Extracting prog: 1m57.667577158s
Minimizing prog: 4m18.195946566s
Simplifying prog options: 0s
Extracting C: 55.361428249s
Simplifying C: 12m39.542570784s


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$ext4-unlinkat-syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000100)='./file1\x00', 0x8, &(0x7f00000000c0)={[{@lazytime}, {@errors_remount}]}, 0x2, 0x53a, &(0x7f0000000c80)="$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")
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)
syz_mount_image$ext4(&(0x7f00000001c0)='ext4\x00', &(0x7f0000000000)='./file1\x00', 0x8413, &(0x7f0000000100)={[{@delalloc}, {}, {@nodioread_nolock}, {@acl}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1}}, {@noblock_validity}, {@usrjquota}, {@jqfmt_vfsv0}, {@inode_readahead_blks={'inode_readahead_blks', 0x3d, 0x1000}}, {@inlinecrypt}, {@sysvgroups}]}, 0x18, 0x569, &(0x7f0000000780)="$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")

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {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$ext4-unlinkat-syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000100)='./file1\x00', 0x8, &(0x7f00000000c0)={[{@lazytime}, {@errors_remount}]}, 0x2, 0x53a, &(0x7f0000000c80)="$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")
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)
syz_mount_image$ext4(&(0x7f00000001c0)='ext4\x00', &(0x7f0000000000)='./file1\x00', 0x8413, &(0x7f0000000100)={[{@delalloc}, {}, {@nodioread_nolock}, {@acl}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1}}, {@noblock_validity}, {@usrjquota}, {@jqfmt_vfsv0}, {@inode_readahead_blks={'inode_readahead_blks', 0x3d, 0x1000}}, {@inlinecrypt}, {@sysvgroups}]}, 0x18, 0x569, &(0x7f0000000780)="$eJzs3c9vHFcdAPDvjL3+kThZV3CASrSFFqURZB3XamNxKEVCcKoEKvfg2mvLytqO7HUbW5XiiD8ACaGCxI1LL0j8AUhQqReOFVIluAICJFRBCgeQoINmPbt27VlncexdJ/58pMm892bfft+b9czOvJ3MBHBuvVJMH2dZdjUiqkV5WkxfyDM7Ec9ExEf335rPpySy7LW/JZEUZe33ylpG4+JulfwNRuKbEa8nh+NubG3fmms06utFfqq5cntqY2v72vLK3FJ9qb46MzP90uyN2Rdnrz9M9xYvFolLEfHy1//y9vff+cbLv/zym3+8+dehdqvvxoF+/J+Gy4v3d7oSY/lsfK9k/ZjBzqL2Cqge6PVR7hV/IgAA9NdYcViaH+dfjWoMdTucBQAAAB5Z2Vcn4j9J+7e7Q0a6lAMAAACPkDQiJiJJa8X1vhORprVatK7h/XRcSBtrG80vLa5tri7kyyImo5IuLjfq14vrPSejkuT56VZ6L//CgfxMRDyRRvywOt7K1+bXGguDHvwAAACAc+LigfP/f1bTdHTQjQIAAABO3uSgGwAAAACcOuf/AAAA8Phz/g8AAACPtW+9+mo+Ze3nXy+8sbV5a+2Nawv1jVu1lc352vza+u3a0traUuuefStHvlnn0YGrm3emmvWN5lhE3FxZ21xt3lzefQQ2AAAA0H9PPP3u75KI2PnKeGvKjexb/u/iOQEDayBwajpDdpEU85HDL/rD5d35n/vUKKAvhvZn3h5cO4D+a33/jx+r6vFqAWdGZdANAAYu2UtWy5aPJcPlFd8v5p/vNZLDBgAAGJQrn+3++396ZM2doxcDZ56NGM6voUE3ABiY1qh+ySV/pRwswGOl0jkCSAbcEmBQHrT1d715x/u9Rtj3f4hGe60DAACcpInWlKS1YnhvItK0Vou41HosQCVZXG7Ur0fE5Yj4bbUymuenWzUTIwYAAAAAAAAAAAAAAAAAAAAAAAAA0KMsSyIDAAAAHmsR6Wjy3u69/K9Un5s4OD4wkvyrGsUjQt/8yWs/ujPXbK5P5+V/75Q3f1yUv3B4fGG4L6MYAAAAcD70+kjt9nl6+zweAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAE7SR/ffmm9P/Yz74dciYrIs/nCMteZjUYmIC/9IYnhfvSQihk4g/s69iPhMWfwkb1YnZFn88dOPH5PFWiiLf/EE4sN59m6+/3mlbPtL45nWvHz7G474RP64uu//orP/G+qy/V/qMcaTH/x86hMF7+ztOT+8F/HkcPn+px0/6RL/2R7jf/c729vlS8Y6qbL4+2NNNVduT21sbV9bXplbqi/VV2dmpl+avTH74uz1qcXlRr34NyJuHNot/uBzv/i4W9vy/l/oEn/yAf1/rsf+//eDO/c/Fa/nyUpZ/OefLYn/65921tHB+Gnx3ffFIp0vv9JO7+ym93vqZ7956qj+L3Tp/4M+/+d77P/Vb3/vTz2+FADog42t7VtzjUZ9/ZFJZEMRZYuGu9TKz9L73NSIs7CiDifS4kM/K+0ZeOLuXsmvfr+7bp6O4/9lZln2kKs3ybLs7gl0cKL4pHuudeXy7ouTTsmAdkgAAMCp2TsN2PfrxOUBNwoAAAAAAAAAAAAAAAAAAADOmY2t9079LmsHY+50UslJ3EIbAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOBE/C8AAP//JKvadQ==")

