Extracting prog: 5m38.63849165s
Minimizing prog: 1h0m36.61718677s
Simplifying prog options: 0s
Extracting C: 3m4.847658075s
Simplifying C: 38m31.709354907s
extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
pwrite64(r0, &(0x7f00000000c0)="02", 0x1, 0x4)
program crashed: INFO: task hung in jbd2_journal_commit_transaction
program crashed: INFO: task hung in do_get_write_access
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
pwrite64(0xffffffffffffffff, &(0x7f00000000c0)="02", 0x1, 0x4)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-openat-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
pwrite64(r0, &(0x7f00000000c0)="02", 0x1, 0x4)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount-openat-pwrite64
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
pwrite64(r0, &(0x7f00000000c0)="02", 0x1, 0x4)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
pwrite64(r0, &(0x7f00000000c0)="02", 0x1, 0x4)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
pwrite64(r0, &(0x7f00000000c0)="02", 0x1, 0x4)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
pwrite64(r0, &(0x7f00000000c0)="02", 0x1, 0x4)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0)
pwrite64(r0, &(0x7f00000000c0)="02", 0x1, 0x4)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
pwrite64(r0, 0x0, 0x0, 0x4)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
pwrite64(r0, &(0x7f00000000c0), 0x0, 0x4)
program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in do_get_write_access
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in do_get_write_access
testing compiled C program (duration=6m0s, {Threaded:false 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in jbd2_journal_commit_transaction
a never seen crash title: INFO: task hung in jbd2_journal_commit_transaction, ignore
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in __rq_qos_throttle
a never seen crash title: INFO: task hung in __rq_qos_throttle, ignore
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in do_get_write_access
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in do_get_write_access
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in do_get_write_access
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in __rq_qos_throttle
a never seen crash title: INFO: task hung in __rq_qos_throttle, ignore
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in do_get_write_access
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in do_get_write_access
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in jbd2_journal_commit_transaction
a never seen crash title: INFO: task hung in jbd2_journal_commit_transaction, ignore
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in do_get_write_access
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
program crashed: INFO: task hung in do_get_write_access
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
pwrite64(r0, &(0x7f00000000c0)="02", 0x1, 0x4)
program crashed: INFO: task hung in jbd2_journal_commit_transaction
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
pwrite64(r0, &(0x7f00000000c0)="02", 0x1, 0x4)
program crashed: INFO: task hung in do_get_write_access
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-pwrite64
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/pci/devices/0000:00:03.0/config\x00', 0x2, 0x0)
pwrite64(r0, &(0x7f00000000c0)="02", 0x1, 0x4)
program crashed: INFO: task hung in jbd2_journal_commit_transaction
validation run: crashed=true
reproducing took 1h56m29.096632639s
repro crashed as (corrupted=false):
INFO: task jbd2/sda1-8:73 blocked for more than 122 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:0 pid:73 tgid:73 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
__wait_on_buffer+0x5a/0x70 fs/buffer.c:123
wait_on_buffer include/linux/buffer_head.h:422 [inline]
jbd2_journal_commit_transaction+0x2dba/0x5510 fs/jbd2/commit.c:814
kjournald2+0x386/0x6a0 fs/jbd2/journal.c:201
kthread+0x2c7/0x360 kernel/kthread.c:389
ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task kworker/u8:4:347 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:4 state:D stack:0 pid:347 tgid:347 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x558/0xd70 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x268/0x3d0 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1b6/0x6a0 fs/ext4/ext4_jbd2.c:239
ext4_mb_mark_context+0x393/0xee0 fs/ext4/mballoc.c:4107
ext4_mb_mark_diskspace_used+0x3aa/0x830 fs/ext4/mballoc.c:4223
ext4_mb_new_blocks+0x840/0x36c0 fs/ext4/mballoc.c:6318
ext4_ext_map_blocks+0x14d9/0x6080 fs/ext4/extents.c:4437
ext4_map_create_blocks fs/ext4/inode.c:520 [inline]
ext4_map_blocks+0x873/0x17f0 fs/ext4/inode.c:706
mpage_map_one_extent fs/ext4/inode.c:2222 [inline]
