Extracting prog: 1m10.586682938s
Minimizing prog: 7m47.91876114s
Simplifying prog options: 0s
Extracting C: 19.489440514s
Simplifying C: 3m48.594620485s


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: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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f00000001c0)='proc\x00', 0x801, 0x0)
r1 = syz_clone(0x0, 0x0, 0x36, 0x0, 0x0, 0x0)
r2 = syz_open_procfs$pagemap(r1, &(0x7f0000000680))
ioctl$PAGEMAP_SCAN(r2, 0xc0606610, &(0x7f0000000100)={0x60, 0x0, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000fff000/0x1000)=nil, 0x100000000, 0x0, 0x0, 0x8000000000000000, 0x15, 0x4, 0x8, 0x48})

program crashed: general protection fault in do_pagemap_scan
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
testing program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f00000001c0)='proc\x00', 0x801, 0x0)
r1 = syz_clone(0x0, 0x0, 0x36, 0x0, 0x0, 0x0)
syz_open_procfs$pagemap(r1, &(0x7f0000000680))

program did not crash
testing program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-ioctl$PAGEMAP_SCAN
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f00000001c0)='proc\x00', 0x801, 0x0)
syz_clone(0x0, 0x0, 0x36, 0x0, 0x0, 0x0)
ioctl$PAGEMAP_SCAN(0xffffffffffffffff, 0xc0606610, &(0x7f0000000100)={0x60, 0x0, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000fff000/0x1000)=nil, 0x100000000, 0x0, 0x0, 0x8000000000000000, 0x15, 0x4, 0x8, 0x48})

program did not crash
testing program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f00000001c0)='proc\x00', 0x801, 0x0)
r1 = syz_open_procfs$pagemap(0x0, &(0x7f0000000680))
ioctl$PAGEMAP_SCAN(r1, 0xc0606610, &(0x7f0000000100)={0x60, 0x0, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000fff000/0x1000)=nil, 0x100000000, 0x0, 0x0, 0x8000000000000000, 0x15, 0x4, 0x8, 0x48})

program did not crash
testing program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
r1 = syz_clone(0x0, 0x0, 0x36, 0x0, 0x0, 0x0)
r2 = syz_open_procfs$pagemap(r1, &(0x7f0000000680))
ioctl$PAGEMAP_SCAN(r2, 0xc0606610, &(0x7f0000000100)={0x60, 0x0, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000fff000/0x1000)=nil, 0x100000000, 0x0, 0x0, 0x8000000000000000, 0x15, 0x4, 0x8, 0x48})

program did not crash
testing program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
detailed listing:
executing program 0:
syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f00000001c0)='proc\x00', 0x801, 0x0)
r0 = syz_clone(0x0, 0x0, 0x36, 0x0, 0x0, 0x0)
r1 = syz_open_procfs$pagemap(r0, &(0x7f0000000680))
ioctl$PAGEMAP_SCAN(r1, 0xc0606610, &(0x7f0000000100)={0x60, 0x0, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000fff000/0x1000)=nil, 0x100000000, 0x0, 0x0, 0x8000000000000000, 0x15, 0x4, 0x8, 0x48})

program did not crash
testing program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
detailed listing:
executing program 0:
fchdir(0xffffffffffffffff)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f00000001c0)='proc\x00', 0x801, 0x0)
r0 = syz_clone(0x0, 0x0, 0x36, 0x0, 0x0, 0x0)
r1 = syz_open_procfs$pagemap(r0, &(0x7f0000000680))
ioctl$PAGEMAP_SCAN(r1, 0xc0606610, &(0x7f0000000100)={0x60, 0x0, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000fff000/0x1000)=nil, 0x100000000, 0x0, 0x0, 0x8000000000000000, 0x15, 0x4, 0x8, 0x48})

program did not crash
testing program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, 0x0)
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f00000001c0)='proc\x00', 0x801, 0x0)
r1 = syz_clone(0x0, 0x0, 0x36, 0x0, 0x0, 0x0)
r2 = syz_open_procfs$pagemap(r1, &(0x7f0000000680))
ioctl$PAGEMAP_SCAN(r2, 0xc0606610, &(0x7f0000000100)={0x60, 0x0, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000fff000/0x1000)=nil, 0x100000000, 0x0, 0x0, 0x8000000000000000, 0x15, 0x4, 0x8, 0x48})

