Extracting prog: 36.824741511s
Minimizing prog: 39m46.085082964s
Simplifying prog options: 4m9.675903678s
Extracting C: 1m47.24338392s
Simplifying C: 0s


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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_create-timer_settime-socket$inet_mptcp-openat$dsp-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCNEWUNIT-ioctl$PPPIOCSACTIVE-ioctl$KVM_CREATE_VCPU
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
r5 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
socket$inet_mptcp(0x2, 0x1, 0x106)
r6 = openat$dsp(0xffffffffffffff9c, &(0x7f0000000000), 0x42, 0x0)
write$dsp(r6, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCNEWUNIT(r0, 0xc004743e, &(0x7f0000000000))
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})
ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x2)

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
single: successfully extracted reproducer
found reproducer with 22 syscalls
minimizing guilty program
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_create-timer_settime-socket$inet_mptcp-openat$dsp-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCNEWUNIT-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
r5 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
socket$inet_mptcp(0x2, 0x1, 0x106)
r6 = openat$dsp(0xffffffffffffff9c, &(0x7f0000000000), 0x42, 0x0)
write$dsp(r6, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCNEWUNIT(r0, 0xc004743e, &(0x7f0000000000))
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in bt_tags_iter
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_create-timer_settime-socket$inet_mptcp-openat$dsp-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCNEWUNIT
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
r5 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
socket$inet_mptcp(0x2, 0x1, 0x106)
r6 = openat$dsp(0xffffffffffffff9c, &(0x7f0000000000), 0x42, 0x0)
write$dsp(r6, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCNEWUNIT(r0, 0xc004743e, &(0x7f0000000000))

program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_create-timer_settime-socket$inet_mptcp-openat$dsp-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
r5 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
socket$inet_mptcp(0x2, 0x1, 0x106)
r6 = openat$dsp(0xffffffffffffff9c, &(0x7f0000000000), 0x42, 0x0)
write$dsp(r6, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_create-timer_settime-socket$inet_mptcp-openat$dsp-write$dsp-ioctl$NBD_DO_IT-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
r5 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
socket$inet_mptcp(0x2, 0x1, 0x106)
r6 = openat$dsp(0xffffffffffffff9c, &(0x7f0000000000), 0x42, 0x0)
write$dsp(r6, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_create-timer_settime-socket$inet_mptcp-openat$dsp-write$dsp-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
r5 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
socket$inet_mptcp(0x2, 0x1, 0x106)
r6 = openat$dsp(0xffffffffffffff9c, &(0x7f0000000000), 0x42, 0x0)
write$dsp(r6, &(0x7f00000001c0), 0x0)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_create-timer_settime-socket$inet_mptcp-openat$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
r5 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
socket$inet_mptcp(0x2, 0x1, 0x106)
openat$dsp(0xffffffffffffff9c, &(0x7f0000000000), 0x42, 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_create-timer_settime-socket$inet_mptcp-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
r5 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
socket$inet_mptcp(0x2, 0x1, 0x106)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in bt_tags_iter
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
r5 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_create-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
r5 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc))
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
gettid()
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
ioctl$SNDRV_TIMER_IOCTL_START(r4, 0x54a0)
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r4, 0x40345410, &(0x7f0000000400)={{0x3}})
r5 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r5}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-openat$sndtimer-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000040), 0x0)
r4 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r4}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-ioctl$SNDRV_TIMER_IOCTL_START-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
ioctl$SNDRV_TIMER_IOCTL_START(r3, 0x54a0)
r4 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r4}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in bt_tags_iter
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r3, 0x40345410, 0x0)
r4 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r4}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-openat$sndtimer-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
r3 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r3}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r3 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r3}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r2=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r1, 0xab00, r2)
r3 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r3}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040))
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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}}): openat$ppp-syz_open_dev$ndb-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
r1 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
ioctl$NBD_SET_SOCK(r1, 0xab00, 0xffffffffffffffff)
ioctl$NBD_SET_SIZE_BLOCKS(r1, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r1, 0xab03)
ioctl$NBD_CLEAR_SOCK(r1, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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}}): openat$ppp-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(0xffffffffffffffff, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(0xffffffffffffffff, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(0xffffffffffffffff, 0xab03)
ioctl$NBD_CLEAR_SOCK(0xffffffffffffffff, 0xab04)
ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
testing program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(0x0, 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, 0x0)
ioctl$NBD_SET_SOCK(r0, 0xab00, 0xffffffffffffffff)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r1 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r1}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
gettid()
timer_create(0x0, 0x0, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, 0x0)
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, 0x0, 0x0)
write$dsp(0xffffffffffffffff, &(0x7f00000001c0), 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program did not crash
testing program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, 0x0, 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, &(0x7f0000000080)={0x2085, &(0x7f00000001c0)=[{0x5, 0xd4, 0x9, 0x9}]})

program crashed: WARNING: refcount bug in bt_tags_iter
testing program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, 0x0, 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, 0x0)

program crashed: WARNING: refcount bug in bt_tags_iter
extracting C reproducer
testing compiled C program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
program crashed: WARNING: refcount bug in blk_done_softirq
a never seen crash title: WARNING: refcount bug in blk_done_softirq, ignore
simplifying guilty program options
testing program (duration=47.450002008s, {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}}): syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, 0x0, 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, 0x0)

program did not crash
testing program (duration=47.450002008s, {Threaded:true 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}}): syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, 0x0, 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, 0x0)

program did not crash
testing program (duration=47.450002008s, {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}}): syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, 0x0, 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, 0x0)

program did not crash
testing program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, 0x0, 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, 0x0)