mpage_map_and_submit_extent fs/ext4/inode.c:2275 [inline]
ext4_do_writepages+0x1c4a/0x39f0 fs/ext4/inode.c:2738
ext4_writepages+0x28c/0x550 fs/ext4/inode.c:2827
do_writepages+0x3d7/0x7f0 mm/page-writeback.c:2690
__writeback_single_inode+0xc8/0xba0 fs/fs-writeback.c:1674
writeback_sb_inodes+0x6a5/0xfb0 fs/fs-writeback.c:1970
__writeback_inodes_wb+0x129/0x280 fs/fs-writeback.c:2041
wb_writeback+0x3bb/0x850 fs/fs-writeback.c:2152
wb_check_old_data_flush fs/fs-writeback.c:2256 [inline]
wb_do_writeback fs/fs-writeback.c:2309 [inline]
wb_workfn+0xa03/0xef0 fs/fs-writeback.c:2337
process_one_work kernel/workqueue.c:3273 [inline]
process_scheduled_works+0x7f7/0x1060 kernel/workqueue.c:3354
worker_thread+0xc99/0x13f0 kernel/workqueue.c:3435
kthread+0x2c7/0x360 kernel/kthread.c:389
ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.4.494:873 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.494 state:D stack:0 pid:873 tgid:873 ppid:380 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x558/0xd70 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x268/0x3d0 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1b6/0x6a0 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x1f6/0x2e0 fs/ext4/inode.c:5892
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6066
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6103
__mark_inode_dirty+0x24e/0xc50 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2056 [inline]
inode_update_time fs/inode.c:2069 [inline]
__file_update_time fs/inode.c:2258 [inline]
file_update_time+0x1d3/0x210 fs/inode.c:2288
ext4_page_mkwrite+0x2bf/0x1120 fs/ext4/inode.c:6221
do_page_mkwrite mm/memory.c:3263 [inline]
do_shared_fault mm/memory.c:5537 [inline]
do_fault mm/memory.c:5599 [inline]
do_pte_missing+0x12c4/0x4440 mm/memory.c:4069
handle_pte_fault mm/memory.c:5940 [inline]
__handle_mm_fault mm/memory.c:6083 [inline]
handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
do_user_addr_fault+0x951/0x1230 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1479 [inline]
exc_page_fault+0x58/0xc0 arch/x86/mm/fault.c:1534
asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f114046ba23
RSP: 002b:00007fff39c597b0 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34124000 RSI: 0000000000040000 RDI: 00007f11407e0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007fff39c59a40
INFO: task syz.0.492:874 blocked for more than 124 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.492 state:D stack:0 pid:874 tgid:874 ppid:383 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x558/0xd70 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x268/0x3d0 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1b6/0x6a0 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x1f6/0x2e0 fs/ext4/inode.c:5892
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6066
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6103
__mark_inode_dirty+0x24e/0xc50 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2056 [inline]
inode_update_time fs/inode.c:2069 [inline]
__file_update_time fs/inode.c:2258 [inline]
file_update_time+0x1d3/0x210 fs/inode.c:2288
ext4_page_mkwrite+0x2bf/0x1120 fs/ext4/inode.c:6221
do_page_mkwrite mm/memory.c:3263 [inline]
do_shared_fault mm/memory.c:5537 [inline]
do_fault mm/memory.c:5599 [inline]
do_pte_missing+0x12c4/0x4440 mm/memory.c:4069
handle_pte_fault mm/memory.c:5940 [inline]
__handle_mm_fault mm/memory.c:6083 [inline]
handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
do_user_addr_fault+0x951/0x1230 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1479 [inline]
exc_page_fault+0x58/0xc0 arch/x86/mm/fault.c:1534
asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f9cb266ba23
RSP: 002b:00007ffe125cfa90 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34624000 RSI: 0000000000040000 RDI: 00007f9cb29e0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffe125cfd20
INFO: task syz.3.495:875 blocked for more than 124 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.495 state:D stack:0 pid:875 tgid:875 ppid:384 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x558/0xd70 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x268/0x3d0 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1b6/0x6a0 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x1f6/0x2e0 fs/ext4/inode.c:5892
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6066
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6103
__mark_inode_dirty+0x24e/0xc50 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2056 [inline]
inode_update_time fs/inode.c:2069 [inline]
__file_update_time fs/inode.c:2258 [inline]
file_update_time+0x1d3/0x210 fs/inode.c:2288
ext4_page_mkwrite+0x2bf/0x1120 fs/ext4/inode.c:6221
do_page_mkwrite mm/memory.c:3263 [inline]
do_shared_fault mm/memory.c:5537 [inline]
