Extracting prog: 2m25.507802395s
Minimizing prog: 19m39.358280631s
Simplifying prog options: 4m47.553026621s
Extracting C: 1m46.740449469s
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: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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-bpf$PROG_LOAD-sched_setscheduler-socket$alg-bind$alg-shmat-madvise-shmctl$SHM_LOCK
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
bpf$PROG_LOAD(0x5, &(0x7f0000000b00)={0x11, 0xf, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
sched_setscheduler(0x0, 0x2, 0x0)
r1 = socket$alg(0x26, 0x5, 0x0)
bind$alg(r1, &(0x7f0000000080)={0x26, 'rng\x00', 0x0, 0x0, 'jitterentropy_rng\x00'}, 0x58)
shmat(0x0, &(0x7f0000ffc000/0x2000)=nil, 0x4000)
madvise(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0x16)
shmctl$SHM_LOCK(0x0, 0xb)

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: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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-bpf$PROG_LOAD-sched_setscheduler-socket$alg-bind$alg-shmat-madvise-shmctl$SHM_LOCK
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
bpf$PROG_LOAD(0x5, &(0x7f0000000b00)={0x11, 0xf, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
sched_setscheduler(0x0, 0x2, 0x0)
r1 = socket$alg(0x26, 0x5, 0x0)
bind$alg(r1, &(0x7f0000000080)={0x26, 'rng\x00', 0x0, 0x0, 'jitterentropy_rng\x00'}, 0x58)
shmat(0x0, &(0x7f0000ffc000/0x2000)=nil, 0x4000)
madvise(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0x16)
shmctl$SHM_LOCK(0x0, 0xb)

program crashed: general protection fault in lock_sock_nested
single: successfully extracted reproducer
found reproducer with 12 syscalls
minimizing guilty program
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-bpf$PROG_LOAD-sched_setscheduler-socket$alg-bind$alg-shmat-madvise
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
bpf$PROG_LOAD(0x5, &(0x7f0000000b00)={0x11, 0xf, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
sched_setscheduler(0x0, 0x2, 0x0)
r1 = socket$alg(0x26, 0x5, 0x0)
bind$alg(r1, &(0x7f0000000080)={0x26, 'rng\x00', 0x0, 0x0, 'jitterentropy_rng\x00'}, 0x58)
shmat(0x0, &(0x7f0000ffc000/0x2000)=nil, 0x4000)
madvise(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0x16)

program crashed: general protection fault in lock_sock_nested
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-bpf$PROG_LOAD-sched_setscheduler-socket$alg-bind$alg-shmat
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
bpf$PROG_LOAD(0x5, &(0x7f0000000b00)={0x11, 0xf, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
sched_setscheduler(0x0, 0x2, 0x0)
r1 = socket$alg(0x26, 0x5, 0x0)
bind$alg(r1, &(0x7f0000000080)={0x26, 'rng\x00', 0x0, 0x0, 'jitterentropy_rng\x00'}, 0x58)
shmat(0x0, &(0x7f0000ffc000/0x2000)=nil, 0x4000)

program crashed: general protection fault in lock_sock_nested
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-bpf$PROG_LOAD-sched_setscheduler-socket$alg-bind$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
bpf$PROG_LOAD(0x5, &(0x7f0000000b00)={0x11, 0xf, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
sched_setscheduler(0x0, 0x2, 0x0)
r1 = socket$alg(0x26, 0x5, 0x0)
bind$alg(r1, &(0x7f0000000080)={0x26, 'rng\x00', 0x0, 0x0, 'jitterentropy_rng\x00'}, 0x58)

program crashed: general protection fault in lock_sock_nested
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-bpf$PROG_LOAD-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
bpf$PROG_LOAD(0x5, &(0x7f0000000b00)={0x11, 0xf, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program crashed: general protection fault in lock_sock_nested
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-bpf$PROG_LOAD-sched_setscheduler
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
bpf$PROG_LOAD(0x5, &(0x7f0000000b00)={0x11, 0xf, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
sched_setscheduler(0x0, 0x2, 0x0)

program did not crash
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-bpf$PROG_LOAD-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
bpf$PROG_LOAD(0x5, &(0x7f0000000b00)={0x11, 0xf, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$alg(0x26, 0x5, 0x0)

