Extracting prog: 1m16.551670772s
Minimizing prog: 6m53.125681279s
Simplifying prog options: 0s
Extracting C: 24.017390629s
Simplifying C: 6m2.803423885s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000200)='./file2\x00', 0x200000, &(0x7f00000000c0)={[{@dioread_lock}, {@noblock_validity}, {@lazytime}, {@noblock_validity}]}, 0xfc, 0x564, &(0x7f00000008c0)="$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")
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpuset.memory_pressure_enabled\x00', 0x275a, 0x0)
write$binfmt_script(r0, &(0x7f0000000240)={'#! ', './file0'}, 0xb)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0)
madvise(&(0x7f0000000000/0x600000)=nil, 0x60000b, 0x9)
madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x17)

program crashed: kernel BUG in ext4_writepages
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
testing program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000200)='./file2\x00', 0x200000, &(0x7f00000000c0)={[{@dioread_lock}, {@noblock_validity}, {@lazytime}, {@noblock_validity}]}, 0xfc, 0x564, &(0x7f00000008c0)="$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")
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpuset.memory_pressure_enabled\x00', 0x275a, 0x0)
write$binfmt_script(r0, &(0x7f0000000240)={'#! ', './file0'}, 0xb)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0)
madvise(&(0x7f0000000000/0x600000)=nil, 0x60000b, 0x9)

program did not crash
testing program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000200)='./file2\x00', 0x200000, &(0x7f00000000c0)={[{@dioread_lock}, {@noblock_validity}, {@lazytime}, {@noblock_validity}]}, 0xfc, 0x564, &(0x7f00000008c0)="$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")
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpuset.memory_pressure_enabled\x00', 0x275a, 0x0)
write$binfmt_script(r0, &(0x7f0000000240)={'#! ', './file0'}, 0xb)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0)
madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x17)

program did not crash
testing program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-madvise-madvise
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000200)='./file2\x00', 0x200000, &(0x7f00000000c0)={[{@dioread_lock}, {@noblock_validity}, {@lazytime}, {@noblock_validity}]}, 0xfc, 0x564, &(0x7f00000008c0)="$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")
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpuset.memory_pressure_enabled\x00', 0x275a, 0x0)
write$binfmt_script(r0, &(0x7f0000000240)={'#! ', './file0'}, 0xb)
madvise(&(0x7f0000000000/0x600000)=nil, 0x60000b, 0x9)
madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x17)

program did not crash
testing program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): syz_mount_image$ext4-openat$cgroup_ro-mmap-madvise-madvise
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000200)='./file2\x00', 0x200000, &(0x7f00000000c0)={[{@dioread_lock}, {@noblock_validity}, {@lazytime}, {@noblock_validity}]}, 0xfc, 0x564, &(0x7f00000008c0)="$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")
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpuset.memory_pressure_enabled\x00', 0x275a, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0)
madvise(&(0x7f0000000000/0x600000)=nil, 0x60000b, 0x9)
madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x17)

program did not crash
testing program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): syz_mount_image$ext4-write$binfmt_script-mmap-madvise-madvise
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000200)='./file2\x00', 0x200000, &(0x7f00000000c0)={[{@dioread_lock}, {@noblock_validity}, {@lazytime}, {@noblock_validity}]}, 0xfc, 0x564, &(0x7f00000008c0)="$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")
write$binfmt_script(0xffffffffffffffff, &(0x7f0000000240)={'#! ', './file0'}, 0xb)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, 0xffffffffffffffff, 0x0)
madvise(&(0x7f0000000000/0x600000)=nil, 0x60000b, 0x9)
madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x17)

program did not crash
testing program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
detailed listing:
executing program 0:
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpuset.memory_pressure_enabled\x00', 0x275a, 0x0)
write$binfmt_script(r0, &(0x7f0000000240)={'#! ', './file0'}, 0xb)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0)
madvise(&(0x7f0000000000/0x600000)=nil, 0x60000b, 0x9)
madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x17)

program did not crash
testing program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000200)='./file2\x00', 0x200000, &(0x7f00000000c0)={[{@dioread_lock}, {@noblock_validity}, {@lazytime}, {@noblock_validity}]}, 0xfc, 0x564, &(0x7f00000008c0)="$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")
r0 = openat$cgroup_ro(0xffffffffffffff9c, 0x0, 0x275a, 0x0)
write$binfmt_script(r0, &(0x7f0000000240)={'#! ', './file0'}, 0xb)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0)
madvise(&(0x7f0000000000/0x600000)=nil, 0x60000b, 0x9)
madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x17)

