Extracting prog: 10m30.033575077s
Minimizing prog: 1h20m3.313816244s
Simplifying prog options: 18m24.166646286s
Extracting C: 5m12.476152324s
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: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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program crashed: INFO: task hung in hci_cmd_sync_clear
program crashed: INFO: task hung in hci_cmd_sync_clear
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)

program did not crash
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program did not crash
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
bind$bt_hci(0xffffffffffffffff, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(0xffffffffffffffff, &(0x7f0000000000), 0xd)

program did not crash
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program did not crash
testing program (duration=7m10.874549091s, {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}}): pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program did not crash
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, 0x0, 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program did not crash
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program did not crash
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, 0x0, 0x0, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program did not crash
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000), 0x0, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program did not crash
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, 0x0, 0x0)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program did not crash
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program crashed: INFO: task hung in hci_cmd_sync_clear
extracting C reproducer
testing compiled C program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program crashed: INFO: task hung in hci_cmd_sync_clear
extracting C reproducer
testing compiled C program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program crashed: INFO: task hung in hci_cmd_sync_clear
validation run: crashed=true
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

program crashed: INFO: task hung in hci_cmd_sync_clear
validation run: crashed=true
testing program (duration=7m10.874549091s, {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}}): bpf$MAP_CREATE-pwrite64-syz_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1400000007"], 0x50)
pwrite64(0xffffffffffffffff, &(0x7f0000000000)='2', 0x1, 0x4fed0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6)
write$binfmt_misc(r0, &(0x7f0000000000), 0xd)

VM was preempted during syz execution: failed to run command in VM: instance is preempted, retrying
program crashed: INFO: task hung in hci_cmd_sync_clear
validation run: crashed=true
reproducing took 2h7m38.734123955s
repro crashed as (corrupted=false):
INFO: task syz-executor:5749 blocked for more than 143 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:23152 pid:5749  tgid:5749  ppid:1      task_flags:0x40054c flags:0x00080003
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x125c/0x6730 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0xdd/0x2c0 kernel/sched/core.c:7326
 schedule_timeout+0x1b2/0x280 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common+0x2e7/0x4c0 kernel/sched/completion.c:121
 __flush_work+0x7c7/0xcb0 kernel/workqueue.c:4374
 __cancel_work_sync kernel/workqueue.c:4494 [inline]
 cancel_work_sync+0xd1/0xf0 kernel/workqueue.c:4531
 hci_cmd_sync_clear+0x33/0x100 net/bluetooth/hci_sync.c:655
 hci_unregister_dev+0x1e4/0x690 net/bluetooth/hci_core.c:2674
 vhci_release+0x17d/0x230 drivers/bluetooth/hci_vhci.c:700
 __fput+0x3ff/0xb50 fs/file_table.c:512
 task_work_run+0x150/0x240 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x951/0x2ae0 kernel/exit.c:1009
 do_group_exit+0xd5/0x2a0 kernel/exit.c:1152
 get_signal+0x1ec7/0x21e0 kernel/signal.c:3046
 arch_do_signal_or_restart+0x91/0x7e0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x139/0x6f0 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x666/0x870 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbb7b75e90e
RSP: 002b:00007ffcc456ffd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: fffffffffffffe00 RBX: 0000555591e5c500 RCX: 00007fbb7b75e90e
RDX: 0000000000000030 RSI: 00007ffcc45700d0 RDI: 00000000000000f9
RBP: 00007ffcc457007c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000258
R13: 00000000000927c0 R14: 0000000000025448 R15: 00007ffcc45700d0
 </TASK>

Showing all locks held in the system:
2 locks held by ksoftirqd/1/23:
 #0: ffff8880b853b520 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x140 kernel/sched/core.c:667
 #1: ffff8880b8524568 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:218 [inline]
 #1: ffff8880b8524568 (psi_seq){-.-.}-{0:0}, at: __schedule+0x2e8e/0x6730 kernel/sched/core.c:7228
1 lock held by khungtaskd/30:
 #0: ffffffff8ede8200 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8ede8200 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #0: ffffffff8ede8200 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3d/0x184 kernel/locking/lockdep.c:6775
2 locks held by getty/5353:
 #0: ffff8880344080a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x419/0x14e0 drivers/tty/n_tty.c:2211
3 locks held by kworker/u9:2/5717:
 #0: ffff88803351f940 ((wq_completion)hci0){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc900035a7d08 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
 #2: ffff888079ea8ea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x18a/0x470 net/bluetooth/hci_sync.c:331
3 locks held by kworker/0:4/7093:
 #0: ffff88801c04b140 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc90002f8fd08 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
 #2: ffff88805b0d6250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1b8/0x6310 drivers/net/netdevsim/fib.c:1490

