Extracting prog: 3m37.577052311s
Minimizing prog: 1h1m21.236052s
Simplifying prog options: 0s
Extracting C: 3m5.341092571s
Simplifying C: 48m56.745288713s
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}}): getrandom-mkdir-mount-openat-mmap
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='my_sys\x00', &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\x00', 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 0x0)
program crashed: INFO: task hung in jbd2_journal_commit_transaction
single: successfully extracted reproducer
found reproducer with 5 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}}): getrandom-mkdir-mount-openat
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='my_sys\x00', &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\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}}): getrandom-mkdir-mount-mmap
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='my_sys\x00', &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, 0xffffffffffffffff, 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}}): getrandom-mkdir-openat-mmap
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\x00', 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 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}}): getrandom-mount-openat-mmap
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mount(0x0, &(0x7f0000000200)='my_sys\x00', &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\x00', 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 0x0)
program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
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}}): mkdir-mount-openat-mmap
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='my_sys\x00', &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\x00', 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 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}}): getrandom-mkdir-mount-openat-mmap
detailed listing:
executing program 0:
getrandom(0x0, 0x0, 0x3)
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='my_sys\x00', &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\x00', 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 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}}): getrandom-mkdir-mount-openat-mmap
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mkdir(0x0, 0x1ff)
mount(0x0, &(0x7f0000000200)='my_sys\x00', &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\x00', 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 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}}): getrandom-mkdir-mount-openat-mmap
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\x00', 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 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}}): getrandom-mkdir-mount-openat-mmap
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='my_sys\x00', 0x0, 0x400, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\x00', 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 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}}): getrandom-mkdir-mount-openat-mmap
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='my_sys\x00', &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 0x0)
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}}): getrandom-mkdir-mount-openat-mmap
program crashed: INFO: task hung in jbd2_journal_commit_transaction
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}}): getrandom-mkdir-mount-openat-mmap
VM was preempted during C execution: failed to run command in VM: instance is preempted, retrying
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}}): getrandom-mkdir-mount-openat-mmap
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): getrandom-mkdir-mount-openat-mmap
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=6m0s, {Threaded:true 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}}): getrandom-mkdir-mount-openat-mmap
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=6m0s, {Threaded:true 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}}): getrandom-mkdir-mount-openat-mmap
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
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: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}}): getrandom-mkdir-mount-openat-mmap
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
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: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}}): getrandom-mkdir-mount-openat-mmap
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
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: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}}): getrandom-mkdir-mount-openat-mmap
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
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: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}}): getrandom-mkdir-mount-openat-mmap
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=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: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}}): getrandom-mkdir-mount-openat-mmap
program crashed: INFO: task hung in jbd2_journal_commit_transaction
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: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}}): getrandom-mkdir-mount-openat-mmap
program crashed: INFO: task hung in jbd2_journal_commit_transaction
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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getrandom-mkdir-mount-openat-mmap
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=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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getrandom-mkdir-mount-openat-mmap
program crashed: INFO: task hung in jbd2_journal_commit_transaction
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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getrandom-mkdir-mount-openat-mmap
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='my_sys\x00', &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\x00', 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 0x0)
program crashed: INFO: task hung in jbd2_journal_commit_transaction
validation run: crashed=true
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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getrandom-mkdir-mount-openat-mmap
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='my_sys\x00', &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\x00', 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 0x0)
program crashed: INFO: task hung in jbd2_journal_commit_transaction
validation run: crashed=true
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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getrandom-mkdir-mount-openat-mmap
detailed listing:
executing program 0:
getrandom(&(0x7f0000000580)=""/265, 0xffffff3f, 0x3)
