Extracting prog: 7m13.263251064s
Minimizing prog: 59m58.471703928s
Simplifying prog options: 0s
Extracting C: 3m38.256718108s
Simplifying C: 19m19.641530463s


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_control_io$printer-syz_usb_control_io$printer-syz_usb_control_io$cdc_ecm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_control_io$printer(r0, 0x0, &(0x7f00000003c0)={0x34, &(0x7f0000000200)={0x20, 0xc}, 0x0, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$printer(r0, 0x0, 0x0)
syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f0000000300)={0x1c, &(0x7f0000000540)={0x0, 0x5, 0xfc, "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"}, 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_control_io$printer-syz_usb_control_io$printer-syz_usb_control_io$cdc_ecm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_control_io$printer(r0, 0x0, &(0x7f00000003c0)={0x34, &(0x7f0000000200)={0x20, 0xc}, 0x0, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$printer(r0, 0x0, 0x0)
syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f0000000300)={0x1c, &(0x7f0000000540)={0x0, 0x5, 0xfc, "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"}, 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_control_io$printer-syz_usb_control_io$printer-syz_usb_control_io$cdc_ecm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_control_io$printer(r0, 0x0, &(0x7f00000003c0)={0x34, &(0x7f0000000200)={0x20, 0xc}, 0x0, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$printer(r0, 0x0, 0x0)
syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f0000000300)={0x1c, &(0x7f0000000540)={0x0, 0x5, 0xfc, "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"}, 0x0, 0x0})

program crashed: INFO: task hung in uevent_show
single: successfully extracted reproducer
found reproducer with 4 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_control_io$printer-syz_usb_control_io$printer
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$printer(r0, 0x0, &(0x7f00000003c0)={0x34, &(0x7f0000000200)={0x20, 0xc}, 0x0, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$printer(r0, 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$printer-syz_usb_control_io$cdc_ecm
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$printer(r0, 0x0, &(0x7f00000003c0)={0x34, &(0x7f0000000200)={0x20, 0xc}, 0x0, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f0000000300)={0x1c, &(0x7f0000000540)={0x0, 0x5, 0xfc, "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"}, 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_control_io$cdc_ecm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x85, 0x4f, 0xbe, 0x10, 0x50d, 0x2102, 0x70d0, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x1d, 0x0, 0x2, 0xff, 0xff, 0xff, 0x0, [], [{{0x9, 0x5, 0xa, 0x2, 0x10, 0x0, 0xfa}}, {{0x9, 0x5, 0x82, 0x2, 0x450}}]}}]}}]}}, 0x0)
syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f0000000300)={0x1c, &(0x7f0000000540)={0x0, 0x5, 0xfc, "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"}, 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_control_io$printer-syz_usb_control_io$cdc_ecm
detailed listing:
executing program 0:
syz_usb_control_io$printer(0xffffffffffffffff, 0x0, &(0x7f00000003c0)={0x34, &(0x7f0000000200)={0x20, 0xc}, 0x0, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$cdc_ecm(0xffffffffffffffff, 0x0, &(0x7f0000000300)={0x1c, &(0x7f0000000540)={0x0, 0x5, 0xfc, "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"}, 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$printer-syz_usb_control_io$cdc_ecm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x0, 0x0, 0x0)
syz_usb_control_io$printer(r0, 0x0, &(0x7f00000003c0)={0x34, &(0x7f0000000200)={0x20, 0xc}, 0x0, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f0000000300)={0x1c, &(0x7f0000000540)={0x0, 0x5, 0xfc, "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"}, 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$printer-syz_usb_control_io$cdc_ecm
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$printer(r0, 0x0, 0x0)
syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f0000000300)={0x1c, &(0x7f0000000540)={0x0, 0x5, 0xfc, "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"}, 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$printer-syz_usb_control_io$cdc_ecm
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$printer(r0, 0x0, &(0x7f00000003c0)={0x34, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f0000000300)={0x1c, &(0x7f0000000540)={0x0, 0x5, 0xfc, "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"}, 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$printer-syz_usb_control_io$cdc_ecm
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$printer(r0, 0x0, &(0x7f00000003c0)={0x34, &(0x7f0000000200)={0x20, 0xc}, 0x0, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$cdc_ecm(r0, 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$printer-syz_usb_control_io$cdc_ecm
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$printer(r0, 0x0, &(0x7f00000003c0)={0x34, &(0x7f0000000200)={0x20, 0xc}, 0x0, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f0000000300)={0x1c, 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$printer-syz_usb_control_io$cdc_ecm
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$printer(r0, 0x0, &(0x7f00000003c0)={0x34, &(0x7f0000000200)={0x20, 0xc}, 0x0, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f0000000300)={0x1c, &(0x7f0000000540)={0x0, 0x5}, 0x0, 0x0})

