Extracting prog: 6m3.133409555s
Minimizing prog: 30m56.8773754s
Simplifying prog options: 9m21.922712934s
Extracting C: 4m27.472058153s
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:6 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}}): socket$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x5, 0x0)
ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "b42a97a659000091dd3f75090045fdda6244570c5740fa8b5aab6700"}})
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:6 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}}): socket$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x5, 0x0)
ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "b42a97a659000091dd3f75090045fdda6244570c5740fa8b5aab6700"}})
program crashed: INFO: task hung in inet_rtm_newaddr
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=6m2.583812505s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): socket$unix
detailed listing:
executing program 0:
socket$unix(0x1, 0x5, 0x0)
program did not crash
testing program (duration=6m2.583812505s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "b42a97a659000091dd3f75090045fdda6244570c5740fa8b5aab6700"}})
program did not crash
testing program (duration=6m2.583812505s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): socket$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x5, 0x0)
ioctl$sock_SIOCETHTOOL(r0, 0x89f0, 0x0)
program did not crash
testing program (duration=6m2.583812505s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): socket$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x5, 0x0)
ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', 0x0})
program did not crash
testing program (duration=6m2.583812505s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): socket$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x5, 0x0)
ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs})
program did not crash
extracting C reproducer
testing compiled C program (duration=6m2.583812505s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): socket$unix-ioctl$sock_SIOCETHTOOL
program crashed: INFO: task hung in inet6_rtm_newaddr
a never seen crash title: INFO: task hung in inet6_rtm_newaddr, ignore
simplifying guilty program options
testing program (duration=6m2.583812505s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 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}}): socket$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x5, 0x0)
ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "b42a97a659000091dd3f75090045fdda6244570c5740fa8b5aab6700"}})
program crashed: INFO: task hung in addrconf_dad_work
a never seen crash title: INFO: task hung in addrconf_dad_work, ignore
testing program (duration=6m2.583812505s, {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}}): socket$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x5, 0x0)
ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "b42a97a659000091dd3f75090045fdda6244570c5740fa8b5aab6700"}})
program crashed: INFO: task hung in wg_netns_pre_exit
a never seen crash title: INFO: task hung in wg_netns_pre_exit, ignore
testing program (duration=6m2.583812505s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): socket$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x5, 0x0)
ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "b42a97a659000091dd3f75090045fdda6244570c5740fa8b5aab6700"}})
program crashed: INFO: task hung in tun_chr_close
validation run: crashed=true
testing program (duration=6m2.583812505s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): socket$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x5, 0x0)
ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "b42a97a659000091dd3f75090045fdda6244570c5740fa8b5aab6700"}})
program crashed: INFO: task hung in tun_chr_close
validation run: crashed=true
testing program (duration=6m2.583812505s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): socket$unix-ioctl$sock_SIOCETHTOOL
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x5, 0x0)
ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f00000000c0)=@ethtool_regs={0x4, 0x0, 0x1c, "b42a97a659000091dd3f75090045fdda6244570c5740fa8b5aab6700"}})
program crashed: INFO: task hung in addrconf_dad_work
validation run: crashed=true
reproducing took 1h4m0.287551908s
repro crashed as (corrupted=false):
INFO: task kworker/u4:21:3509 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:21 state:D stack:25784 pid:3509 tgid:3509 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5260 [inline]
__schedule+0x14ef/0x4fb0 kernel/sched/core.c:6867
__schedule_loop kernel/sched/core.c:6949 [inline]
schedule+0x164/0x360 kernel/sched/core.c:6964
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7021
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
addrconf_dad_work+0x11e/0x14c0 net/ipv6/addrconf.c:4194
process_one_work kernel/workqueue.c:3257 [inline]
process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340
worker_thread+0x89f/0xd90 kernel/workqueue.c:3421
kthread+0x726/0x8b0 kernel/kthread.c:463
ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
INFO: task syz-executor:5484 blocked for more than 151 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21592 pid:5484 tgid:5484 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace:
final repro crashed as (corrupted=false):
INFO: task kworker/u4:21:3509 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:21 state:D stack:25784 pid:3509 tgid:3509 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5260 [inline]
__schedule+0x14ef/0x4fb0 kernel/sched/core.c:6867
__schedule_loop kernel/sched/core.c:6949 [inline]
schedule+0x164/0x360 kernel/sched/core.c:6964
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7021
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
addrconf_dad_work+0x11e/0x14c0 net/ipv6/addrconf.c:4194
process_one_work kernel/workqueue.c:3257 [inline]
process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340
worker_thread+0x89f/0xd90 kernel/workqueue.c:3421
kthread+0x726/0x8b0 kernel/kthread.c:463
ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
INFO: task syz-executor:5484 blocked for more than 151 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21592 pid:5484 tgid:5484 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace: