Extracting prog: 11m11.802875495s
Minimizing prog: 38m33.858113661s
Simplifying prog options: 8m40.839734553s
Extracting C: 4m21.630212597s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x89f6, &(0x7f0000000580)={'bridge0\x00', &(0x7f00000005c0)=@ethtool_regs={0x4, 0x0, 0x1d, "2a161d2d71db37f20a8f1597f02515fcead4e1f5cad54790db5c4e0999"}})

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x89f6, &(0x7f0000000580)={'bridge0\x00', &(0x7f00000005c0)=@ethtool_regs={0x4, 0x0, 0x1d, "2a161d2d71db37f20a8f1597f02515fcead4e1f5cad54790db5c4e0999"}})

program did not crash
single: failed to extract reproducer
single: executing 1 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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x89f6, &(0x7f0000000580)={'bridge0\x00', &(0x7f00000005c0)=@ethtool_regs={0x4, 0x0, 0x1d, "2a161d2d71db37f20a8f1597f02515fcead4e1f5cad54790db5c4e0999"}})

program crashed: no output from test machine
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
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}}): socketpair$unix
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540))

program did not crash
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}}): ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
ioctl$sock_SIOCETHTOOL(0xffffffffffffffff, 0x89f6, &(0x7f0000000580)={'bridge0\x00', &(0x7f00000005c0)=@ethtool_regs={0x4, 0x0, 0x1d, "2a161d2d71db37f20a8f1597f02515fcead4e1f5cad54790db5c4e0999"}})

program did not crash
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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, 0x0)
ioctl$sock_SIOCETHTOOL(0xffffffffffffffff, 0x89f6, &(0x7f0000000580)={'bridge0\x00', &(0x7f00000005c0)=@ethtool_regs={0x4, 0x0, 0x1d, "2a161d2d71db37f20a8f1597f02515fcead4e1f5cad54790db5c4e0999"}})

program did not crash
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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x89f6, 0x0)

program did not crash
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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x89f6, &(0x7f0000000580)={'bridge0\x00', 0x0})

program did not crash
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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x89f6, &(0x7f0000000580)={'bridge0\x00', &(0x7f00000005c0)=@ethtool_regs})

program did not crash
extracting C reproducer
testing compiled C 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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
program crashed: INFO: task hung in addrconf_dad_work
a never seen crash title: INFO: task hung in addrconf_dad_work, ignore
simplifying guilty program options
testing program (duration=6m0s, {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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x89f6, &(0x7f0000000580)={'bridge0\x00', &(0x7f00000005c0)=@ethtool_regs={0x4, 0x0, 0x1d, "2a161d2d71db37f20a8f1597f02515fcead4e1f5cad54790db5c4e0999"}})

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=6m0s, {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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x89f6, &(0x7f0000000580)={'bridge0\x00', &(0x7f00000005c0)=@ethtool_regs={0x4, 0x0, 0x1d, "2a161d2d71db37f20a8f1597f02515fcead4e1f5cad54790db5c4e0999"}})

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=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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x89f6, &(0x7f0000000580)={'bridge0\x00', &(0x7f00000005c0)=@ethtool_regs={0x4, 0x0, 0x1d, "2a161d2d71db37f20a8f1597f02515fcead4e1f5cad54790db5c4e0999"}})

program crashed: INFO: task hung in linkwatch_event
validation run: crashed=true
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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x89f6, &(0x7f0000000580)={'bridge0\x00', &(0x7f00000005c0)=@ethtool_regs={0x4, 0x0, 0x1d, "2a161d2d71db37f20a8f1597f02515fcead4e1f5cad54790db5c4e0999"}})

program crashed: INFO: task hung in reg_process_self_managed_hints
validation run: crashed=true
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}}): socketpair$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000540)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCETHTOOL(r0, 0x89f6, &(0x7f0000000580)={'bridge0\x00', &(0x7f00000005c0)=@ethtool_regs={0x4, 0x0, 0x1d, "2a161d2d71db37f20a8f1597f02515fcead4e1f5cad54790db5c4e0999"}})

program crashed: INFO: task hung in addrconf_dad_work
validation run: crashed=true
reproducing took 1h13m30.5814209s
repro crashed as (corrupted=false):
INFO: task kworker/u8:8:1354 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:8    state:D stack:24392 pid:1354  tgid:1354  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7531
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7c4/0x15a0 kernel/locking/mutex.c:821
 rtnl_net_lock include/linux/rtnetlink.h:134 [inline]
 addrconf_dad_work+0x116/0x15c0 net/ipv6/addrconf.c:4255
 process_one_work kernel/workqueue.c:3495 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3659
 kthread+0x38b/0x480 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>
INFO: task syz-executor:5859 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21648 pid:5859  tgid:5859  ppid:5851   task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7531
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7c4/0x15a0 kernel/locking/mutex.c:821
 rtnl_lock net/core/rtnetlink.c:80 [inline]
 rtnl_nets_lock net/core/rtnetlink.c:366 [inline]
 rtnl_newlink+0xc1d/0x1c30 net/core/rtnetlink.c:4251

final repro crashed as (corrupted=false):
INFO: task kworker/u8:8:1354 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:8    state:D stack:24392 pid:1354  tgid:1354  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7531
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7c4/0x15a0 kernel/locking/mutex.c:821
 rtnl_net_lock include/linux/rtnetlink.h:134 [inline]
 addrconf_dad_work+0x116/0x15c0 net/ipv6/addrconf.c:4255
 process_one_work kernel/workqueue.c:3495 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3659
 kthread+0x38b/0x480 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>
INFO: task syz-executor:5859 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21648 pid:5859  tgid:5859  ppid:5851   task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7531
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7c4/0x15a0 kernel/locking/mutex.c:821
 rtnl_lock net/core/rtnetlink.c:80 [inline]
 rtnl_nets_lock net/core/rtnetlink.c:366 [inline]
 rtnl_newlink+0xc1d/0x1c30 net/core/rtnetlink.c:4251