Extracting prog: 3m48.271553167s
Minimizing prog: 35m51.703006703s
Simplifying prog options: 3m43.523535535s
Extracting C: 2m12.048918995s
Simplifying C: 0s
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mbind-mkdirat-mount$bind-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mbind(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x8005, &(0x7f0000000000)=0x3f, 0x9, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
mount$bind(0x0, &(0x7f00000005c0)='./file0\x00', 0x0, 0x100000, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mbind-mkdirat-mount$bind-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mbind(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x8005, &(0x7f0000000000)=0x3f, 0x9, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
mount$bind(0x0, &(0x7f00000005c0)='./file0\x00', 0x0, 0x100000, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program crashed: general protection fault in lock_sock_nested
single: successfully extracted reproducer
found reproducer with 10 syscalls
minimizing guilty program
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mbind-mkdirat-mount$bind-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll
detailed listing:
executing program 0:
mbind(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x8005, &(0x7f0000000000)=0x3f, 0x9, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
mount$bind(0x0, &(0x7f00000005c0)='./file0\x00', 0x0, 0x100000, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mbind-mkdirat-mount$bind-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-mount$bind
detailed listing:
executing program 0:
mbind(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x8005, &(0x7f0000000000)=0x3f, 0x9, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
mount$bind(0x0, &(0x7f00000005c0)='./file0\x00', 0x0, 0x100000, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mbind-mkdirat-mount$bind-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-ppoll-mount$bind
detailed listing:
executing program 0:
mbind(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x8005, &(0x7f0000000000)=0x3f, 0x9, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
mount$bind(0x0, &(0x7f00000005c0)='./file0\x00', 0x0, 0x100000, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mbind-mkdirat-mount$bind-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mbind(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x8005, &(0x7f0000000000)=0x3f, 0x9, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
mount$bind(0x0, &(0x7f00000005c0)='./file0\x00', 0x0, 0x100000, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mbind-mkdirat-mount$bind-mount$bind-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mbind(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x8005, &(0x7f0000000000)=0x3f, 0x9, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
mount$bind(0x0, &(0x7f00000005c0)='./file0\x00', 0x0, 0x100000, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mbind-mkdirat-mount$bind-mount$bind-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mbind(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x8005, &(0x7f0000000000)=0x3f, 0x9, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
mount$bind(0x0, &(0x7f00000005c0)='./file0\x00', 0x0, 0x100000, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(0xffffffffffffffff, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(0xffffffffffffffff, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mbind-mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mbind(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x8005, &(0x7f0000000000)=0x3f, 0x9, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program crashed: general protection fault in lock_sock_nested
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mbind-mkdirat-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mbind(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x8005, &(0x7f0000000000)=0x3f, 0x9, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mbind-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mbind(&(0x7f0000ffc000/0x3000)=nil, 0x3000, 0x8005, &(0x7f0000000000)=0x3f, 0x9, 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program crashed: general protection fault in lock_sock_nested
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(0x0, &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', 0x0, 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, &(0x7f0000000100), &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, 0x0, &(0x7f0000000000))
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program crashed: general protection fault in lock_sock_nested
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, 0x0, 0x0)
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program crashed: general protection fault in lock_sock_nested
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, 0x0, 0x0)
bind$bt_l2cap(r0, 0x0, 0x0)
listen(r0, 0x0)
ppoll(&(0x7f0000000d40)=[{}], 0x1, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, 0x0, 0x0)
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(0x0, 0x0, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program crashed: general protection fault in lock_sock_nested
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, 0x0, 0x0)
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(0x0, 0x0, 0x0, 0x0, 0x0)
mount$bind(0x0, &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, 0x0, 0x0)
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(0x0, 0x0, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', 0x0, 0x0, 0x89101a, 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
program did not crash
simplifying guilty program options
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, 0x0, 0x0)
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(0x0, 0x0, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, 0x0, 0x0)
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(0x0, 0x0, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, 0x0, 0x0)
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(0x0, 0x0, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program crashed: general protection fault in lock_sock_nested
validation run: crashed=true