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$printer-syz_usb_control_io$cdc_ecm
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$printer-syz_usb_control_io$cdc_ecm
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$printer-syz_usb_control_io$cdc_ecm
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$printer-syz_usb_control_io$cdc_ecm
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$printer-syz_usb_control_io$cdc_ecm
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$printer-syz_usb_control_io$cdc_ecm
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$printer-syz_usb_control_io$cdc_ecm
program crashed: INFO: task hung in uevent_show
reproducing took 1h30m9.633218744s
repro crashed as (corrupted=false):
INFO: task udevd:2965 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:28176 pid:2965  tgid:2965  ppid:2862   flags:0x00004002
Call Trace:
 <TASK>
 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: 0033:0x7f8401c61b6a
RSP: 002b:00007ffc8becf158 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055cb0b7b56f0 RCX: 00007f8401c61b6a
RDX: 0000000000001000 RSI: 000055cb0b7c1640 RDI: 0000000000000008
RBP: 000055cb0b7b56f0 R08: 0000000000000008 R09: 0000000000000020
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffc8becf638 R15: 000000000000000a
 </TASK>

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
7 locks held by kworker/1:2/1116:
 #0: ffff8881066c4148 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc90001e0fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: ffff88810a7db190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #2: ffff88810a7db190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
 #3: ffff8881120e0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #3: ffff8881120e0190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #4: ffff888105ab5160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #4: ffff888105ab5160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #5: ffff8881f593d6d8 (&rq->__lock){-.-.}-{2:2}, at: __timer_delete_sync+0x14c/0x1b0 kernel/time/timer.c:1649
 #6: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #6: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #6: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: __update_idle_core+0x58/0x5d0 kernel/sched/fair.c:7607
2 locks held by getty/2920:
 #0: ffff88811205c0a0 (&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/2965:
 #0: ffff888115af31c8 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: ffff888117757488 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff888114ea1e18 (kn->active#5){.+.+}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff8881120e0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #3: ffff8881120e0190 (&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 09/13/2024
Call Trace:
 <TASK>
 __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
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 1116 Comm: kworker/1:2 Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:qlist_free_all+0x28/0x120 mm/kasan/quarantine.c:177
Code: 90 90 41 57 41 56 41 55 41 54 55 53 48 8b 2f 48 85 ed 0f 84 c9 00 00 00 49 89 fe 49 89 f5 eb 38 48 63 83 c0 00 00 00 48 89 df <4c> 8b 65 00 48 29 c5 48 89 ee e8 39 ee ff ff 49 89 c7 66 90 48 89
RSP: 0018:ffffc90001e0eaf0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888100add280 RCX: ffffea0000000000
RDX: 0000000000000000 RSI: ffffffff8116ae96 RDI: ffff888100add280
RBP: ffff88811072b608 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88811072b608
R13: 0000000000000000 R14: ffffc90001e0eb28 R15: ffff888109b51f38
FS:  0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe9638bcc8 CR3: 0000000116200000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x4e/0x70 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:247 [inline]
 slab_post_alloc_hook mm/slub.c:4085 [inline]
 slab_alloc_node mm/slub.c:4134 [inline]
 __kmalloc_cache_noprof+0x119/0x2c0 mm/slub.c:4290
 kmalloc_noprof include/linux/slab.h:878 [inline]
 usb_control_msg+0xbd/0x4b0 drivers/usb/core/message.c:144
 _usbctrl_vendorreq_sync+0xc6/0x1f0 drivers/net/wireless/realtek/rtlwifi/usb.c:42
 _usb_read_sync+0x11d/0x190 drivers/net/wireless/realtek/rtlwifi/usb.c:75
 rtl_read_dword drivers/net/wireless/realtek/rtlwifi/wifi.h:2911 [inline]
 read_efuse_byte+0x612/0x910 drivers/net/wireless/realtek/rtlwifi/efuse.c:182
 read_efuse+0xa40/0xd60 drivers/net/wireless/realtek/rtlwifi/efuse.c:295
 efuse_read_all_map drivers/net/wireless/realtek/rtlwifi/efuse.c:648 [inline]
 rtl_efuse_shadow_map_update+0x1f8/0x2c0 drivers/net/wireless/realtek/rtlwifi/efuse.c:494
 rtl_get_hwinfo+0xdb/0x880 drivers/net/wireless/realtek/rtlwifi/efuse.c:1224
 _rtl92cu_read_adapter_info drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c:334 [inline]
 rtl92cu_read_eeprom_info+0x2bc/0x2730 drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c:411
 rtl_usb_probe+0x915/0x24d0 drivers/net/wireless/realtek/rtlwifi/usb.c:1011
 usb_probe_interface+0x300/0x9c0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:459
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:534
 device_add+0x114b/0x1a70 drivers/base/core.c:3672
 usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254
 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:459
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:534
 device_add+0x114b/0x1a70 drivers/base/core.c:3672
 usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
 hub_port_connect drivers/usb/core/hub.c:5521 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x2e58/0x4f40 drivers/usb/core/hub.c:5903
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 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
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.791 msecs

