Extracting prog: 5m8.406999855s
Minimizing prog: 1h9m32.361077522s
Simplifying prog options: 12m24.25809552s
Extracting C: 3m8.620068079s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program crashed: INFO: task syz.NUM.NUM:LINE blocked for more than NUM seconds.
single: successfully extracted reproducer
found reproducer with 7 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)

program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
brk(0x200000ffc000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
socket$nl_netfilter(0x10, 0x3, 0xc)
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
close(0xffffffffffffffff)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r0 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {}, 0x2c, {'wfdno', 0x3d, r0}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, 0x0, 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, 0x0)
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, 0x0, &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', 0x0, 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, 0x0)
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
program crashed: INFO: task syz-executor blocked for more than NUM seconds.
a never seen crash title: INFO: task syz-executor blocked for more than NUM seconds., ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program crashed: INFO: task syz.NUM.NUM:LINE blocked for more than NUM seconds.
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
program crashed: INFO: task syz-executor blocked for more than NUM seconds.
a never seen crash title: INFO: task syz-executor blocked for more than NUM seconds., ignore
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program crashed: INFO: task syz.NUM.NUM:LINE blocked for more than NUM seconds.
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program crashed: INFO: task syz.NUM.NUM:LINE blocked for more than NUM seconds.
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-close-socketpair$unix-socket$nl_netfilter-mount$9p_fd-prctl$PR_SET_MM-brk
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
close(r0)
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f00000001c0), 0x8080, &(0x7f0000000580)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}})
prctl$PR_SET_MM(0x23, 0x6, &(0x7f0000003000/0x3000)=nil)
brk(0x200000ffc000)

program crashed: INFO: task syz.NUM.NUM:LINE blocked for more than NUM seconds.
validation run: crashed=true
reproducing took 1h40m26.754545951s
repro crashed as (corrupted=false):
INFO: task syz.0.17:5994 blocked  for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17        state:D stack:26048 pid:5994  tgid:5994  ppid:5946   task_flags:0x400640 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5295 [inline]
 __schedule+0x1585/0x5310 kernel/sched/core.c:6907
 __schedule_loop kernel/sched/core.c:6989 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7004
 schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common+0x3c0/0x690 kernel/sched/completion.c:121
 wait_for_common kernel/sched/completion.c:132 [inline]
 wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:269
 coredump_wait fs/coredump.c:534 [inline]
 vfs_coredump+0x9c7/0x4280 fs/coredump.c:1197
 get_signal+0x1107/0x1330 kernel/signal.c:3019
 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:98 [inline]
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
 irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
 irqentry_exit+0x176/0x620 kernel/entry/common.c:219
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f67024514f7
RSP: 002b:00007ffd19ee3560 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 0000000000027cb8
RDX: 00007ffd19ee3580 RSI: 00007ffd19ee36b0 RDI: 000000000000000b
RBP: 00007f6702817da0 R08: 7fffffffffffffff R09: 3fffffffffffffff
R10: 4000000000000000 R11: 0000000000000000 R12: 000000000002819a
R13: 00007f670281609c R14: 0000000000027ec1 R15: 00007f6702816090