program did not crash
testing program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000200)='./file2\x00', 0x200000, &(0x7f00000000c0)={[{@dioread_lock}, {@noblock_validity}, {@lazytime}, {@noblock_validity}]}, 0xfc, 0x564, &(0x7f00000008c0)="$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")
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpuset.memory_pressure_enabled\x00', 0x275a, 0x0)
write$binfmt_script(r0, 0x0, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0)
madvise(&(0x7f0000000000/0x600000)=nil, 0x60000b, 0x9)
madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x17)

program did not crash
extracting C reproducer
testing compiled C program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
program crashed: kernel BUG in ext4_writepages
simplifying C reproducer
testing compiled C program (duration=43.395977361s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
program did not crash
testing compiled C program (duration=43.395977361s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
program did not crash
testing compiled C program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
program did not crash
testing compiled C program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
program crashed: kernel BUG in ext4_writepages
testing compiled C program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
program crashed: kernel BUG in ext4_writepages
testing compiled C program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
program crashed: kernel BUG in ext4_writepages
testing compiled C program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
program crashed: kernel BUG in ext4_writepages
testing program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000200)='./file2\x00', 0x200000, &(0x7f00000000c0)={[{@dioread_lock}, {@noblock_validity}, {@lazytime}, {@noblock_validity}]}, 0xfc, 0x564, &(0x7f00000008c0)="$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")
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpuset.memory_pressure_enabled\x00', 0x275a, 0x0)
write$binfmt_script(r0, &(0x7f0000000240)={'#! ', './file0'}, 0xb)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0)
madvise(&(0x7f0000000000/0x600000)=nil, 0x60000b, 0x9)
madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x17)

program crashed: kernel BUG in ext4_writepages
validation run: crashed=true
testing program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000200)='./file2\x00', 0x200000, &(0x7f00000000c0)={[{@dioread_lock}, {@noblock_validity}, {@lazytime}, {@noblock_validity}]}, 0xfc, 0x564, &(0x7f00000008c0)="$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")
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpuset.memory_pressure_enabled\x00', 0x275a, 0x0)
write$binfmt_script(r0, &(0x7f0000000240)={'#! ', './file0'}, 0xb)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0)
madvise(&(0x7f0000000000/0x600000)=nil, 0x60000b, 0x9)
madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x17)

program crashed: kernel BUG in ext4_writepages
validation run: crashed=true
testing program (duration=43.395977361s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-openat$cgroup_ro-write$binfmt_script-mmap-madvise-madvise
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000200)='./file2\x00', 0x200000, &(0x7f00000000c0)={[{@dioread_lock}, {@noblock_validity}, {@lazytime}, {@noblock_validity}]}, 0xfc, 0x564, &(0x7f00000008c0)="$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")
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpuset.memory_pressure_enabled\x00', 0x275a, 0x0)
write$binfmt_script(r0, &(0x7f0000000240)={'#! ', './file0'}, 0xb)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0)
madvise(&(0x7f0000000000/0x600000)=nil, 0x60000b, 0x9)
madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x17)

