Extracting prog: 3m34.329858562s
Minimizing prog: 54m12.224667971s
Simplifying prog options: 0s
Extracting C: 3m3.763394715s
Simplifying C: 36m34.814534202s
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", 0x500, 0x4)
program crashed: INFO: task hung in jbd2_journal_commit_transaction
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=5m22.389607928s, {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=5m22.389607928s, {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", 0x500, 0x4)
program did not crash
testing program (duration=5m22.389607928s, {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", 0x500, 0x4)
program did not crash
testing program (duration=5m22.389607928s, {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", 0x500, 0x4)
program did not crash
testing program (duration=5m22.389607928s, {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", 0x500, 0x4)
program did not crash
testing program (duration=5m22.389607928s, {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", 0x500, 0x4)
program did not crash
testing program (duration=5m22.389607928s, {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", 0x500, 0x4)
program did not crash
testing program (duration=5m22.389607928s, {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", 0x500, 0x4)
program did not crash
testing program (duration=5m22.389607928s, {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=5m22.389607928s, {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=5m22.389607928s, {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 jbd2_journal_commit_transaction
simplifying C reproducer
testing compiled C program (duration=5m22.389607928s, {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 jbd2_journal_commit_transaction
testing compiled C program (duration=5m22.389607928s, {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 do_get_write_access
a never seen crash title: INFO: task hung in do_get_write_access, ignore
testing compiled C program (duration=5m22.389607928s, {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 do_get_write_access
a never seen crash title: INFO: task hung in do_get_write_access, ignore
testing compiled C program (duration=5m22.389607928s, {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 jbd2_journal_commit_transaction
testing compiled C program (duration=5m22.389607928s, {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 jbd2_journal_commit_transaction
testing compiled C program (duration=5m22.389607928s, {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
a never seen crash title: INFO: task hung in do_get_write_access, ignore
testing compiled C program (duration=5m22.389607928s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true 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 do_get_write_access
a never seen crash title: INFO: task hung in do_get_write_access, ignore
testing compiled C program (duration=5m22.389607928s, {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: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
a never seen crash title: INFO: task hung in do_get_write_access, ignore
testing compiled C program (duration=5m22.389607928s, {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: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 jbd2_journal_commit_transaction
testing compiled C program (duration=5m22.389607928s, {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: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 do_get_write_access
a never seen crash title: INFO: task hung in do_get_write_access, ignore
testing compiled C program (duration=5m22.389607928s, {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: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 jbd2_journal_commit_transaction
testing compiled C program (duration=5m22.389607928s, {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: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
a never seen crash title: INFO: task hung in do_get_write_access, ignore
testing program (duration=5m22.389607928s, {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: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
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", 0x500, 0x4)
program crashed: INFO: task hung in do_get_write_access
validation run: crashed=true
testing program (duration=5m22.389607928s, {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: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
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", 0x500, 0x4)
program crashed: INFO: task hung in do_get_write_access
validation run: crashed=true
testing program (duration=5m22.389607928s, {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: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
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", 0x500, 0x4)
program crashed: INFO: task hung in jbd2_journal_commit_transaction
validation run: crashed=true
reproducing took 1h45m35.923416009s
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:6074 [inline]
__schedule+0x16fe/0x23d0 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7969 [inline]
schedule+0xc1/0x170 kernel/sched/core.c:7984
io_schedule+0x85/0x150 kernel/sched/core.c:8799
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+0x2c4/0x360 kernel/kthread.c:389
ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.2.167:545 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.167 state:D stack:0 pid:545 tgid:545 ppid:381 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6074 [inline]