do_fault mm/memory.c:5599 [inline]
do_pte_missing+0x12c4/0x4440 mm/memory.c:4069
handle_pte_fault mm/memory.c:5940 [inline]
__handle_mm_fault mm/memory.c:6083 [inline]
handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
do_user_addr_fault+0x951/0x1230 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1479 [inline]
exc_page_fault+0x58/0xc0 arch/x86/mm/fault.c:1534
asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ffa67c6ba23
RSP: 002b:00007fff83343390 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34924000 RSI: 0000000000040000 RDI: 00007ffa67fe0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007fff83343620
INFO: task syz.1.493:876 blocked for more than 124 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.493 state:D stack:0 pid:876 tgid:876 ppid:382 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x558/0xd70 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x268/0x3d0 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1b6/0x6a0 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x1f6/0x2e0 fs/ext4/inode.c:5892
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6066
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6103
__mark_inode_dirty+0x24e/0xc50 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2056 [inline]
inode_update_time fs/inode.c:2069 [inline]
__file_update_time fs/inode.c:2258 [inline]
file_update_time+0x1d3/0x210 fs/inode.c:2288
ext4_page_mkwrite+0x2bf/0x1120 fs/ext4/inode.c:6221
do_page_mkwrite mm/memory.c:3263 [inline]
do_shared_fault mm/memory.c:5537 [inline]
do_fault mm/memory.c:5599 [inline]
do_pte_missing+0x12c4/0x4440 mm/memory.c:4069
handle_pte_fault mm/memory.c:5940 [inline]
__handle_mm_fault mm/memory.c:6083 [inline]
handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
do_user_addr_fault+0x951/0x1230 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1479 [inline]
exc_page_fault+0x58/0xc0 arch/x86/mm/fault.c:1534
asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ffb81e6ba23
RSP: 002b:00007fff36cccfc0 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34724000 RSI: 0000000000040000 RDI: 00007ffb821e0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007fff36ccd250
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 9a2c17613351c9eac8e18d74829f474689ac6bc1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
dump_stack+0x19/0x20 lib/dump_stack.c:129
nmi_cpu_backtrace+0x2ba/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
watchdog+0xe45/0xf90 kernel/hung_task.c:423
kthread+0x2c7/0x360 kernel/kthread.c:389
ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 9a2c17613351c9eac8e18d74829f474689ac6bc1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:116
Code: cc cc cc cc cc cc cc b8 b4 04 25 4b 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 23 b9 42 00 55 48 89 e5 fb f4 <5d> c3 cc cc cc cc cc cc cc cc cc cc cc b8 00 00 00 00 90 90 90 90
RSP: 0018:ffffffff87407da0 EFLAGS: 000002c2
RAX: ffff8881f6e00000 RBX: ffffffff874156c0 RCX: ffffffff85a4a4fd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 000000000002814c
RBP: ffffffff87407da0 R08: ffff8881f6e395eb R09: 1ffff1103edc72bd
R10: dffffc0000000000 R11: ffffed103edc72be R12: 0000000000000000
R13: 1ffffffff0e82ad8 R14: dffffc0000000000 R15: ffffffff87ecc9a8
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fee7bbdf000 CR3: 0000000121a5a000 CR4: 00000000003526b0
Call Trace:
arch_safe_halt arch/x86/include/asm/paravirt.h:-1 [inline]
default_idle+0x17/0x30 arch/x86/kernel/process.c:754
arch_cpu_idle+0xd/0x20 arch/x86/kernel/process.c:791
default_idle_call+0x3e/0x80 kernel/sched/idle.c:117
cpuidle_idle_call kernel/sched/idle.c:193 [inline]
do_idle+0x1df/0x570 kernel/sched/idle.c:346
cpu_startup_entry+0x47/0x60 kernel/sched/idle.c:445
rest_init+0x10b/0x130 init/main.c:760
start_kernel+0x462/0x4bb init/main.c:1242
x86_64_start_reservations+0x2e/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x6a/0x7b arch/x86/kernel/head64.c:488
common_startup_64+0x13b/0x157
final repro crashed as (corrupted=false):
INFO: task jbd2/sda1-8:73 blocked for more than 122 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:0 pid:73 tgid:73 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
__wait_on_buffer+0x5a/0x70 fs/buffer.c:123
wait_on_buffer include/linux/buffer_head.h:422 [inline]
jbd2_journal_commit_transaction+0x2dba/0x5510 fs/jbd2/commit.c:814
kjournald2+0x386/0x6a0 fs/jbd2/journal.c:201
kthread+0x2c7/0x360 kernel/kthread.c:389
ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task kworker/u8:4:347 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:4 state:D stack:0 pid:347 tgid:347 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x558/0xd70 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x268/0x3d0 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1b6/0x6a0 fs/ext4/ext4_jbd2.c:239