program crashed: kernel BUG in ext4_writepages
validation run: crashed=true
reproducing took 17m15.634561514s
repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2761!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 337 Comm: kworker/u4:3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: writeback wb_workfn (flush-7:2)
RIP: 0010:ext4_writepages+0x2ff8/0x3020 fs/ext4/inode.c:2760
Code: 94 86 ff 84 db 75 31 e8 d6 91 86 ff 49 bc 00 00 00 00 00 fc ff df 4c 8b 7c 24 18 4c 8b 6c 24 38 e9 a2 f7 ff ff e8 b8 91 86 ff <0f> 0b e8 b1 91 86 ff e8 f8 02 17 ff eb 93 e8 a5 91 86 ff e8 ec 02
RSP: 0018:ffffc900073ff120 EFLAGS: 00010293
RAX: ffffffff81e977a8 RBX: 000000c410000000 RCX: ffff88810fb01440
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900073ff490 R08: dffffc0000000000 R09: ffffed10229c5b7b
R10: ffffed10229c5b7b R11: 1ffff110229c5b7a R12: dffffc0000000000
R13: ffff888114e2dce8 R14: 0000008000000000 R15: ffff888114e2dbd0
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3ac8972060 CR3: 000000012f330000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x3a9/0x5e0 mm/page-writeback.c:2494
 __writeback_single_inode+0xc6/0xad0 fs/fs-writeback.c:1612
 writeback_sb_inodes+0x9b8/0x1550 fs/fs-writeback.c:1903
 wb_writeback+0x3f1/0x980 fs/fs-writeback.c:2079
 wb_do_writeback fs/fs-writeback.c:2226 [inline]
 wb_workfn+0x350/0xda0 fs/fs-writeback.c:2266
 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
 worker_thread+0xa29/0x11f0 kernel/workqueue.c:2449
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_writepages+0x2ff8/0x3020 fs/ext4/inode.c:2760
Code: 94 86 ff 84 db 75 31 e8 d6 91 86 ff 49 bc 00 00 00 00 00 fc ff df 4c 8b 7c 24 18 4c 8b 6c 24 38 e9 a2 f7 ff ff e8 b8 91 86 ff <0f> 0b e8 b1 91 86 ff e8 f8 02 17 ff eb 93 e8 a5 91 86 ff e8 ec 02
RSP: 0018:ffffc900073ff120 EFLAGS: 00010293
RAX: ffffffff81e977a8 RBX: 000000c410000000 RCX: ffff88810fb01440
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900073ff490 R08: dffffc0000000000 R09: ffffed10229c5b7b
R10: ffffed10229c5b7b R11: 1ffff110229c5b7a R12: dffffc0000000000
R13: ffff888114e2dce8 R14: 0000008000000000 R15: ffff888114e2dbd0
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7122a006c0 CR3: 000000012a42d000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

final repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2761!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 337 Comm: kworker/u4:3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: writeback wb_workfn (flush-7:2)
RIP: 0010:ext4_writepages+0x2ff8/0x3020 fs/ext4/inode.c:2760
Code: 94 86 ff 84 db 75 31 e8 d6 91 86 ff 49 bc 00 00 00 00 00 fc ff df 4c 8b 7c 24 18 4c 8b 6c 24 38 e9 a2 f7 ff ff e8 b8 91 86 ff <0f> 0b e8 b1 91 86 ff e8 f8 02 17 ff eb 93 e8 a5 91 86 ff e8 ec 02
RSP: 0018:ffffc900073ff120 EFLAGS: 00010293
RAX: ffffffff81e977a8 RBX: 000000c410000000 RCX: ffff88810fb01440
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900073ff490 R08: dffffc0000000000 R09: ffffed10229c5b7b
R10: ffffed10229c5b7b R11: 1ffff110229c5b7a R12: dffffc0000000000
R13: ffff888114e2dce8 R14: 0000008000000000 R15: ffff888114e2dbd0
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3ac8972060 CR3: 000000012f330000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x3a9/0x5e0 mm/page-writeback.c:2494
 __writeback_single_inode+0xc6/0xad0 fs/fs-writeback.c:1612
 writeback_sb_inodes+0x9b8/0x1550 fs/fs-writeback.c:1903
 wb_writeback+0x3f1/0x980 fs/fs-writeback.c:2079
 wb_do_writeback fs/fs-writeback.c:2226 [inline]
 wb_workfn+0x350/0xda0 fs/fs-writeback.c:2266
 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
 worker_thread+0xa29/0x11f0 kernel/workqueue.c:2449
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_writepages+0x2ff8/0x3020 fs/ext4/inode.c:2760
Code: 94 86 ff 84 db 75 31 e8 d6 91 86 ff 49 bc 00 00 00 00 00 fc ff df 4c 8b 7c 24 18 4c 8b 6c 24 38 e9 a2 f7 ff ff e8 b8 91 86 ff <0f> 0b e8 b1 91 86 ff e8 f8 02 17 ff eb 93 e8 a5 91 86 ff e8 ec 02
RSP: 0018:ffffc900073ff120 EFLAGS: 00010293
RAX: ffffffff81e977a8 RBX: 000000c410000000 RCX: ffff88810fb01440
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900073ff490 R08: dffffc0000000000 R09: ffffed10229c5b7b
R10: ffffed10229c5b7b R11: 1ffff110229c5b7a R12: dffffc0000000000
R13: ffff888114e2dce8 R14: 0000008000000000 R15: ffff888114e2dbd0
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7122a006c0 CR3: 000000012a42d000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400