__schedule+0x16fe/0x23d0 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7969 [inline]
schedule+0xc1/0x170 kernel/sched/core.c:7984
io_schedule+0x85/0x150 kernel/sched/core.c:8799
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:5899
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6073
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6110
__mark_inode_dirty+0x251/0xc50 fs/fs-writeback.c:2542
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:6228
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+0x12c1/0x4440 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: 0033:0x7fd15626cea3
RSP: 002b:00007ffda3746030 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34724000 RSI: 0000000000040000 RDI: 00007fd1565e7708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffda37462c0
INFO: task syz.1.166:546 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.166 state:D stack:0 pid:546 tgid:546 ppid:378 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6074 [inline]
__schedule+0x16fe/0x23d0 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7969 [inline]
schedule+0xc1/0x170 kernel/sched/core.c:7984
io_schedule+0x85/0x150 kernel/sched/core.c:8799
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:5899
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6073
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6110
__mark_inode_dirty+0x251/0xc50 fs/fs-writeback.c:2542
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:6228
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+0x12c1/0x4440 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: 0033:0x7f118126cea3
RSP: 002b:00007ffea46553e0 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34424000 RSI: 0000000000040000 RDI: 00007f11815e7708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffea4655670
INFO: task syz.5.168:547 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.168 state:D stack:0 pid:547 tgid:547 ppid:382 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6074 [inline]
__schedule+0x16fe/0x23d0 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7969 [inline]
schedule+0xc1/0x170 kernel/sched/core.c:7984
io_schedule+0x85/0x150 kernel/sched/core.c:8799
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:5899
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6073
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6110
__mark_inode_dirty+0x251/0xc50 fs/fs-writeback.c:2542
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:6228
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+0x12c1/0x4440 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: 0033:0x7f76cb46cea3
RSP: 002b:00007ffc41468070 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34824000 RSI: 0000000000040000 RDI: 00007f76cb7e7708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffc41468300
INFO: task syz.0.169:548 blocked for more than 124 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.169 state:D stack:0 pid:548 tgid:548 ppid:377 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6074 [inline]
__schedule+0x16fe/0x23d0 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7969 [inline]
schedule+0xc1/0x170 kernel/sched/core.c:7984
io_schedule+0x85/0x150 kernel/sched/core.c:8799
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:5899
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6073
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6110
__mark_inode_dirty+0x251/0xc50 fs/fs-writeback.c:2542
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:6228
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+0x12c1/0x4440 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: 0033:0x7fcd60e6cea3
RSP: 002b:00007fffcf06f2e0 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34324000 RSI: 0000000000040000 RDI: 00007fcd611e7708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007fffcf06f570
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 b337f5a91fe3fd607f319abe4015f181b3f4c6c0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
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:114
nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:63
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
cpumask_backtrace+0x1f/0x30 lib/nmi_backtrace.c:127
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
watchdog+0xe45/0xf90 kernel/hung_task.c:423
kthread+0x2c4/0x360 kernel/kthread.c:389
ret_from_fork+0x64/0xa0 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 b337f5a91fe3fd607f319abe4015f181b3f4c6c0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:116
Code: cc cc cc cc cc cc cc b8 d2 ce 97 19 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 83 59 3e 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:ffffffff87c07da0 EFLAGS: 000002c2
RAX: ffff8881f6c00000 RBX: ffffffff87c156c0 RCX: ffffffff85a9053d
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000024fa4
RBP: ffffffff87c07da0 R08: ffff8881f6c396fb R09: 1ffff1103ed872df
R10: dffffc0000000000 R11: ffffed103ed872e0 R12: 0000000000000000
R13: 1ffffffff0f82ad8 R14: dffffc0000000000 R15: ffffffff886da8e8
FS: 0000000000000000(0000) GS:ffff8881f6c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb64a6496c0 CR3: 000000011f876000 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+0x46a/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:6074 [inline]
__schedule+0x16fe/0x23d0 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7969 [inline]
schedule+0xc1/0x170 kernel/sched/core.c:7984
io_schedule+0x85/0x150 kernel/sched/core.c:8799
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+0x2c4/0x360 kernel/kthread.c:389
ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.2.167:545 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.167 state:D stack:0 pid:545 tgid:545 ppid:381 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6074 [inline]
__schedule+0x16fe/0x23d0 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7969 [inline]
schedule+0xc1/0x170 kernel/sched/core.c:7984
io_schedule+0x85/0x150 kernel/sched/core.c:8799
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:5899
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6073
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6110
__mark_inode_dirty+0x251/0xc50 fs/fs-writeback.c:2542
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:6228
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+0x12c1/0x4440 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: 0033:0x7fd15626cea3
RSP: 002b:00007ffda3746030 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34724000 RSI: 0000000000040000 RDI: 00007fd1565e7708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffda37462c0
INFO: task syz.1.166:546 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.166 state:D stack:0 pid:546 tgid:546 ppid:378 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6074 [inline]
__schedule+0x16fe/0x23d0 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7969 [inline]
schedule+0xc1/0x170 kernel/sched/core.c:7984
io_schedule+0x85/0x150 kernel/sched/core.c:8799
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:5899
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6073
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6110
__mark_inode_dirty+0x251/0xc50 fs/fs-writeback.c:2542
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:6228
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+0x12c1/0x4440 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: 0033:0x7f118126cea3
RSP: 002b:00007ffea46553e0 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34424000 RSI: 0000000000040000 RDI: 00007f11815e7708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffea4655670
INFO: task syz.5.168:547 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.168 state:D stack:0 pid:547 tgid:547 ppid:382 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6074 [inline]
__schedule+0x16fe/0x23d0 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7969 [inline]
schedule+0xc1/0x170 kernel/sched/core.c:7984
io_schedule+0x85/0x150 kernel/sched/core.c:8799
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:5899
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6073
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6110
__mark_inode_dirty+0x251/0xc50 fs/fs-writeback.c:2542
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:6228
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+0x12c1/0x4440 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: 0033:0x7f76cb46cea3
RSP: 002b:00007ffc41468070 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34824000 RSI: 0000000000040000 RDI: 00007f76cb7e7708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffc41468300
INFO: task syz.0.169:548 blocked for more than 124 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.169 state:D stack:0 pid:548 tgid:548 ppid:377 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:6074 [inline]
__schedule+0x16fe/0x23d0 kernel/sched/core.c:7894
__schedule_loop kernel/sched/core.c:7969 [inline]
schedule+0xc1/0x170 kernel/sched/core.c:7984
io_schedule+0x85/0x150 kernel/sched/core.c:8799
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:5899
__ext4_mark_inode_dirty+0xac/0x5e0 fs/ext4/inode.c:6073
ext4_dirty_inode+0xc9/0x110 fs/ext4/inode.c:6110
__mark_inode_dirty+0x251/0xc50 fs/fs-writeback.c:2542
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:6228
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+0x12c1/0x4440 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: 0033:0x7fcd60e6cea3
RSP: 002b:00007fffcf06f2e0 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34324000 RSI: 0000000000040000 RDI: 00007fcd611e7708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007fffcf06f570
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 b337f5a91fe3fd607f319abe4015f181b3f4c6c0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
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:114
nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:63
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
cpumask_backtrace+0x1f/0x30 lib/nmi_backtrace.c:127
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
watchdog+0xe45/0xf90 kernel/hung_task.c:423
kthread+0x2c4/0x360 kernel/kthread.c:389
ret_from_fork+0x64/0xa0 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 b337f5a91fe3fd607f319abe4015f181b3f4c6c0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:116
Code: cc cc cc cc cc cc cc b8 d2 ce 97 19 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 83 59 3e 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:ffffffff87c07da0 EFLAGS: 000002c2
RAX: ffff8881f6c00000 RBX: ffffffff87c156c0 RCX: ffffffff85a9053d
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000024fa4
RBP: ffffffff87c07da0 R08: ffff8881f6c396fb R09: 1ffff1103ed872df
R10: dffffc0000000000 R11: ffffed103ed872e0 R12: 0000000000000000
R13: 1ffffffff0f82ad8 R14: dffffc0000000000 R15: ffffffff886da8e8
FS: 0000000000000000(0000) GS:ffff8881f6c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb64a6496c0 CR3: 000000011f876000 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+0x46a/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