 </TASK>
INFO: task syz.1.18:6024 blocked  for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.18        state:D stack:26376 pid:6024  tgid:6024  ppid:6005   task_flags:0x400640 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5295 [inline]
 __schedule+0x1585/0x5310 kernel/sched/core.c:6907
 __schedule_loop kernel/sched/core.c:6989 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7004
 schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common+0x3c0/0x690 kernel/sched/completion.c:121
 wait_for_common kernel/sched/completion.c:132 [inline]
 wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:269
 coredump_wait fs/coredump.c:534 [inline]
 vfs_coredump+0x9c7/0x4280 fs/coredump.c:1197
 get_signal+0x1107/0x1330 kernel/signal.c:3019
 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:98 [inline]
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
 irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
 irqentry_exit+0x176/0x620 kernel/entry/common.c:219
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fa3634514f7
RSP: 002b:00007ffe904c04a0 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 000000000002bb38
RDX: 00007ffe904c04c0 RSI: 00007ffe904c05f0 RDI: 000000000000000b
RBP: 00007fa363817da0 R08: 7fffffffffffffff R09: 3fffffffffffffff
R10: 4000000000000000 R11: 0000000000000000 R12: 000000000002c1c4
R13: 00007fa36381609c R14: 000000000002beea R15: 00007fa363816090
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e960320 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
 #0: ffffffff8e960320 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:850 [inline]
 #0: ffffffff8e960320 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
2 locks held by getty/5577:
 #0: ffff88803388b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/6279:

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:347 [inline]
 watchdog+0x103d/0x1090 kernel/hung_task.c:516
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6279 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:deref_stack_reg+0x1c6/0x230 arch/x86/kernel/unwind_orc.c:424
Code: 08 00 00 49 89 c6 48 8b 5c 24 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 93 d6 b8 00 4c 89 33 b0 01 eb 02 31 c0 <48> 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d e9 47 97 44 0a cc 44 89
RSP: 0018:ffffc90000a07c60 EFLAGS: 00000246
RAX: 1ffff92000140f01 RBX: ffffc90000a07dc8 RCX: 0000000000000001
RDX: ffffc90000a07dc8 RSI: dffffc0000000000 RDI: ffffc9000472f2d0
RBP: 1ffff92000140fb1 R08: ffffc9000472f2d0 R09: 0000000000000000
R10: ffffc90000a07dd8 R11: fffff52000140fbd R12: 1ffff92000140fb2
R13: 1ffff92000140fb3 R14: ffffc9000472f7d0 R15: dffffc0000000000
FS:  000055555a857500(0000) GS:ffff888125115000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f61b7547e20 CR3: 0000000078ae2000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 unwind_next_frame+0x18c6/0x23c0 arch/x86/kernel/unwind_orc.c:-1
 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2667 [inline]
 slab_free mm/slub.c:6079 [inline]
 kfree+0x1c1/0x630 mm/slub.c:6396
 ieee80211_inform_bss+0xc75/0x1160 net/mac80211/scan.c:164
 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline]
 cfg80211_inform_single_bss_data+0xd08/0x1b70 net/wireless/scan.c:2373
 cfg80211_inform_bss_data+0x266/0x3c40 net/wireless/scan.c:3228
 cfg80211_inform_bss_frame_data+0x3c7/0x760 net/wireless/scan.c:3319
 ieee80211_bss_info_update+0x794/0xa40 net/mac80211/scan.c:230
 ieee80211_scan_rx+0x552/0xa40 net/mac80211/scan.c:364
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5305 [inline]
 ieee80211_rx_list+0x29e5/0x3710 net/mac80211/rx.c:5588
 ieee80211_rx_napi+0x1b1/0x3e0 net/mac80211/rx.c:5611
 ieee80211_rx include/net/mac80211.h:5267 [inline]
 ieee80211_handle_queued_frames+0xe8/0x1e0 net/mac80211/main.c:452
 tasklet_action_common+0x2da/0x4b0 kernel/softirq.c:929
 handle_softirqs+0x22a/0x870 kernel/softirq.c:626