ext4_mb_mark_context+0x393/0xee0 fs/ext4/mballoc.c:4107
ext4_mb_mark_diskspace_used+0x3aa/0x830 fs/ext4/mballoc.c:4223
ext4_mb_new_blocks+0x840/0x36c0 fs/ext4/mballoc.c:6318
ext4_ext_map_blocks+0x14d9/0x6080 fs/ext4/extents.c:4437
ext4_map_create_blocks fs/ext4/inode.c:520 [inline]
ext4_map_blocks+0x873/0x17f0 fs/ext4/inode.c:706
mpage_map_one_extent fs/ext4/inode.c:2222 [inline]
mpage_map_and_submit_extent fs/ext4/inode.c:2275 [inline]
ext4_do_writepages+0x1c4a/0x39f0 fs/ext4/inode.c:2738
ext4_writepages+0x28c/0x550 fs/ext4/inode.c:2827
do_writepages+0x3d7/0x7f0 mm/page-writeback.c:2690
__writeback_single_inode+0xc8/0xba0 fs/fs-writeback.c:1674
writeback_sb_inodes+0x6a5/0xfb0 fs/fs-writeback.c:1970
__writeback_inodes_wb+0x129/0x280 fs/fs-writeback.c:2041
wb_writeback+0x3bb/0x850 fs/fs-writeback.c:2152
wb_check_old_data_flush fs/fs-writeback.c:2256 [inline]
wb_do_writeback fs/fs-writeback.c:2309 [inline]
wb_workfn+0xa03/0xef0 fs/fs-writeback.c:2337
process_one_work kernel/workqueue.c:3273 [inline]
process_scheduled_works+0x7f7/0x1060 kernel/workqueue.c:3354
worker_thread+0xc99/0x13f0 kernel/workqueue.c:3435
kthread+0x2c7/0x360 kernel/kthread.c:389
ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.4.494:873 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.494 state:D stack:0 pid:873 tgid:873 ppid:380 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x558/0xd70 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x268/0x3d0 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1b6/0x6a0 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x1f6/0x2e0 fs/ext4/inode.c:5892
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6066
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6103
__mark_inode_dirty+0x24e/0xc50 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2056 [inline]
inode_update_time fs/inode.c:2069 [inline]
__file_update_time fs/inode.c:2258 [inline]
file_update_time+0x1d3/0x210 fs/inode.c:2288
ext4_page_mkwrite+0x2bf/0x1120 fs/ext4/inode.c:6221
do_page_mkwrite mm/memory.c:3263 [inline]
do_shared_fault mm/memory.c:5537 [inline]
do_fault mm/memory.c:5599 [inline]
do_pte_missing+0x12c4/0x4440 mm/memory.c:4069
handle_pte_fault mm/memory.c:5940 [inline]
__handle_mm_fault mm/memory.c:6083 [inline]
handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
do_user_addr_fault+0x951/0x1230 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1479 [inline]
exc_page_fault+0x58/0xc0 arch/x86/mm/fault.c:1534
asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f114046ba23
RSP: 002b:00007fff39c597b0 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34124000 RSI: 0000000000040000 RDI: 00007f11407e0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007fff39c59a40
INFO: task syz.0.492:874 blocked for more than 124 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.492 state:D stack:0 pid:874 tgid:874 ppid:383 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x558/0xd70 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x268/0x3d0 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1b6/0x6a0 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x1f6/0x2e0 fs/ext4/inode.c:5892
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6066
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6103
__mark_inode_dirty+0x24e/0xc50 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2056 [inline]
inode_update_time fs/inode.c:2069 [inline]
__file_update_time fs/inode.c:2258 [inline]
file_update_time+0x1d3/0x210 fs/inode.c:2288
ext4_page_mkwrite+0x2bf/0x1120 fs/ext4/inode.c:6221
do_page_mkwrite mm/memory.c:3263 [inline]
do_shared_fault mm/memory.c:5537 [inline]
do_fault mm/memory.c:5599 [inline]
do_pte_missing+0x12c4/0x4440 mm/memory.c:4069
handle_pte_fault mm/memory.c:5940 [inline]
__handle_mm_fault mm/memory.c:6083 [inline]
handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
do_user_addr_fault+0x951/0x1230 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1479 [inline]
exc_page_fault+0x58/0xc0 arch/x86/mm/fault.c:1534
asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f9cb266ba23
RSP: 002b:00007ffe125cfa90 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34624000 RSI: 0000000000040000 RDI: 00007f9cb29e0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffe125cfd20
INFO: task syz.3.495:875 blocked for more than 124 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.495 state:D stack:0 pid:875 tgid:875 ppid:384 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x558/0xd70 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x268/0x3d0 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1b6/0x6a0 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x1f6/0x2e0 fs/ext4/inode.c:5892