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 nmi_cpu_backtrace.cold+0x12d/0x151 lib/nmi_backtrace.c:122
 nmi_trigger_cpumask_backtrace+0x21c/0x2a0 lib/nmi_backtrace.c:65
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x141/0x190 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xcb1/0x1030 kernel/hung_task.c:561
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 14075 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:rb_red_parent lib/rbtree.c:66 [inline]
RIP: 0010:__rb_insert lib/rbtree.c:88 [inline]
RIP: 0010:rb_insert_color+0x10/0x810 lib/rbtree.c:436
Code: 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 41 57 <48> 89 fa 41 56 48 c1 ea 03 41 55 41 54 49 89 fc 55 53 48 83 ec 08
RSP: 0018:ffffc9000614f5d0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff88802cc089d0 RCX: ffffffff8267edf7
RDX: 1ffff1100545a32e RSI: ffff88801c05d848 RDI: ffff88802cc089d0
RBP: ffff88802cc089e8 R08: ffffc90005a69000 R09: ffffc90005fcd000
R10: ffffc90005a69000 R11: 0000000000000000 R12: ffff88802a2d1968
R13: ffffc90005fcf000 R14: ffff88802cc089c0 R15: 0000000000000000
FS:  0000555569ffb500(0000) GS:ffff888123bde000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f19137ed158 CR3: 000000007eb23000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __link_va mm/vmalloc.c:1295 [inline]
 link_va mm/vmalloc.c:1307 [inline]
 insert_vmap_area+0x291/0x4b0 mm/vmalloc.c:1424
 alloc_vmap_area+0x8a3/0x2bb0 mm/vmalloc.c:2138
 __get_vm_area_node+0x1ca/0x330 mm/vmalloc.c:3248
 __vmalloc_node_range_noprof+0x228/0x1630 mm/vmalloc.c:4064
 __vmalloc_node_noprof+0xad/0xf0 mm/vmalloc.c:4165
 alloc_counters net/ipv6/netfilter/ip6_tables.c:815 [inline]
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:837 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1037 [inline]
 do_ip6t_get_ctl+0x7e0/0xc30 net/ipv6/netfilter/ip6_tables.c:1678
 nf_getsockopt+0x7c/0xe0 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x207/0x2a0 net/ipv6/ipv6_sockglue.c:1464
 tcp_getsockopt+0xa1/0x110 net/ipv4/tcp.c:4864
 do_sock_getsockopt+0x50a/0x6e0 net/socket.c:2474
 __sys_getsockopt+0x148/0x260 net/socket.c:2505
 __do_sys_getsockopt net/socket.c:2512 [inline]
 __se_sys_getsockopt net/socket.c:2509 [inline]
 __x64_sys_getsockopt+0xbd/0x160 net/socket.c:2509
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f191359f8aa
Code: 48 83 ec 10 89 d2 48 63 ff 45 31 c9 6a 2a 45 31 c0 31 c9 e8 d8 99 fb ff 48 83 c4 18 c3 0f 1f 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff f7
RSP: 002b:00007ffd7e62ce28 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007ffd7e62ceb0 RCX: 00007f191359f8aa
RDX: 0000000000000041 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00007ffd7e62ce4c R09: 0000000000000000
R10: 00007ffd7e62ceb0 R11: 0000000000000212 R12: 00007f19137ef240
R13: 00007ffd7e62ce4c R14: 0000000000000000 R15: 00007f19137effc0
 </TASK>

final repro crashed as (corrupted=false):
INFO: task syz-executor:5749 blocked for more than 143 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:23152 pid:5749  tgid:5749  ppid:1      task_flags:0x40054c flags:0x00080003
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x125c/0x6730 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0xdd/0x2c0 kernel/sched/core.c:7326
 schedule_timeout+0x1b2/0x280 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common+0x2e7/0x4c0 kernel/sched/completion.c:121
 __flush_work+0x7c7/0xcb0 kernel/workqueue.c:4374
 __cancel_work_sync kernel/workqueue.c:4494 [inline]
 cancel_work_sync+0xd1/0xf0 kernel/workqueue.c:4531
 hci_cmd_sync_clear+0x33/0x100 net/bluetooth/hci_sync.c:655
 hci_unregister_dev+0x1e4/0x690 net/bluetooth/hci_core.c:2674
 vhci_release+0x17d/0x230 drivers/bluetooth/hci_vhci.c:700
 __fput+0x3ff/0xb50 fs/file_table.c:512
 task_work_run+0x150/0x240 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x951/0x2ae0 kernel/exit.c:1009
 do_group_exit+0xd5/0x2a0 kernel/exit.c:1152
 get_signal+0x1ec7/0x21e0 kernel/signal.c:3046
 arch_do_signal_or_restart+0x91/0x7e0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x139/0x6f0 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x666/0x870 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbb7b75e90e
RSP: 002b:00007ffcc456ffd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: fffffffffffffe00 RBX: 0000555591e5c500 RCX: 00007fbb7b75e90e
RDX: 0000000000000030 RSI: 00007ffcc45700d0 RDI: 00000000000000f9
RBP: 00007ffcc457007c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000258
R13: 00000000000927c0 R14: 0000000000025448 R15: 00007ffcc45700d0
 </TASK>