 __do_softirq kernel/softirq.c:660 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:727
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:743
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2039 [inline]
RIP: 0010:vprintk_emit+0x45d/0x560 kernel/printk/printk.c:2427
Code: 0f 84 44 ff ff ff e8 82 28 21 00 fb eb 44 e8 7a 28 21 00 e8 35 ed 13 0a 4d 85 f6 74 94 e8 6b 28 21 00 fb 48 c7 c7 40 27 95 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 cb 16
RSP: 0018:ffffc9000472e9e0 EFLAGS: 00000293
RAX: ffffffff81a4c565 RBX: ffffffff81a4c3df RCX: ffff888036c6bc80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e952740
RBP: ffffc9000472ea90 R08: ffffffff903342b7 R09: 1ffffffff2066856
R10: dffffc0000000000 R11: fffffbfff2066857 R12: 0000000000000000
R13: 0000000000000029 R14: 0000000000000200 R15: 1ffff920008e5d40
 _printk+0xdd/0x130 kernel/printk/printk.c:2453
 netdev_info+0x11e/0x180 net/core/dev.c:12992
 netif_set_allmulti+0x1a8/0x360 net/core/dev.c:9628
 dev_set_allmulti+0x12b/0x260 net/core/dev_api.c:313
 br_add_if+0x308/0xeb0 net/bridge/br_if.c:592
 do_set_master+0x533/0x6d0 net/core/rtnetlink.c:2963
 do_setlink+0x1018/0x4590 net/core/rtnetlink.c:3165
 rtnl_changelink net/core/rtnetlink.c:3776 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3935 [inline]
 rtnl_newlink+0x15a9/0x1be0 net/core/rtnetlink.c:4072
 rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6958
 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:737
 __sock_sendmsg net/socket.c:752 [inline]
 __sys_sendto+0x3ff/0x590 net/socket.c:2221
 __do_sys_sendto net/socket.c:2228 [inline]
 __se_sys_sendto net/socket.c:2224 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2224
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f61b675b78e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffea60c8ac8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000055555a857500 RCX: 00007f61b675b78e
RDX: 0000000000000028 RSI: 00007f61b7544670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffea60c8b44 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f61b7544670 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	00 00                	add    %al,(%rax)
   2:	49 89 c6             	mov    %rax,%r14
   5:	48 8b 5c 24 18       	mov    0x18(%rsp),%rbx
   a:	48 89 d8             	mov    %rbx,%rax
   d:	48 c1 e8 03          	shr    $0x3,%rax
  11:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
  16:	74 08                	je     0x20
  18:	48 89 df             	mov    %rbx,%rdi
  1b:	e8 93 d6 b8 00       	call   0xb8d6b3
  20:	4c 89 33             	mov    %r14,(%rbx)
  23:	b0 01                	mov    $0x1,%al
  25:	eb 02                	jmp    0x29
  27:	31 c0                	xor    %eax,%eax
* 29:	48 83 c4 20          	add    $0x20,%rsp <-- trapping instruction
  2d:	5b                   	pop    %rbx
  2e:	41 5c                	pop    %r12
  30:	41 5d                	pop    %r13
  32:	41 5e                	pop    %r14
  34:	41 5f                	pop    %r15
  36:	5d                   	pop    %rbp
  37:	e9 47 97 44 0a       	jmp    0xa449783
  3c:	cc                   	int3
  3d:	44                   	rex.R
  3e:	89                   	.byte 0x89

final repro crashed as (corrupted=false):
INFO: task syz.0.17:5994 blocked  for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17        state:D stack:26048 pid:5994  tgid:5994  ppid:5946   task_flags:0x400640 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5295 [inline]
 __schedule+0x1585/0x5310 kernel/sched/core.c:6907
 __schedule_loop kernel/sched/core.c:6989 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7004
 schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common+0x3c0/0x690 kernel/sched/completion.c:121
 wait_for_common kernel/sched/completion.c:132 [inline]
 wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:269
 coredump_wait fs/coredump.c:534 [inline]
