Extracting prog: 2m2.964007945s
Minimizing prog: 13m45.21901632s
Simplifying prog options: 0s
Extracting C: 32.567078128s
Simplifying C: 8m27.919717102s


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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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: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=51.303828276s, {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=51.303828276s, {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=51.303828276s, {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=51.303828276s, {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=51.303828276s, {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=51.303828276s, {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=51.303828276s, {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 24m48.669842826s
repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc000000003c: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000001e0-0x00000000000001e7]
CPU: 1 UID: 0 PID: 5819 Comm: syz-executor853 Not tainted 6.15.0-rc3-syzkaller-00283-gf1a3944c860b #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:kasan_byte_accessible+0x15/0x30 mm/kasan/generic.c:199
Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03 48 01 c7 <0f> b6 07 3c 07 0f 96 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc90003627b90 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: 00000000000001e0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b6e10ae RDI: dffffc000000003c
RBP: 00000000000001e0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8b6e10ae
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055557baa1380(0000) GS:ffff888124ae4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557baa1338 CR3: 000000002fcc2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __kasan_check_byte+0x13/0x50 mm/kasan/common.c:556
 kasan_check_byte include/linux/kasan.h:399 [inline]
 lock_acquire kernel/locking/lockdep.c:5840 [inline]
 lock_acquire+0xfc/0x350 kernel/locking/lockdep.c:5823
 down_read_killable+0x9e/0x4b0 kernel/locking/rwsem.c:1547
 mmap_read_lock_killable include/linux/mmap_lock.h:193 [inline]
 do_pagemap_scan+0x691/0xd00 fs/proc/task_mmu.c:2787
 do_pagemap_cmd+0x58/0x80 fs/proc/task_mmu.c:2840
 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/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7c8231cc39
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:00007ffd9e8a5d18 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7c8231cc39
RDX: 0000200000000100 RSI: 00000000c0606610 RDI: 0000000000000004
RBP: 000000000000dd0d R08: 00007ffd9e8a59c4 R09: 0000000000000006
R10: 0000000000000014 R11: 0000000000000246 R12: 00007ffd9e8a5d2c
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x15/0x30 mm/kasan/generic.c:199
Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03 48 01 c7 <0f> b6 07 3c 07 0f 96 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc90003627b90 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: 00000000000001e0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b6e10ae RDI: dffffc000000003c
RBP: 00000000000001e0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8b6e10ae
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055557baa1380(0000) GS:ffff888124ae4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557baa1338 CR3: 000000002fcc2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	0f 1f 00             	nopl   (%rax)
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	66 0f 1f 00          	nopw   (%rax)
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 c1 ef 03          	shr    $0x3,%rdi
  27:	48 01 c7             	add    %rax,%rdi
* 2a:	0f b6 07             	movzbl (%rdi),%eax <-- trapping instruction
  2d:	3c 07                	cmp    $0x7,%al
  2f:	0f 96 c0             	setbe  %al
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)

final repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc000000003c: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000001e0-0x00000000000001e7]
CPU: 1 UID: 0 PID: 5819 Comm: syz-executor853 Not tainted 6.15.0-rc3-syzkaller-00283-gf1a3944c860b #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:kasan_byte_accessible+0x15/0x30 mm/kasan/generic.c:199
Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03 48 01 c7 <0f> b6 07 3c 07 0f 96 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc90003627b90 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: 00000000000001e0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b6e10ae RDI: dffffc000000003c
RBP: 00000000000001e0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8b6e10ae
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055557baa1380(0000) GS:ffff888124ae4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557baa1338 CR3: 000000002fcc2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __kasan_check_byte+0x13/0x50 mm/kasan/common.c:556
 kasan_check_byte include/linux/kasan.h:399 [inline]
 lock_acquire kernel/locking/lockdep.c:5840 [inline]
 lock_acquire+0xfc/0x350 kernel/locking/lockdep.c:5823
 down_read_killable+0x9e/0x4b0 kernel/locking/rwsem.c:1547
 mmap_read_lock_killable include/linux/mmap_lock.h:193 [inline]
 do_pagemap_scan+0x691/0xd00 fs/proc/task_mmu.c:2787
 do_pagemap_cmd+0x58/0x80 fs/proc/task_mmu.c:2840
 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/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7c8231cc39
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:00007ffd9e8a5d18 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7c8231cc39
RDX: 0000200000000100 RSI: 00000000c0606610 RDI: 0000000000000004
RBP: 000000000000dd0d R08: 00007ffd9e8a59c4 R09: 0000000000000006
R10: 0000000000000014 R11: 0000000000000246 R12: 00007ffd9e8a5d2c
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x15/0x30 mm/kasan/generic.c:199
Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03 48 01 c7 <0f> b6 07 3c 07 0f 96 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc90003627b90 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: 00000000000001e0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b6e10ae RDI: dffffc000000003c
RBP: 00000000000001e0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8b6e10ae
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055557baa1380(0000) GS:ffff888124ae4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557baa1338 CR3: 000000002fcc2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	0f 1f 00             	nopl   (%rax)
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	66 0f 1f 00          	nopw   (%rax)
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 c1 ef 03          	shr    $0x3,%rdi
  27:	48 01 c7             	add    %rax,%rdi
* 2a:	0f b6 07             	movzbl (%rdi),%eax <-- trapping instruction
  2d:	3c 07                	cmp    $0x7,%al
  2f:	0f 96 c0             	setbe  %al
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)