program did not crash
testing program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, 0x0, &(0x7f00000001c0)='proc\x00', 0x801, 0x0)
r1 = syz_clone(0x0, 0x0, 0x36, 0x0, 0x0, 0x0)
r2 = syz_open_procfs$pagemap(r1, &(0x7f0000000680))
ioctl$PAGEMAP_SCAN(r2, 0xc0606610, &(0x7f0000000100)={0x60, 0x0, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000fff000/0x1000)=nil, 0x100000000, 0x0, 0x0, 0x8000000000000000, 0x15, 0x4, 0x8, 0x48})

program did not crash
testing program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', 0x0, 0x801, 0x0)
r1 = syz_clone(0x0, 0x0, 0x36, 0x0, 0x0, 0x0)
r2 = syz_open_procfs$pagemap(r1, &(0x7f0000000680))
ioctl$PAGEMAP_SCAN(r2, 0xc0606610, &(0x7f0000000100)={0x60, 0x0, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000fff000/0x1000)=nil, 0x100000000, 0x0, 0x0, 0x8000000000000000, 0x15, 0x4, 0x8, 0x48})

program did not crash
testing program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f00000001c0)='proc\x00', 0x801, 0x0)
r1 = syz_clone(0x0, 0x0, 0x36, 0x0, 0x0, 0x0)
r2 = syz_open_procfs$pagemap(r1, 0x0)
ioctl$PAGEMAP_SCAN(r2, 0xc0606610, &(0x7f0000000100)={0x60, 0x0, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000fff000/0x1000)=nil, 0x100000000, 0x0, 0x0, 0x8000000000000000, 0x15, 0x4, 0x8, 0x48})

program did not crash
testing program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f00000001c0)='proc\x00', 0x801, 0x0)
r1 = syz_clone(0x0, 0x0, 0x36, 0x0, 0x0, 0x0)
r2 = syz_open_procfs$pagemap(r1, &(0x7f0000000680))
ioctl$PAGEMAP_SCAN(r2, 0xc0606610, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
program crashed: general protection fault in do_pagemap_scan
simplifying C reproducer
testing compiled C program (duration=37.25719764s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
program crashed: general protection fault in do_pagemap_scan
testing compiled C program (duration=37.25719764s, {Threaded:false 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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
program did not crash
testing compiled C program (duration=37.25719764s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
program crashed: general protection fault in do_pagemap_scan
testing compiled C program (duration=37.25719764s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
program crashed: general protection fault in do_pagemap_scan
testing compiled C program (duration=37.25719764s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
program crashed: general protection fault in do_pagemap_scan
testing compiled C program (duration=37.25719764s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
program crashed: general protection fault in do_pagemap_scan
testing compiled C program (duration=37.25719764s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
program crashed: general protection fault in do_pagemap_scan
testing compiled C program (duration=37.25719764s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_clone-syz_open_procfs$pagemap-ioctl$PAGEMAP_SCAN
program crashed: general protection fault in do_pagemap_scan
reproducing took 13m6.589527948s
repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000033: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000198-0x000000000000019f]
CPU: 0 UID: 0 PID: 5940 Comm: syz-executor810 Not tainted 6.12.0-syzkaller-00233-g9fb2cfa4635a #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__lock_acquire+0xe1/0x3ce0 kernel/locking/lockdep.c:5065
Code: d0 7c 08 84 d2 0f 85 96 14 00 00 8b 0d 10 66 f5 0e 85 c9 0f 84 dd 0d 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 02 2d 00 00 49 8b 04 24 48 3d 20 37 7a 93 0f 84
RSP: 0018:ffffc90003c9fa08 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000033 RSI: 1ffff92000793f53 RDI: 0000000000000198
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff905f90cf R11: 0000000000000001 R12: 0000000000000198
R13: 0000000000000198 R14: 0000000000000000 R15: ffff88802778a440
FS:  0000555560769380(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555560769338 CR3: 0000000024476000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825
 down_read_killable+0x9d/0x380 kernel/locking/rwsem.c:1547
 mmap_read_lock_killable include/linux/mmap_lock.h:153 [inline]
 do_pagemap_scan+0x6a3/0xcd0 fs/proc/task_mmu.c:2766
 do_pagemap_cmd+0x58/0x80 fs/proc/task_mmu.c:2819
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7effcf32bbf9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffce974ff28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007effcf32bbf9
RDX: 0000000020000100 RSI: 00000000c0606610 RDI: 0000000000000004
RBP: 000000000000a82c R08: 00007ffce974fbd4 R09: 0000000000000006
R10: 0000000000000014 R11: 0000000000000246 R12: 00007ffce974ff3c
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0xe1/0x3ce0 kernel/locking/lockdep.c:5065
Code: d0 7c 08 84 d2 0f 85 96 14 00 00 8b 0d 10 66 f5 0e 85 c9 0f 84 dd 0d 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 02 2d 00 00 49 8b 04 24 48 3d 20 37 7a 93 0f 84
RSP: 0018:ffffc90003c9fa08 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000033 RSI: 1ffff92000793f53 RDI: 0000000000000198
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff905f90cf R11: 0000000000000001 R12: 0000000000000198
R13: 0000000000000198 R14: 0000000000000000 R15: ffff88802778a440
FS:  0000555560769380(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555560769338 CR3: 0000000024476000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	d0 7c 08 84          	sarb   -0x7c(%rax,%rcx,1)
   4:	d2 0f                	rorb   %cl,(%rdi)
   6:	85 96 14 00 00 8b    	test   %edx,-0x74ffffec(%rsi)
   c:	0d 10 66 f5 0e       	or     $0xef56610,%eax
  11:	85 c9                	test   %ecx,%ecx
  13:	0f 84 dd 0d 00 00    	je     0xdf6
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	4c 89 e2             	mov    %r12,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 02 2d 00 00    	jne    0x2d36
  34:	49 8b 04 24          	mov    (%r12),%rax
  38:	48 3d 20 37 7a 93    	cmp    $0xffffffff937a3720,%rax
  3e:	0f                   	.byte 0xf
  3f:	84                   	.byte 0x84

final repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000033: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000198-0x000000000000019f]
CPU: 0 UID: 0 PID: 5940 Comm: syz-executor810 Not tainted 6.12.0-syzkaller-00233-g9fb2cfa4635a #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__lock_acquire+0xe1/0x3ce0 kernel/locking/lockdep.c:5065
Code: d0 7c 08 84 d2 0f 85 96 14 00 00 8b 0d 10 66 f5 0e 85 c9 0f 84 dd 0d 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 02 2d 00 00 49 8b 04 24 48 3d 20 37 7a 93 0f 84
RSP: 0018:ffffc90003c9fa08 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000033 RSI: 1ffff92000793f53 RDI: 0000000000000198
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff905f90cf R11: 0000000000000001 R12: 0000000000000198
R13: 0000000000000198 R14: 0000000000000000 R15: ffff88802778a440
FS:  0000555560769380(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555560769338 CR3: 0000000024476000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825
 down_read_killable+0x9d/0x380 kernel/locking/rwsem.c:1547
 mmap_read_lock_killable include/linux/mmap_lock.h:153 [inline]
 do_pagemap_scan+0x6a3/0xcd0 fs/proc/task_mmu.c:2766
 do_pagemap_cmd+0x58/0x80 fs/proc/task_mmu.c:2819
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7effcf32bbf9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffce974ff28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007effcf32bbf9
RDX: 0000000020000100 RSI: 00000000c0606610 RDI: 0000000000000004
RBP: 000000000000a82c R08: 00007ffce974fbd4 R09: 0000000000000006
R10: 0000000000000014 R11: 0000000000000246 R12: 00007ffce974ff3c
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0xe1/0x3ce0 kernel/locking/lockdep.c:5065
Code: d0 7c 08 84 d2 0f 85 96 14 00 00 8b 0d 10 66 f5 0e 85 c9 0f 84 dd 0d 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 02 2d 00 00 49 8b 04 24 48 3d 20 37 7a 93 0f 84
RSP: 0018:ffffc90003c9fa08 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000033 RSI: 1ffff92000793f53 RDI: 0000000000000198
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff905f90cf R11: 0000000000000001 R12: 0000000000000198
R13: 0000000000000198 R14: 0000000000000000 R15: ffff88802778a440
FS:  0000555560769380(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555560769338 CR3: 0000000024476000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	d0 7c 08 84          	sarb   -0x7c(%rax,%rcx,1)
   4:	d2 0f                	rorb   %cl,(%rdi)
   6:	85 96 14 00 00 8b    	test   %edx,-0x74ffffec(%rsi)
   c:	0d 10 66 f5 0e       	or     $0xef56610,%eax
  11:	85 c9                	test   %ecx,%ecx
  13:	0f 84 dd 0d 00 00    	je     0xdf6
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	4c 89 e2             	mov    %r12,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 02 2d 00 00    	jne    0x2d36
  34:	49 8b 04 24          	mov    (%r12),%rax
  38:	48 3d 20 37 7a 93    	cmp    $0xffffffff937a3720,%rax
  3e:	0f                   	.byte 0xf
  3f:	84                   	.byte 0x84