 vfs_coredump+0x9c7/0x4280 fs/coredump.c:1197
 get_signal+0x1107/0x1330 kernel/signal.c:3019
 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:98 [inline]
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
 irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
 irqentry_exit+0x176/0x620 kernel/entry/common.c:219
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f67024514f7
RSP: 002b:00007ffd19ee3560 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 0000000000027cb8
RDX: 00007ffd19ee3580 RSI: 00007ffd19ee36b0 RDI: 000000000000000b
RBP: 00007f6702817da0 R08: 7fffffffffffffff R09: 3fffffffffffffff
R10: 4000000000000000 R11: 0000000000000000 R12: 000000000002819a
R13: 00007f670281609c R14: 0000000000027ec1 R15: 00007f6702816090
 </TASK>
INFO: task syz.1.18:6024 blocked  for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.18        state:D stack:26376 pid:6024  tgid:6024  ppid:6005   task_flags:0x400640 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5295 [inline]
 __schedule+0x1585/0x5310 kernel/sched/core.c:6907
 __schedule_loop kernel/sched/core.c:6989 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7004
 schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common+0x3c0/0x690 kernel/sched/completion.c:121
 wait_for_common kernel/sched/completion.c:132 [inline]
 wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:269
 coredump_wait fs/coredump.c:534 [inline]
 vfs_coredump+0x9c7/0x4280 fs/coredump.c:1197
 get_signal+0x1107/0x1330 kernel/signal.c:3019
 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:98 [inline]
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
 irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
 irqentry_exit+0x176/0x620 kernel/entry/common.c:219
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fa3634514f7
RSP: 002b:00007ffe904c04a0 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 000000000002bb38
RDX: 00007ffe904c04c0 RSI: 00007ffe904c05f0 RDI: 000000000000000b
RBP: 00007fa363817da0 R08: 7fffffffffffffff R09: 3fffffffffffffff
R10: 4000000000000000 R11: 0000000000000000 R12: 000000000002c1c4
R13: 00007fa36381609c R14: 000000000002beea R15: 00007fa363816090
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e960320 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
 #0: ffffffff8e960320 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:850 [inline]
 #0: ffffffff8e960320 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
2 locks held by getty/5577:
 #0: ffff88803388b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/6279:

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:347 [inline]
 watchdog+0x103d/0x1090 kernel/hung_task.c:516
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6279 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:deref_stack_reg+0x1c6/0x230 arch/x86/kernel/unwind_orc.c:424
Code: 08 00 00 49 89 c6 48 8b 5c 24 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 93 d6 b8 00 4c 89 33 b0 01 eb 02 31 c0 <48> 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d e9 47 97 44 0a cc 44 89
RSP: 0018:ffffc90000a07c60 EFLAGS: 00000246
RAX: 1ffff92000140f01 RBX: ffffc90000a07dc8 RCX: 0000000000000001
RDX: ffffc90000a07dc8 RSI: dffffc0000000000 RDI: ffffc9000472f2d0
RBP: 1ffff92000140fb1 R08: ffffc9000472f2d0 R09: 0000000000000000
R10: ffffc90000a07dd8 R11: fffff52000140fbd R12: 1ffff92000140fb2
R13: 1ffff92000140fb3 R14: ffffc9000472f7d0 R15: dffffc0000000000
FS:  000055555a857500(0000) GS:ffff888125115000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f61b7547e20 CR3: 0000000078ae2000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 unwind_next_frame+0x18c6/0x23c0 arch/x86/kernel/unwind_orc.c:-1
 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2667 [inline]
 slab_free mm/slub.c:6079 [inline]
 kfree+0x1c1/0x630 mm/slub.c:6396
 ieee80211_inform_bss+0xc75/0x1160 net/mac80211/scan.c:164
 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline]