mkdir(&(0x7f0000000000)='my_sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='my_sys\x00', &(0x7f0000000300)='sysfs\x00', 0x400, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='my_sys/bus/pci/devices/0000:00:03.0/resource1\x00', 0x2, 0x0)
mmap(&(0x7f0000800000)=nil, 0x1000, 0x3, 0x11, r0, 0x0)
program crashed: INFO: task hung in jbd2_journal_commit_transaction
validation run: crashed=true
reproducing took 2h5m13.595167132s
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 syz.1.30:440 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.30 state:D stack:0 pid:440 tgid:440 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+0x251/0xc50 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+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: 0033:0x7f21ab4667d1
RSP: 002b:00007ffcf043fea0 EFLAGS: 00010202
RAX: 0000001b34a64000 RBX: 0000000000000000 RCX: 000000000003fde8
RDX: 0000001b34a63fff RSI: 0000000000000008 RDI: 00007f21ac355720
RBP: 00007f21ac355720 R08: 0000000000000000 R09: 00007f21ab826128
R10: 00007f21ac355700 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003
INFO: task syz.0.31:443 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.31 state:D stack:0 pid:443 tgid:443 ppid:381 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+0x251/0xc50 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+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: 0033:0x7f256f46b9e3
RSP: 002b:00007ffce8c74410 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34824000 RSI: 0000000000040000 RDI: 00007f256f7e0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffce8c746a0
INFO: task syz.5.32:444 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.32 state:D stack:0 pid:444 tgid:444 ppid:387 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+0x251/0xc50 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+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: 0033:0x7f3f3386b9e3
RSP: 002b:00007ffc7af9f6e0 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b2cc24000 RSI: 0000000000040000 RDI: 00007f3f33be0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffc7af9f970
INFO: task syz.3.33:445 blocked for more than 124 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.33 state:D stack:0 pid:445 tgid:445 ppid:386 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+0x251/0xc50 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+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: 0033:0x7f583406b9e3
RSP: 002b:00007ffd69d7cc20 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b2cd24000 RSI: 0000000000040000 RDI: 00007f58343e0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffd69d7ceb0
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 200dea8a17c83f35b0a1e1238c384757fc17b797
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 200dea8a17c83f35b0a1e1238c384757fc17b797
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 6c c4 d0 ed 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 23 a9 43 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:ffffc900001a7e00 EFLAGS: 000002c2
RAX: ffff8881f6f00000 RBX: ffff88810366a600 RCX: ffffffff85a3b4fd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000028d04
RBP: ffffc900001a7e00 R08: ffff8881f6f395eb R09: 1ffff1103ede72bd
R10: dffffc0000000000 R11: ffffed103ede72be R12: 0000000000000000
R13: 1ffff110206cd4c0 R14: dffffc0000000000 R15: ffffffff87ecb868
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd132efb240 CR3: 000000010cf2e000 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
start_secondary+0x12e/0x140 arch/x86/kernel/smpboot.c:314
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 syz.1.30:440 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.30 state:D stack:0 pid:440 tgid:440 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+0x251/0xc50 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+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: 0033:0x7f21ab4667d1
RSP: 002b:00007ffcf043fea0 EFLAGS: 00010202
RAX: 0000001b34a64000 RBX: 0000000000000000 RCX: 000000000003fde8
RDX: 0000001b34a63fff RSI: 0000000000000008 RDI: 00007f21ac355720
RBP: 00007f21ac355720 R08: 0000000000000000 R09: 00007f21ab826128
R10: 00007f21ac355700 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003
INFO: task syz.0.31:443 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.31 state:D stack:0 pid:443 tgid:443 ppid:381 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+0x251/0xc50 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+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: 0033:0x7f256f46b9e3
RSP: 002b:00007ffce8c74410 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b34824000 RSI: 0000000000040000 RDI: 00007f256f7e0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffce8c746a0
INFO: task syz.5.32:444 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.32 state:D stack:0 pid:444 tgid:444 ppid:387 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+0x251/0xc50 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+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: 0033:0x7f3f3386b9e3
RSP: 002b:00007ffc7af9f6e0 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b2cc24000 RSI: 0000000000040000 RDI: 00007f3f33be0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffc7af9f970
INFO: task syz.3.33:445 blocked for more than 124 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.33 state:D stack:0 pid:445 tgid:445 ppid:386 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+0x251/0xc50 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+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: 0033:0x7f583406b9e3
RSP: 002b:00007ffd69d7cc20 EFLAGS: 00010246
RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b2cd24000 RSI: 0000000000040000 RDI: 00007f58343e0708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffd69d7ceb0
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 200dea8a17c83f35b0a1e1238c384757fc17b797
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 200dea8a17c83f35b0a1e1238c384757fc17b797
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 6c c4 d0 ed 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 23 a9 43 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:ffffc900001a7e00 EFLAGS: 000002c2
RAX: ffff8881f6f00000 RBX: ffff88810366a600 RCX: ffffffff85a3b4fd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000028d04
RBP: ffffc900001a7e00 R08: ffff8881f6f395eb R09: 1ffff1103ede72bd
R10: dffffc0000000000 R11: ffffed103ede72be R12: 0000000000000000
R13: 1ffff110206cd4c0 R14: dffffc0000000000 R15: ffffffff87ecb868
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd132efb240 CR3: 000000010cf2e000 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
start_secondary+0x12e/0x140 arch/x86/kernel/smpboot.c:314
common_startup_64+0x13b/0x157