program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=55.857407262s, {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$ext4-unlinkat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000100)='./file1\x00', 0x8, &(0x7f00000000c0)={[{@lazytime}, {@errors_remount}]}, 0x2, 0x53a, &(0x7f0000000c80)="$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")
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)

program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
testing program (duration=55.857407262s, {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$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000100)='./file1\x00', 0x8, &(0x7f00000000c0)={[{@lazytime}, {@errors_remount}]}, 0x2, 0x53a, &(0x7f0000000c80)="$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")

program did not crash
testing program (duration=55.857407262s, {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}}): unlinkat
detailed listing:
executing program 0:
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)

program did not crash
testing program (duration=55.857407262s, {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$ext4-unlinkat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000100)='./file1\x00', 0x8, &(0x7f00000000c0)={[{@lazytime}, {@errors_remount}]}, 0x2, 0x53a, &(0x7f0000000c80)="$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")
unlinkat(0xffffffffffffff9c, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=55.857407262s, {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$ext4-unlinkat
program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
simplifying C reproducer
testing compiled C program (duration=55.857407262s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-unlinkat
program did not crash
testing compiled C program (duration=55.857407262s, {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$ext4-unlinkat
program did not crash
testing compiled C program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-unlinkat
program did not crash
testing compiled C program (duration=55.857407262s, {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$ext4-unlinkat
program did not crash
testing compiled C program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-unlinkat
program did not crash
testing compiled C program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): syz_mount_image$ext4-unlinkat
program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
testing compiled C program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-unlinkat
program did not crash
testing compiled C program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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}}): syz_mount_image$ext4-unlinkat
program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
testing compiled C program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-unlinkat
program did not crash
testing compiled C program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:false 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}}): syz_mount_image$ext4-unlinkat
program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
testing compiled C program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-unlinkat
program did not crash
testing compiled C program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:false 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}}): syz_mount_image$ext4-unlinkat
program did not crash
testing compiled C program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-unlinkat
program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
testing compiled C program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:false 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}}): syz_mount_image$ext4-unlinkat
program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
testing program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-unlinkat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000100)='./file1\x00', 0x8, &(0x7f00000000c0)={[{@lazytime}, {@errors_remount}]}, 0x2, 0x53a, &(0x7f0000000c80)="$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")
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)

program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
validation run: crashed=true
testing program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:false 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}}): syz_mount_image$ext4-unlinkat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000100)='./file1\x00', 0x8, &(0x7f00000000c0)={[{@lazytime}, {@errors_remount}]}, 0x2, 0x53a, &(0x7f0000000c80)="$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")
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)

program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
validation run: crashed=true
testing program (duration=55.857407262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:false 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}}): syz_mount_image$ext4-unlinkat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000100)='./file1\x00', 0x8, &(0x7f00000000c0)={[{@lazytime}, {@errors_remount}]}, 0x2, 0x53a, &(0x7f0000000c80)="$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")
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)

program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
validation run: crashed=true
reproducing took 23m9.114876174s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_write include/linux/instrumented.h:87 [inline]
BUG: KASAN: null-ptr-deref in set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline]
BUG: KASAN: null-ptr-deref in do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Write of size 8 at addr 0000000000000000 by task udevd/412