 cfg80211_inform_single_bss_data+0xd08/0x1b70 net/wireless/scan.c:2373
 cfg80211_inform_bss_data+0x266/0x3c40 net/wireless/scan.c:3228
 cfg80211_inform_bss_frame_data+0x3c7/0x760 net/wireless/scan.c:3319
 ieee80211_bss_info_update+0x794/0xa40 net/mac80211/scan.c:230
 ieee80211_scan_rx+0x552/0xa40 net/mac80211/scan.c:364
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5305 [inline]
 ieee80211_rx_list+0x29e5/0x3710 net/mac80211/rx.c:5588
 ieee80211_rx_napi+0x1b1/0x3e0 net/mac80211/rx.c:5611
 ieee80211_rx include/net/mac80211.h:5267 [inline]
 ieee80211_handle_queued_frames+0xe8/0x1e0 net/mac80211/main.c:452
 tasklet_action_common+0x2da/0x4b0 kernel/softirq.c:929
 handle_softirqs+0x22a/0x870 kernel/softirq.c:626
 __do_softirq kernel/softirq.c:660 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:727
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:743
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2039 [inline]
RIP: 0010:vprintk_emit+0x45d/0x560 kernel/printk/printk.c:2427
Code: 0f 84 44 ff ff ff e8 82 28 21 00 fb eb 44 e8 7a 28 21 00 e8 35 ed 13 0a 4d 85 f6 74 94 e8 6b 28 21 00 fb 48 c7 c7 40 27 95 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 cb 16
RSP: 0018:ffffc9000472e9e0 EFLAGS: 00000293
RAX: ffffffff81a4c565 RBX: ffffffff81a4c3df RCX: ffff888036c6bc80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e952740
RBP: ffffc9000472ea90 R08: ffffffff903342b7 R09: 1ffffffff2066856
R10: dffffc0000000000 R11: fffffbfff2066857 R12: 0000000000000000
R13: 0000000000000029 R14: 0000000000000200 R15: 1ffff920008e5d40
 _printk+0xdd/0x130 kernel/printk/printk.c:2453
 netdev_info+0x11e/0x180 net/core/dev.c:12992
 netif_set_allmulti+0x1a8/0x360 net/core/dev.c:9628
 dev_set_allmulti+0x12b/0x260 net/core/dev_api.c:313
 br_add_if+0x308/0xeb0 net/bridge/br_if.c:592
 do_set_master+0x533/0x6d0 net/core/rtnetlink.c:2963
 do_setlink+0x1018/0x4590 net/core/rtnetlink.c:3165
 rtnl_changelink net/core/rtnetlink.c:3776 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3935 [inline]
 rtnl_newlink+0x15a9/0x1be0 net/core/rtnetlink.c:4072
 rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6958
 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:737
 __sock_sendmsg net/socket.c:752 [inline]
 __sys_sendto+0x3ff/0x590 net/socket.c:2221
 __do_sys_sendto net/socket.c:2228 [inline]
 __se_sys_sendto net/socket.c:2224 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2224
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f61b675b78e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffea60c8ac8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000055555a857500 RCX: 00007f61b675b78e
RDX: 0000000000000028 RSI: 00007f61b7544670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffea60c8b44 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f61b7544670 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	00 00                	add    %al,(%rax)
   2:	49 89 c6             	mov    %rax,%r14
   5:	48 8b 5c 24 18       	mov    0x18(%rsp),%rbx
   a:	48 89 d8             	mov    %rbx,%rax
   d:	48 c1 e8 03          	shr    $0x3,%rax
  11:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
  16:	74 08                	je     0x20
  18:	48 89 df             	mov    %rbx,%rdi
  1b:	e8 93 d6 b8 00       	call   0xb8d6b3
  20:	4c 89 33             	mov    %r14,(%rbx)
  23:	b0 01                	mov    $0x1,%al
  25:	eb 02                	jmp    0x29
  27:	31 c0                	xor    %eax,%eax
* 29:	48 83 c4 20          	add    $0x20,%rsp <-- trapping instruction
  2d:	5b                   	pop    %rbx
  2e:	41 5c                	pop    %r12
  30:	41 5d                	pop    %r13
  32:	41 5e                	pop    %r14
  34:	41 5f                	pop    %r15
  36:	5d                   	pop    %rbp
  37:	e9 47 97 44 0a       	jmp    0xa449783
  3c:	cc                   	int3
  3d:	44                   	rex.R
  3e:	89                   	.byte 0x89