final repro crashed as (corrupted=false):
INFO: task udevd:2965 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:28176 pid:2965  tgid:2965  ppid:2862   flags:0x00004002
Call Trace:
 <TASK>
 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: 0033:0x7f8401c61b6a
RSP: 002b:00007ffc8becf158 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055cb0b7b56f0 RCX: 00007f8401c61b6a
RDX: 0000000000001000 RSI: 000055cb0b7c1640 RDI: 0000000000000008
RBP: 000055cb0b7b56f0 R08: 0000000000000008 R09: 0000000000000020
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffc8becf638 R15: 000000000000000a
 </TASK>

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
7 locks held by kworker/1:2/1116:
 #0: ffff8881066c4148 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc90001e0fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: ffff88810a7db190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #2: ffff88810a7db190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
 #3: ffff8881120e0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #3: ffff8881120e0190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #4: ffff888105ab5160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #4: ffff888105ab5160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #5: ffff8881f593d6d8 (&rq->__lock){-.-.}-{2:2}, at: __timer_delete_sync+0x14c/0x1b0 kernel/time/timer.c:1649
 #6: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #6: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #6: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: __update_idle_core+0x58/0x5d0 kernel/sched/fair.c:7607
2 locks held by getty/2920:
 #0: ffff88811205c0a0 (&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/2965:
 #0: ffff888115af31c8 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: ffff888117757488 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff888114ea1e18 (kn->active#5){.+.+}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff8881120e0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #3: ffff8881120e0190 (&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 09/13/2024
Call Trace:
 <TASK>
 __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
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 1116 Comm: kworker/1:2 Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:qlist_free_all+0x28/0x120 mm/kasan/quarantine.c:177
Code: 90 90 41 57 41 56 41 55 41 54 55 53 48 8b 2f 48 85 ed 0f 84 c9 00 00 00 49 89 fe 49 89 f5 eb 38 48 63 83 c0 00 00 00 48 89 df <4c> 8b 65 00 48 29 c5 48 89 ee e8 39 ee ff ff 49 89 c7 66 90 48 89
RSP: 0018:ffffc90001e0eaf0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888100add280 RCX: ffffea0000000000
RDX: 0000000000000000 RSI: ffffffff8116ae96 RDI: ffff888100add280
RBP: ffff88811072b608 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88811072b608
R13: 0000000000000000 R14: ffffc90001e0eb28 R15: ffff888109b51f38
FS:  0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe9638bcc8 CR3: 0000000116200000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x4e/0x70 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:247 [inline]
 slab_post_alloc_hook mm/slub.c:4085 [inline]
 slab_alloc_node mm/slub.c:4134 [inline]
 __kmalloc_cache_noprof+0x119/0x2c0 mm/slub.c:4290
 kmalloc_noprof include/linux/slab.h:878 [inline]
 usb_control_msg+0xbd/0x4b0 drivers/usb/core/message.c:144
 _usbctrl_vendorreq_sync+0xc6/0x1f0 drivers/net/wireless/realtek/rtlwifi/usb.c:42
 _usb_read_sync+0x11d/0x190 drivers/net/wireless/realtek/rtlwifi/usb.c:75
 rtl_read_dword drivers/net/wireless/realtek/rtlwifi/wifi.h:2911 [inline]
 read_efuse_byte+0x612/0x910 drivers/net/wireless/realtek/rtlwifi/efuse.c:182
 read_efuse+0xa40/0xd60 drivers/net/wireless/realtek/rtlwifi/efuse.c:295
 efuse_read_all_map drivers/net/wireless/realtek/rtlwifi/efuse.c:648 [inline]
 rtl_efuse_shadow_map_update+0x1f8/0x2c0 drivers/net/wireless/realtek/rtlwifi/efuse.c:494
 rtl_get_hwinfo+0xdb/0x880 drivers/net/wireless/realtek/rtlwifi/efuse.c:1224
 _rtl92cu_read_adapter_info drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c:334 [inline]
 rtl92cu_read_eeprom_info+0x2bc/0x2730 drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c:411
 rtl_usb_probe+0x915/0x24d0 drivers/net/wireless/realtek/rtlwifi/usb.c:1011
 usb_probe_interface+0x300/0x9c0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:459
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:534
 device_add+0x114b/0x1a70 drivers/base/core.c:3672
 usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254
 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:459
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:534
 device_add+0x114b/0x1a70 drivers/base/core.c:3672
 usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
 hub_port_connect drivers/usb/core/hub.c:5521 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x2e58/0x4f40 drivers/usb/core/hub.c:5903
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 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
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.791 msecs