/linux/spinlock_rt.h:90 [inline]
 ieee80211_rx_handlers+0x120/0xca10 net/mac80211/rx.c:4254
 ieee80211_invoke_rx_handlers+0xe9a/0x2a00 net/mac80211/rx.c:4320
 ieee80211_prepare_and_rx_handle+0xe04/0x4b30 net/mac80211/rx.c:-1
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5553 [inline]
 ieee80211_rx_list+0x2e99/0x3b40 net/mac80211/rx.c:5726
 ieee80211_rx_napi+0x1ad/0x3d0 net/mac80211/rx.c:5749
 ieee80211_rx include/net/mac80211.h:5449 [inline]
 ieee80211_handle_queued_frames+0xe4/0x1d0 net/mac80211/main.c:452
 tasklet_action_common+0x31c/0x600 kernel/softirq.c:961
 handle_softirqs+0x1da/0x6d0 kernel/softirq.c:645
 run_ksoftirqd+0x53/0x190 kernel/softirq.c:1099
 smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
 kthread+0x38b/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
task:kworker/u8:11   state:D stack:21696 pid:1165  tgid:1165  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound nsim_dev_trap_report_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5533 [inline]
 __schedule+0x16d9/0x5700 kernel/sched/core.c:7284
 __schedule_loop kernel/sched/core.c:7361 [inline]
 schedule_rtlock+0x30/0x70 kernel/sched/core.c:7440
 rtlock_slowlock_locked+0x35c9/0x3c20 kernel/locking/rtmutex.c:1895
 rtlock_slowlock kernel/locking/rtmutex.c:1922 [inline]
 rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
 __rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
 rt_spin_lock+0x165/0x400 kernel/locking/spinlock_rt.c:57
 spin_lock include/linux/spinlock_rt.h:45 [inline]
 tasklet_lock_callback kernel/softirq.c:900 [inline]
 tasklet_action_common+0xc5/0x600 kernel/softirq.c:950
 handle_softirqs+0x1da/0x6d0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 __local_bh_enable_ip+0x16f/0x2b0 kernel/softirq.c:325
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 spin_unlock_bh include/linux/spinlock_rt.h:122 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:816 [inline]
 nsim_dev_trap_report_work+0x871/0xcb0 drivers/net/netdevsim/dev.c:847
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
 kthread+0x38b/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>