CPU: 1 PID: 412 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_report+0x3d/0x60 mm/kasan/report.c:423
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_write include/linux/instrumented.h:87 [inline]
 set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline]
 do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
 force_page_cache_ra mm/readahead.c:360 [inline]
 page_cache_sync_ra+0x32b/0x3d0 mm/readahead.c:751
 page_cache_sync_readahead include/linux/pagemap.h:1259 [inline]
 filemap_get_pages mm/filemap.c:2706 [inline]
 filemap_read+0x6b6/0x23c0 mm/filemap.c:2801
 blkdev_read_iter+0x439/0x580 block/fops.c:668
 call_read_iter include/linux/fs.h:2276 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x46e/0x930 fs/read_write.c:470
 ksys_read+0x14a/0x260 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:621
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe5316a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffff16877d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fe531e2c880 RCX: 00007fe5316a7407
RDX: 0000000000000200 RSI: 00007fe531e27000 RDI: 0000000000000009
RBP: 0000560b9c8d7790 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000004000 R14: 0000560b9c8d4a98 R15: 00007fe531f5339c
 </TASK>
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000003
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 412 Comm: udevd Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:arch_set_bit include/linux/instrumented.h:87 [inline]
RIP: 0010:set_bit include/asm-generic/bitops/instrumented-atomic.h:29 [inline]
RIP: 0010:do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Code: fd ff 48 3d 01 f0 ff ff 72 10 e8 7c 1e d2 ff 49 83 ee 01 73 78 e9 87 00 00 00 49 89 c4 48 89 c7 be 08 00 00 00 e8 d1 ba 17 00 <f0> 41 80 4c 24 03 10 4c 89 e7 48 83 c7 34 be 04 00 00 00 e8 b9 ba
RSP: 0018:ffffc90000ad7878 EFLAGS: 00010246
RAX: ffff8881180a0000 RBX: 0000000000000004 RCX: ffff8881180a0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000ad78c8 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc
R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: 0000000000000000
R13: 000000000000003b R14: 0000000000000000 R15: ffff88810b7314d0
FS:  00007fe531e2c880(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000003 CR3: 0000000116671000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 force_page_cache_ra mm/readahead.c:360 [inline]
 page_cache_sync_ra+0x32b/0x3d0 mm/readahead.c:751
 page_cache_sync_readahead include/linux/pagemap.h:1259 [inline]
 filemap_get_pages mm/filemap.c:2706 [inline]
 filemap_read+0x6b6/0x23c0 mm/filemap.c:2801
 blkdev_read_iter+0x439/0x580 block/fops.c:668
 call_read_iter include/linux/fs.h:2276 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x46e/0x930 fs/read_write.c:470
 ksys_read+0x14a/0x260 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:621
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe5316a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffff16877d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fe531e2c880 RCX: 00007fe5316a7407
RDX: 0000000000000200 RSI: 00007fe531e27000 RDI: 0000000000000009
RBP: 0000560b9c8d7790 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000004000 R14: 0000560b9c8d4a98 R15: 00007fe531f5339c
 </TASK>
Modules linked in:
CR2: 0000000000000003
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_set_bit include/linux/instrumented.h:87 [inline]
RIP: 0010:set_bit include/asm-generic/bitops/instrumented-atomic.h:29 [inline]
RIP: 0010:do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Code: fd ff 48 3d 01 f0 ff ff 72 10 e8 7c 1e d2 ff 49 83 ee 01 73 78 e9 87 00 00 00 49 89 c4 48 89 c7 be 08 00 00 00 e8 d1 ba 17 00 <f0> 41 80 4c 24 03 10 4c 89 e7 48 83 c7 34 be 04 00 00 00 e8 b9 ba
RSP: 0018:ffffc90000ad7878 EFLAGS: 00010246
RAX: ffff8881180a0000 RBX: 0000000000000004 RCX: ffff8881180a0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000ad78c8 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc
R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: 0000000000000000
R13: 000000000000003b R14: 0000000000000000 R15: ffff88810b7314d0
FS:  00007fe531e2c880(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000003 CR3: 0000000116671000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	72 10                	jb     0x18
   8:	e8 7c 1e d2 ff       	call   0xffd21e89
   d:	49 83 ee 01          	sub    $0x1,%r14
  11:	73 78                	jae    0x8b
  13:	e9 87 00 00 00       	jmp    0x9f
  18:	49 89 c4             	mov    %rax,%r12
  1b:	48 89 c7             	mov    %rax,%rdi
  1e:	be 08 00 00 00       	mov    $0x8,%esi
  23:	e8 d1 ba 17 00       	call   0x17baf9
* 28:	f0 41 80 4c 24 03 10 	lock orb $0x10,0x3(%r12) <-- trapping instruction
  2f:	4c 89 e7             	mov    %r12,%rdi
  32:	48 83 c7 34          	add    $0x34,%rdi
  36:	be 04 00 00 00       	mov    $0x4,%esi
  3b:	e8                   	.byte 0xe8
  3c:	b9                   	.byte 0xb9
  3d:	ba                   	.byte 0xba

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_write include/linux/instrumented.h:87 [inline]
BUG: KASAN: null-ptr-deref in set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline]
BUG: KASAN: null-ptr-deref in do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Write of size 8 at addr 0000000000000000 by task udevd/412

