Extracting prog: 7m30.08004483s
Minimizing prog: 55m19.296400228s
Simplifying prog options: 0s
Extracting C: 3m32.086756422s
Simplifying C: 19m9.184233539s
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:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_connect-syz_usb_control_io$cdc_ncm-syz_usb_control_io-syz_usb_connect$cdc_ncm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_connect(0x3, 0x0, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f0000000ac0)={0x44, &(0x7f0000000800)={0x0, 0x18, 0x2, "e33b"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_connect$cdc_ncm(0x2, 0x0, 0x0, 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:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_connect-syz_usb_control_io$cdc_ncm-syz_usb_control_io-syz_usb_connect$cdc_ncm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_connect(0x3, 0x0, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f0000000ac0)={0x44, &(0x7f0000000800)={0x0, 0x18, 0x2, "e33b"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_connect$cdc_ncm(0x2, 0x0, 0x0, 0x0)
program did not crash
single: failed to extract reproducer
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:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_connect-syz_usb_control_io$cdc_ncm-syz_usb_control_io-syz_usb_connect$cdc_ncm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_connect(0x3, 0x0, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f0000000ac0)={0x44, &(0x7f0000000800)={0x0, 0x18, 0x2, "e33b"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_connect$cdc_ncm(0x2, 0x0, 0x0, 0x0)
program crashed: INFO: task hung in uevent_show
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_connect-syz_usb_control_io$cdc_ncm-syz_usb_control_io
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_connect(0x3, 0x0, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f0000000ac0)={0x44, &(0x7f0000000800)={0x0, 0x18, 0x2, "e33b"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
syz_usb_control_io(r0, 0x0, 0x0)
program crashed: INFO: task hung in uevent_show
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_connect-syz_usb_control_io$cdc_ncm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_connect(0x3, 0x0, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f0000000ac0)={0x44, &(0x7f0000000800)={0x0, 0x18, 0x2, "e33b"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program crashed: INFO: task hung in uevent_show
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_connect(0x3, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f0000000ac0)={0x44, &(0x7f0000000800)={0x0, 0x18, 0x2, "e33b"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program crashed: INFO: task hung in uevent_show
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_control_io$cdc_ncm
detailed listing:
executing program 0:
syz_usb_control_io$cdc_ncm(0xffffffffffffffff, 0x0, &(0x7f0000000ac0)={0x44, &(0x7f0000000800)={0x0, 0x18, 0x2, "e33b"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f0000000ac0)={0x44, &(0x7f0000000800)={0x0, 0x18, 0x2, "e33b"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0})
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x0, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f0000000ac0)={0x44, &(0x7f0000000800)={0x0, 0x18, 0x2, "e33b"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0) (rerun: 64)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f0000000ac0)={0x44, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, &(0x7f0000000ac0)={0x44, &(0x7f0000000800)={0x0, 0x18}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
program crashed: INFO: task hung in uevent_show
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
program crashed: INFO: task hung in uevent_show
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
program crashed: INFO: task hung in uevent_show
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
program crashed: INFO: task hung in uevent_show
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
program crashed: INFO: task hung in uevent_show
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
program crashed: INFO: task hung in uevent_show
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$cdc_ncm
program crashed: INFO: task hung in uevent_show
reproducing took 1h25m30.647456479s
repro crashed as (corrupted=false):
INFO: task udevd:2963 blocked for more than 143 seconds.
Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:27792 pid:2963 tgid:2963 ppid:2860 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x1042/0x34b0 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
device_lock include/linux/device.h:1014 [inline]
uevent_show+0x188/0x3b0 drivers/base/core.c:2736
dev_attr_show+0x53/0xe0 drivers/base/core.c:2430
sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
seq_read_iter+0x4f4/0x12b0 fs/seq_file.c:230
kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:488 [inline]
vfs_read+0x87f/0xbe0 fs/read_write.c:569
ksys_read+0x12f/0x260 fs/read_write.c:712
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fac73521b6a
RSP: 002b:00007ffc143fab18 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000564057c93890 RCX: 00007fac73521b6a
RDX: 0000000000001000 RSI: 0000564057c6d640 RDI: 0000000000000008
RBP: 0000564057c93890 R08: 0000000000000008 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffc143faff8 R15: 000000000000000a
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
5 locks held by kworker/1:1/41:
#0: ffff88810668c548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900002b7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88810a7d1190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff88810a7d1190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff888100ffd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888100ffd190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#4: ffff888100ff8160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff888100ff8160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
2 locks held by getty/2920:
#0: ffff8881124250a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
4 locks held by udevd/2963:
#0: ffff88811410a540 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
#1: ffff888117107088 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff888114c79968 (kn->active#5){.+.+}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff888100ffd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888100ffd190 (&dev->mutex){....}-{3:3}, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2736
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:111
final repro crashed as (corrupted=false):
INFO: task udevd:2963 blocked for more than 143 seconds.
Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:27792 pid:2963 tgid:2963 ppid:2860 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x1042/0x34b0 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
device_lock include/linux/device.h:1014 [inline]
uevent_show+0x188/0x3b0 drivers/base/core.c:2736
dev_attr_show+0x53/0xe0 drivers/base/core.c:2430
sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
seq_read_iter+0x4f4/0x12b0 fs/seq_file.c:230
kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:488 [inline]
vfs_read+0x87f/0xbe0 fs/read_write.c:569
ksys_read+0x12f/0x260 fs/read_write.c:712
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fac73521b6a
RSP: 002b:00007ffc143fab18 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000564057c93890 RCX: 00007fac73521b6a
RDX: 0000000000001000 RSI: 0000564057c6d640 RDI: 0000000000000008
RBP: 0000564057c93890 R08: 0000000000000008 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffc143faff8 R15: 000000000000000a
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
5 locks held by kworker/1:1/41:
#0: ffff88810668c548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900002b7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88810a7d1190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff88810a7d1190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff888100ffd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888100ffd190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#4: ffff888100ff8160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff888100ff8160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
2 locks held by getty/2920:
#0: ffff8881124250a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
4 locks held by udevd/2963:
#0: ffff88811410a540 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
#1: ffff888117107088 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff888114c79968 (kn->active#5){.+.+}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff888100ffd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888100ffd190 (&dev->mutex){....}-{3:3}, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2736
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:111