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6066
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6103
__mark_inode_dirty+0x24e/0xc50 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2056 [inline]
inode_update_time fs/inode.c:2069 [inline]
__file_update_time fs/inode.c:2258 [inline]
file_update_time+0x1d3/0x210 fs/inode.c:2288
ext4_page_mkwrite+0x2bf/0x1120 fs/ext4/inode.c:6221
do_page_mkwrite mm/memory.c:3263 [inline]
do_shared_fault mm/memory.c:5537 [inline]
do_fault mm/memory.c:5599 [inline]
do_pte_missing+0x12c4/0x4440 mm/memory.c:4069
handle_pte_fault mm/memory.c:5940 [inline]
__handle_mm_fault mm/memory.c:6083 [inline]
handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
do_user_addr_fault+0x951/0x1230 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1479 [inline]
exc_page_fault+0x58/0xc0 arch/x86/mm/fault.c:1534
asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ffa67c6ba23
RSP: 002b:00007fff83343390 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34924000 RSI: 0000000000040000 RDI: 00007ffa67fe0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007fff83343620
INFO: task syz.1.493:876 blocked for more than 124 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.493 state:D stack:0 pid:876 tgid:876 ppid:382 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6060 [inline]
__schedule+0x1496/0x20b0 kernel/sched/core.c:7880
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
io_schedule+0x88/0xe0 kernel/sched/core.c:8786
bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb3/0x2e0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x558/0xd70 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x268/0x3d0 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1b6/0x6a0 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x1f6/0x2e0 fs/ext4/inode.c:5892
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6066
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6103
__mark_inode_dirty+0x24e/0xc50 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2056 [inline]
inode_update_time fs/inode.c:2069 [inline]
__file_update_time fs/inode.c:2258 [inline]
file_update_time+0x1d3/0x210 fs/inode.c:2288
ext4_page_mkwrite+0x2bf/0x1120 fs/ext4/inode.c:6221
do_page_mkwrite mm/memory.c:3263 [inline]
do_shared_fault mm/memory.c:5537 [inline]
do_fault mm/memory.c:5599 [inline]
do_pte_missing+0x12c4/0x4440 mm/memory.c:4069
handle_pte_fault mm/memory.c:5940 [inline]
__handle_mm_fault mm/memory.c:6083 [inline]
handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
do_user_addr_fault+0x951/0x1230 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1479 [inline]
exc_page_fault+0x58/0xc0 arch/x86/mm/fault.c:1534
asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ffb81e6ba23
RSP: 002b:00007fff36cccfc0 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34724000 RSI: 0000000000040000 RDI: 00007ffb821e0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007fff36ccd250
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 9a2c17613351c9eac8e18d74829f474689ac6bc1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
dump_stack+0x19/0x20 lib/dump_stack.c:129
nmi_cpu_backtrace+0x2ba/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
watchdog+0xe45/0xf90 kernel/hung_task.c:423
kthread+0x2c7/0x360 kernel/kthread.c:389
ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 9a2c17613351c9eac8e18d74829f474689ac6bc1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:116
Code: cc cc cc cc cc cc cc b8 b4 04 25 4b 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 23 b9 42 00 55 48 89 e5 fb f4 <5d> c3 cc cc cc cc cc cc cc cc cc cc cc b8 00 00 00 00 90 90 90 90
RSP: 0018:ffffffff87407da0 EFLAGS: 000002c2
RAX: ffff8881f6e00000 RBX: ffffffff874156c0 RCX: ffffffff85a4a4fd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 000000000002814c
RBP: ffffffff87407da0 R08: ffff8881f6e395eb R09: 1ffff1103edc72bd
R10: dffffc0000000000 R11: ffffed103edc72be R12: 0000000000000000
R13: 1ffffffff0e82ad8 R14: dffffc0000000000 R15: ffffffff87ecc9a8
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fee7bbdf000 CR3: 0000000121a5a000 CR4: 00000000003526b0
Call Trace:
arch_safe_halt arch/x86/include/asm/paravirt.h:-1 [inline]
default_idle+0x17/0x30 arch/x86/kernel/process.c:754
arch_cpu_idle+0xd/0x20 arch/x86/kernel/process.c:791
default_idle_call+0x3e/0x80 kernel/sched/idle.c:117
cpuidle_idle_call kernel/sched/idle.c:193 [inline]
do_idle+0x1df/0x570 kernel/sched/idle.c:346
cpu_startup_entry+0x47/0x60 kernel/sched/idle.c:445
rest_init+0x10b/0x130 init/main.c:760
start_kernel+0x462/0x4bb init/main.c:1242
x86_64_start_reservations+0x2e/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x6a/0x7b arch/x86/kernel/head64.c:488
common_startup_64+0x13b/0x157