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, 0x0, 0x0)
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(0x0, 0x0, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program crashed: general protection fault in lock_sock_nested
validation run: crashed=true
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$bind-syz_init_net_socket$bt_l2cap-syz_io_uring_setup-bind$bt_l2cap-listen-ppoll-mount$bind
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0)
mount$bind(&(0x7f00000002c0)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
syz_io_uring_setup(0x5165, 0x0, 0x0, 0x0)
bind$bt_l2cap(r0, &(0x7f0000001180)={0x1f, 0x0, @any, 0x3}, 0xe)
listen(r0, 0x0)
ppoll(0x0, 0x0, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000300)='./file0/../file0\x00', &(0x7f0000000340)='./file0/file0\x00', 0x0, 0x89101a, 0x0)
program crashed: general protection fault in lock_sock_nested
validation run: crashed=true
reproducing took 50m3.388153447s
repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc000000006b: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000358-0x000000000000035f]
CPU: 1 UID: 0 PID: 6024 Comm: kworker/1:6 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: events l2cap_info_timeout
RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:210
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 d0 8f a3 08 cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc90003a87788 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff889cdf9e RCX: 89f631b6f8b6db00
RDX: 0000000000000000 RSI: ffffffff889cdf9e RDI: 000000000000006b
RBP: ffffffff89ca0975 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff89ca0930 R12: 0000000000000000
R13: 0000000000000358 R14: 0000000000000358 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff888126efc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb3e27d6e9c CR3: 000000000d3a6000 CR4: 00000000003526f0
Call Trace:
__kasan_check_byte+0x12/0x40 mm/kasan/common.c:579
kasan_check_byte include/linux/kasan.h:401 [inline]
lock_acquire+0x8d/0x360 kernel/locking/lockdep.c:5842
lock_sock_nested+0x3e/0x130 net/core/sock.c:3720
lock_sock include/net/sock.h:1679 [inline]
l2cap_sock_ready_cb+0x45/0x140 net/bluetooth/l2cap_sock.c:1677
l2cap_chan_ready net/bluetooth/l2cap_core.c:1263 [inline]
l2cap_conn_start+0x76d/0xe50 net/bluetooth/l2cap_core.c:1512
l2cap_info_timeout+0x68/0xa0 net/bluetooth/l2cap_core.c:1669
process_one_work kernel/workqueue.c:3263 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:210
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 d0 8f a3 08 cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc90003a87788 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff889cdf9e RCX: 89f631b6f8b6db00
RDX: 0000000000000000 RSI: ffffffff889cdf9e RDI: 000000000000006b
RBP: ffffffff89ca0975 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff89ca0930 R12: 0000000000000000
R13: 0000000000000358 R14: 0000000000000358 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff888126efc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb3e27d6e9c CR3: 000000000d3a6000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
7: 00
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: 90 nop
16: 90 nop
17: 90 nop
18: 0f 1f 40 d6 nopl -0x2a(%rax)
1c: 48 c1 ef 03 shr $0x3,%rdi
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 0f b6 04 07 movzbl (%rdi,%rax,1),%eax <-- trapping instruction
2e: 3c 08 cmp $0x8,%al
30: 0f 92 c0 setb %al
33: e9 d0 8f a3 08 jmp 0x8a39008
38: cc int3
39: 66 data16
3a: 66 data16
3b: 66 data16
3c: 66 data16
3d: 66 data16
3e: 66 data16
3f: 2e cs
final repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc000000006b: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000358-0x000000000000035f]
CPU: 1 UID: 0 PID: 6024 Comm: kworker/1:6 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: events l2cap_info_timeout
RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:210
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 d0 8f a3 08 cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc90003a87788 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff889cdf9e RCX: 89f631b6f8b6db00
RDX: 0000000000000000 RSI: ffffffff889cdf9e RDI: 000000000000006b
RBP: ffffffff89ca0975 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff89ca0930 R12: 0000000000000000
R13: 0000000000000358 R14: 0000000000000358 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff888126efc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb3e27d6e9c CR3: 000000000d3a6000 CR4: 00000000003526f0
Call Trace:
__kasan_check_byte+0x12/0x40 mm/kasan/common.c:579
kasan_check_byte include/linux/kasan.h:401 [inline]
lock_acquire+0x8d/0x360 kernel/locking/lockdep.c:5842
lock_sock_nested+0x3e/0x130 net/core/sock.c:3720
lock_sock include/net/sock.h:1679 [inline]
l2cap_sock_ready_cb+0x45/0x140 net/bluetooth/l2cap_sock.c:1677
l2cap_chan_ready net/bluetooth/l2cap_core.c:1263 [inline]
l2cap_conn_start+0x76d/0xe50 net/bluetooth/l2cap_core.c:1512
l2cap_info_timeout+0x68/0xa0 net/bluetooth/l2cap_core.c:1669
process_one_work kernel/workqueue.c:3263 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:210
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 d0 8f a3 08 cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc90003a87788 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff889cdf9e RCX: 89f631b6f8b6db00
RDX: 0000000000000000 RSI: ffffffff889cdf9e RDI: 000000000000006b
RBP: ffffffff89ca0975 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff89ca0930 R12: 0000000000000000
R13: 0000000000000358 R14: 0000000000000358 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff888126efc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb3e27d6e9c CR3: 000000000d3a6000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
7: 00
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: 90 nop
16: 90 nop
17: 90 nop
18: 0f 1f 40 d6 nopl -0x2a(%rax)
1c: 48 c1 ef 03 shr $0x3,%rdi
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 0f b6 04 07 movzbl (%rdi,%rax,1),%eax <-- trapping instruction
2e: 3c 08 cmp $0x8,%al
30: 0f 92 c0 setb %al
33: e9 d0 8f a3 08 jmp 0x8a39008
38: cc int3
39: 66 data16
3a: 66 data16
3b: 66 data16
3c: 66 data16
3d: 66 data16
3e: 66 data16
3f: 2e cs