program did not crash
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program crashed: general protection fault in lock_sock_nested
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program did not crash
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program did not crash
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program did not crash
testing program (duration=1m40s, {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}}): syz_clone-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
bind$bt_l2cap(0xffffffffffffffff, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(0xffffffffffffffff, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program did not crash
testing program (duration=1m40s, {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}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program did not crash
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, 0x0, 0x0)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
program did not crash
simplifying guilty program options
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program crashed: general protection fault in lock_sock_nested
extracting C reproducer
testing compiled C program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program did not crash
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program crashed: general protection fault in lock_sock_nested
validation run: crashed=true
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program crashed: general protection fault in lock_sock_nested
validation run: crashed=true
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program did not crash
validation run: crashed=false
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program did not crash
validation run: crashed=false
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program did not crash
validation run: crashed=false
testing program (duration=1m40s, {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}}): syz_clone-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-bpf$MAP_CREATE_RINGBUF-sched_setscheduler-socket$alg
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)
bind$bt_l2cap(r0, &(0x7f00000007c0)={0x1f, 0x0, @any, 0x4}, 0xe)
listen(r0, 0x8)
bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48)
sched_setscheduler(0x0, 0x2, 0x0)
socket$alg(0x26, 0x5, 0x0)

program crashed: general protection fault in lock_sock_nested
validation run: crashed=true
reproducing took 37m39.146253196s
repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc000000004b: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000258-0x000000000000025f]
CPU: 2 UID: 0 PID: 63 Comm: kworker/u33:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: hci4 hci_rx_work
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:ffffc90000b0f840 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: 0000000000000258 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8922a161 RDI: dffffc000000004b
RBP: 0000000000000258 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90000b0f930 R11: 0000000000002b81 R12: ffffffff8922a161
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880d7055000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc2c2c1371a CR3: 0000000031c58000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __kasan_check_byte+0x13/0x50 mm/kasan/common.c:567
 kasan_check_byte include/linux/kasan.h:399 [inline]
 lock_acquire kernel/locking/lockdep.c:5842 [inline]
 lock_acquire+0xfc/0x350 kernel/locking/lockdep.c:5825
 lock_sock_nested+0x41/0xf0 net/core/sock.c:3711
 lock_sock include/net/sock.h:1669 [inline]
 l2cap_sock_new_connection_cb+0x4c/0x240 net/bluetooth/l2cap_sock.c:1476
 l2cap_connect_cfm+0x4c4/0xf80 net/bluetooth/l2cap_core.c:7287
 hci_connect_cfm include/net/bluetooth/hci_core.h:2103 [inline]
 hci_remote_features_evt+0x4dd/0x970 net/bluetooth/hci_event.c:3728
 hci_event_func net/bluetooth/hci_event.c:7569 [inline]
 hci_event_packet+0xa10/0x11c0 net/bluetooth/hci_event.c:7623
 hci_rx_work+0x2c5/0x16b0 net/bluetooth/hci_core.c:4071
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x56a/0x730 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </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:ffffc90000b0f840 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: 0000000000000258 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8922a161 RDI: dffffc000000004b
RBP: 0000000000000258 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90000b0f930 R11: 0000000000002b81 R12: ffffffff8922a161
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880d7055000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc2c2c1371a CR3: 000000000df82000 CR4: 0000000000352ef0
----------------
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 0xdffffc000000004b: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000258-0x000000000000025f]
CPU: 2 UID: 0 PID: 63 Comm: kworker/u33:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: hci4 hci_rx_work
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:ffffc90000b0f840 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: 0000000000000258 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8922a161 RDI: dffffc000000004b
RBP: 0000000000000258 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90000b0f930 R11: 0000000000002b81 R12: ffffffff8922a161
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880d7055000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc2c2c1371a CR3: 0000000031c58000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __kasan_check_byte+0x13/0x50 mm/kasan/common.c:567
 kasan_check_byte include/linux/kasan.h:399 [inline]
 lock_acquire kernel/locking/lockdep.c:5842 [inline]
 lock_acquire+0xfc/0x350 kernel/locking/lockdep.c:5825
 lock_sock_nested+0x41/0xf0 net/core/sock.c:3711
 lock_sock include/net/sock.h:1669 [inline]
 l2cap_sock_new_connection_cb+0x4c/0x240 net/bluetooth/l2cap_sock.c:1476
 l2cap_connect_cfm+0x4c4/0xf80 net/bluetooth/l2cap_core.c:7287
 hci_connect_cfm include/net/bluetooth/hci_core.h:2103 [inline]
 hci_remote_features_evt+0x4dd/0x970 net/bluetooth/hci_event.c:3728
 hci_event_func net/bluetooth/hci_event.c:7569 [inline]
 hci_event_packet+0xa10/0x11c0 net/bluetooth/hci_event.c:7623
 hci_rx_work+0x2c5/0x16b0 net/bluetooth/hci_core.c:4071
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x56a/0x730 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </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:ffffc90000b0f840 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: 0000000000000258 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8922a161 RDI: dffffc000000004b
RBP: 0000000000000258 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90000b0f930 R11: 0000000000002b81 R12: ffffffff8922a161
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880d7055000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc2c2c1371a CR3: 000000000df82000 CR4: 0000000000352ef0
----------------
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)