CPU: 1 PID: 412 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_report+0x3d/0x60 mm/kasan/report.c:423
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_write include/linux/instrumented.h:87 [inline]
 set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline]
 do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
 force_page_cache_ra mm/readahead.c:360 [inline]
 page_cache_sync_ra+0x32b/0x3d0 mm/readahead.c:751
 page_cache_sync_readahead include/linux/pagemap.h:1259 [inline]
 filemap_get_pages mm/filemap.c:2706 [inline]
 filemap_read+0x6b6/0x23c0 mm/filemap.c:2801
 blkdev_read_iter+0x439/0x580 block/fops.c:668
 call_read_iter include/linux/fs.h:2276 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x46e/0x930 fs/read_write.c:470
 ksys_read+0x14a/0x260 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:621
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe5316a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffff16877d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fe531e2c880 RCX: 00007fe5316a7407
RDX: 0000000000000200 RSI: 00007fe531e27000 RDI: 0000000000000009
RBP: 0000560b9c8d7790 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000004000 R14: 0000560b9c8d4a98 R15: 00007fe531f5339c
 </TASK>
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000003
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 412 Comm: udevd Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:arch_set_bit include/linux/instrumented.h:87 [inline]
RIP: 0010:set_bit include/asm-generic/bitops/instrumented-atomic.h:29 [inline]
RIP: 0010:do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Code: fd ff 48 3d 01 f0 ff ff 72 10 e8 7c 1e d2 ff 49 83 ee 01 73 78 e9 87 00 00 00 49 89 c4 48 89 c7 be 08 00 00 00 e8 d1 ba 17 00 <f0> 41 80 4c 24 03 10 4c 89 e7 48 83 c7 34 be 04 00 00 00 e8 b9 ba
RSP: 0018:ffffc90000ad7878 EFLAGS: 00010246
RAX: ffff8881180a0000 RBX: 0000000000000004 RCX: ffff8881180a0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000ad78c8 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc
R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: 0000000000000000
R13: 000000000000003b R14: 0000000000000000 R15: ffff88810b7314d0
FS:  00007fe531e2c880(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000003 CR3: 0000000116671000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 force_page_cache_ra mm/readahead.c:360 [inline]
 page_cache_sync_ra+0x32b/0x3d0 mm/readahead.c:751
 page_cache_sync_readahead include/linux/pagemap.h:1259 [inline]
 filemap_get_pages mm/filemap.c:2706 [inline]
 filemap_read+0x6b6/0x23c0 mm/filemap.c:2801
 blkdev_read_iter+0x439/0x580 block/fops.c:668
 call_read_iter include/linux/fs.h:2276 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x46e/0x930 fs/read_write.c:470
 ksys_read+0x14a/0x260 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:621
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe5316a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffff16877d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fe531e2c880 RCX: 00007fe5316a7407
RDX: 0000000000000200 RSI: 00007fe531e27000 RDI: 0000000000000009
RBP: 0000560b9c8d7790 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000004000 R14: 0000560b9c8d4a98 R15: 00007fe531f5339c
 </TASK>
Modules linked in:
CR2: 0000000000000003
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_set_bit include/linux/instrumented.h:87 [inline]
RIP: 0010:set_bit include/asm-generic/bitops/instrumented-atomic.h:29 [inline]
RIP: 0010:do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Code: fd ff 48 3d 01 f0 ff ff 72 10 e8 7c 1e d2 ff 49 83 ee 01 73 78 e9 87 00 00 00 49 89 c4 48 89 c7 be 08 00 00 00 e8 d1 ba 17 00 <f0> 41 80 4c 24 03 10 4c 89 e7 48 83 c7 34 be 04 00 00 00 e8 b9 ba
RSP: 0018:ffffc90000ad7878 EFLAGS: 00010246
RAX: ffff8881180a0000 RBX: 0000000000000004 RCX: ffff8881180a0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000ad78c8 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc
R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: 0000000000000000
R13: 000000000000003b R14: 0000000000000000 R15: ffff88810b7314d0
FS:  00007fe531e2c880(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000003 CR3: 0000000116671000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	72 10                	jb     0x18
   8:	e8 7c 1e d2 ff       	call   0xffd21e89
   d:	49 83 ee 01          	sub    $0x1,%r14
  11:	73 78                	jae    0x8b
  13:	e9 87 00 00 00       	jmp    0x9f
  18:	49 89 c4             	mov    %rax,%r12
  1b:	48 89 c7             	mov    %rax,%rdi
  1e:	be 08 00 00 00       	mov    $0x8,%esi
  23:	e8 d1 ba 17 00       	call   0x17baf9
* 28:	f0 41 80 4c 24 03 10 	lock orb $0x10,0x3(%r12) <-- trapping instruction
  2f:	4c 89 e7             	mov    %r12,%rdi
  32:	48 83 c7 34          	add    $0x34,%rdi
  36:	be 04 00 00 00       	mov    $0x4,%esi
  3b:	e8                   	.byte 0xe8
  3c:	b9                   	.byte 0xb9
  3d:	ba                   	.byte 0xba