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
validation run: crashed=true
testing program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, 0x0, 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, 0x0)

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
validation run: crashed=true
testing program (duration=47.450002008s, {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_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_SET_SIZE_BLOCKS-gettid-timer_create-timer_settime-write$dsp-ioctl$NBD_DO_IT-ioctl$NBD_CLEAR_SOCK-ioctl$PPPIOCSACTIVE
detailed listing:
executing program 0:
r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r1=>0xffffffffffffffff})
ioctl$NBD_SET_SOCK(r0, 0xab00, r1)
ioctl$NBD_SET_SIZE_BLOCKS(r0, 0xab07, 0x4)
r2 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r2}, &(0x7f0000bbdffc))
timer_settime(0x0, 0x0, &(0x7f00000002c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
write$dsp(0xffffffffffffffff, 0x0, 0x0)
ioctl$NBD_DO_IT(r0, 0xab03)
ioctl$NBD_CLEAR_SOCK(r0, 0xab04)
ioctl$PPPIOCSACTIVE(0xffffffffffffffff, 0x40107446, 0x0)

program crashed: WARNING: refcount bug in blk_mq_dispatch_rq_list
validation run: crashed=true
reproducing took 49m48.429837203s
repro crashed as (corrupted=false):
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 0 PID: 1202 at lib/refcount.c:28 refcount_warn_saturate+0x11b/0x1a0 lib/refcount.c:28
Modules linked in:
CPU: 0 PID: 1202 Comm: kworker/0:1H Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: kblockd blk_mq_run_work_fn
RIP: 0010:refcount_warn_saturate+0x11b/0x1a0 lib/refcount.c:28
Code: 09 01 48 c7 c7 a0 6b 59 8a e8 81 b2 c3 05 0f 0b eb c4 e8 18 f5 9c fd c6 05 2d 20 7b 09 01 48 c7 c7 00 6c 59 8a e8 65 b2 c3 05 <0f> 0b eb a8 e8 fc f4 9c fd c6 05 0e 20 7b 09 01 48 c7 c7 40 6b 59
RSP: 0018:ffffc900055777e8 EFLAGS: 00010246
RAX: 0ac2924acc203c00 RBX: 0000000000000003 RCX: ffff88802222d940
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90005577990 R08: dffffc0000000000 R09: ffffed10172067b0
R10: ffffed10172067b0 R11: 1ffff110172067af R12: ffffc90005577aa0
R13: ffff8880210cfa50 R14: 0000000000000003 R15: 1ffff11004219f49
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006d02000 CR3: 000000001a9bb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 blk_mq_end_request block/blk-mq.c:577 [inline]
 blk_mq_dispatch_rq_list+0xb8b/0x1dd0 block/blk-mq.c:1408
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:200 [inline]
 blk_mq_do_dispatch_sched+0xabc/0xc40 block/blk-mq-sched.c:214
 __blk_mq_sched_dispatch_requests+0x311/0x3f0 block/blk-mq-sched.c:-1
 blk_mq_sched_dispatch_requests+0xf4/0x1b0 block/blk-mq-sched.c:366
 __blk_mq_run_hw_queue+0xbb/0xf0 block/blk-mq.c:1511
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 0 PID: 1202 at lib/refcount.c:28 refcount_warn_saturate+0x11b/0x1a0 lib/refcount.c:28
Modules linked in:
CPU: 0 PID: 1202 Comm: kworker/0:1H Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: kblockd blk_mq_run_work_fn
RIP: 0010:refcount_warn_saturate+0x11b/0x1a0 lib/refcount.c:28
Code: 09 01 48 c7 c7 a0 6b 59 8a e8 81 b2 c3 05 0f 0b eb c4 e8 18 f5 9c fd c6 05 2d 20 7b 09 01 48 c7 c7 00 6c 59 8a e8 65 b2 c3 05 <0f> 0b eb a8 e8 fc f4 9c fd c6 05 0e 20 7b 09 01 48 c7 c7 40 6b 59
RSP: 0018:ffffc900055777e8 EFLAGS: 00010246
RAX: 0ac2924acc203c00 RBX: 0000000000000003 RCX: ffff88802222d940
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90005577990 R08: dffffc0000000000 R09: ffffed10172067b0
R10: ffffed10172067b0 R11: 1ffff110172067af R12: ffffc90005577aa0
R13: ffff8880210cfa50 R14: 0000000000000003 R15: 1ffff11004219f49
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006d02000 CR3: 000000001a9bb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 blk_mq_end_request block/blk-mq.c:577 [inline]
 blk_mq_dispatch_rq_list+0xb8b/0x1dd0 block/blk-mq.c:1408
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:200 [inline]
 blk_mq_do_dispatch_sched+0xabc/0xc40 block/blk-mq-sched.c:214
 __blk_mq_sched_dispatch_requests+0x311/0x3f0 block/blk-mq-sched.c:-1
 blk_mq_sched_dispatch_requests+0xf4/0x1b0 block/blk-mq-sched.c:366
 __blk_mq_run_hw_queue+0xbb/0xf0 block/blk-mq.c:1511
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>