Showing all locks held in the system:
2 locks held by ksoftirqd/1/23:
 #0: ffff8880b853b520 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x140 kernel/sched/core.c:667
 #1: ffff8880b8524568 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:218 [inline]
 #1: ffff8880b8524568 (psi_seq){-.-.}-{0:0}, at: __schedule+0x2e8e/0x6730 kernel/sched/core.c:7228
1 lock held by khungtaskd/30:
 #0: ffffffff8ede8200 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8ede8200 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #0: ffffffff8ede8200 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3d/0x184 kernel/locking/lockdep.c:6775
2 locks held by getty/5353:
 #0: ffff8880344080a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x419/0x14e0 drivers/tty/n_tty.c:2211
3 locks held by kworker/u9:2/5717:
 #0: ffff88803351f940 ((wq_completion)hci0){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc900035a7d08 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
 #2: ffff888079ea8ea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x18a/0x470 net/bluetooth/hci_sync.c:331
3 locks held by kworker/0:4/7093:
 #0: ffff88801c04b140 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
 #1: ffffc90002f8fd08 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
 #2: ffff88805b0d6250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1b8/0x6310 drivers/net/netdevsim/fib.c:1490

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 nmi_cpu_backtrace.cold+0x12d/0x151 lib/nmi_backtrace.c:122
 nmi_trigger_cpumask_backtrace+0x21c/0x2a0 lib/nmi_backtrace.c:65
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x141/0x190 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xcb1/0x1030 kernel/hung_task.c:561
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 14075 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:rb_red_parent lib/rbtree.c:66 [inline]
RIP: 0010:__rb_insert lib/rbtree.c:88 [inline]
RIP: 0010:rb_insert_color+0x10/0x810 lib/rbtree.c:436
Code: 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 41 57 <48> 89 fa 41 56 48 c1 ea 03 41 55 41 54 49 89 fc 55 53 48 83 ec 08
RSP: 0018:ffffc9000614f5d0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff88802cc089d0 RCX: ffffffff8267edf7
RDX: 1ffff1100545a32e RSI: ffff88801c05d848 RDI: ffff88802cc089d0
RBP: ffff88802cc089e8 R08: ffffc90005a69000 R09: ffffc90005fcd000
R10: ffffc90005a69000 R11: 0000000000000000 R12: ffff88802a2d1968
R13: ffffc90005fcf000 R14: ffff88802cc089c0 R15: 0000000000000000
FS:  0000555569ffb500(0000) GS:ffff888123bde000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f19137ed158 CR3: 000000007eb23000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __link_va mm/vmalloc.c:1295 [inline]
 link_va mm/vmalloc.c:1307 [inline]
 insert_vmap_area+0x291/0x4b0 mm/vmalloc.c:1424
 alloc_vmap_area+0x8a3/0x2bb0 mm/vmalloc.c:2138
 __get_vm_area_node+0x1ca/0x330 mm/vmalloc.c:3248
 __vmalloc_node_range_noprof+0x228/0x1630 mm/vmalloc.c:4064
 __vmalloc_node_noprof+0xad/0xf0 mm/vmalloc.c:4165
 alloc_counters net/ipv6/netfilter/ip6_tables.c:815 [inline]
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:837 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1037 [inline]
 do_ip6t_get_ctl+0x7e0/0xc30 net/ipv6/netfilter/ip6_tables.c:1678
 nf_getsockopt+0x7c/0xe0 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x207/0x2a0 net/ipv6/ipv6_sockglue.c:1464
 tcp_getsockopt+0xa1/0x110 net/ipv4/tcp.c:4864
 do_sock_getsockopt+0x50a/0x6e0 net/socket.c:2474
 __sys_getsockopt+0x148/0x260 net/socket.c:2505
 __do_sys_getsockopt net/socket.c:2512 [inline]
 __se_sys_getsockopt net/socket.c:2509 [inline]
 __x64_sys_getsockopt+0xbd/0x160 net/socket.c:2509
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f191359f8aa
Code: 48 83 ec 10 89 d2 48 63 ff 45 31 c9 6a 2a 45 31 c0 31 c9 e8 d8 99 fb ff 48 83 c4 18 c3 0f 1f 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff f7
RSP: 002b:00007ffd7e62ce28 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007ffd7e62ceb0 RCX: 00007f191359f8aa
RDX: 0000000000000041 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00007ffd7e62ce4c R09: 0000000000000000
R10: 00007ffd7e62ceb0 R11: 0000000000000212 R12: 00007f19137ef240
R13: 00007ffd7e62ce4c R14: 0000000000000000 R15: 00007f19137effc0
 </TASK>