Extracting prog: 6m38.214248003s
Minimizing prog: 1h42m20.658247684s
Simplifying prog options: 15m7.046544381s
Extracting C: 6m6.331587031s
Simplifying C: 0s
extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
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:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program crashed: possible deadlock in n_tty_receive_buf_common
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
syz_open_dev$tty1(0xc, 0x4, 0x1)
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
ioctl$KDSKBENT(0xffffffffffffffff, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
syz_usb_control_io$hid(0xffffffffffffffff, 0x0, 0x0)
syz_usb_control_io$hid(0xffffffffffffffff, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(0xffffffffffffffff, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r0 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r0, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, 0x0, 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, 0x0, 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0x0, 0x0)
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0x0, &(0x7f00000002c0))
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m55.625903368s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program did not crash
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program crashed: possible deadlock in n_tty_flush_buffer
validation run: crashed=true
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program crashed: possible deadlock in tty_buffer_flush
validation run: crashed=true
testing program (duration=6m55.625903368s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_usb_ep_write-syz_open_dev$tty1-ioctl$KDSKBENT
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000000000040260933334000000000010902240001000000000904000001030100000921000000012201000905810308"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000040)={0x24, &(0x7f00000001c0)=ANY=[@ANYBLOB="00086e0000006e0f252d0ae5f0c23ca7100b"], 0x0, 0x0, 0x0}, 0x0)
syz_usb_ep_write(r0, 0x81, 0xffffff75, &(0x7f00000002c0)="b9425b44651dd23241963599000000110000004a16941ff5f4b4f1f0add7fcf2b877fceafffffffffff1ffdf4cd9f5d3969890522c77157d88010000003a5bd5531d459dffff03000000000091ff000000e8f5b3371da3635b8b4fa637135800001f65e4b436aa9e50bc0f19b7d3372ff9ebcede1fb5e9428f54d5d1f0cc752cf246a5d2da34a5aa97dc14a469c3dd3e26b41c356484e46fd66e3f2c7807e8773eed7b94fa099ab84feadec2ea95f65bba452eae5b0900f98a979a88c517a2dc360a00237723e2f467af706ea17226296b3a10a351cb47aba2c6b836c90679b4dd859ddc9e4800448aab0000000000000d75f34bb50d8d7084")
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$KDSKBENT(r1, 0x4b47, &(0x7f0000000080)={0x0, 0x7f, 0x20f})
program crashed: possible deadlock in tty_buffer_flush
validation run: crashed=true
reproducing took 2h24m28.316062977s
repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
kworker/0:2/54 is trying to acquire lock:
ffff88801a4c90b8 (&buf->lock){+.+.}-{4:4}, at: tty_buffer_flush+0x74/0x2b0 drivers/tty/tty_buffer.c:229
but task is already holding lock:
ffffffff8e12e380 (console_lock){+.+.}-{0:0}, at: vc_SAK+0x28/0x220 drivers/tty/vt/vt_ioctl.c:999
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (console_lock){+.+.}-{0:0}:
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
console_lock+0x164/0x1b0 kernel/printk/printk.c:2849
con_flush_chars+0x70/0x280 drivers/tty/vt/vt.c:3585
__receive_buf drivers/tty/n_tty.c:1628 [inline]
n_tty_receive_buf_common+0xc8b/0x12f0 drivers/tty/n_tty.c:1723
tty_port_default_receive_buf+0x6e/0xa0 drivers/tty/tty_port.c:37
receive_buf drivers/tty/tty_buffer.c:445 [inline]
flush_to_ldisc+0x24a/0x6e0 drivers/tty/tty_buffer.c:495
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:463
ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
-> #1 (&tty->termios_rwsem){++++}-{4:4}:
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
down_read+0x46/0x2e0 kernel/locking/rwsem.c:1537
n_tty_receive_buf_common+0x84/0x12f0 drivers/tty/n_tty.c:1686
tty_port_default_receive_buf+0x6e/0xa0 drivers/tty/tty_port.c:37
receive_buf drivers/tty/tty_buffer.c:445 [inline]
flush_to_ldisc+0x24a/0x6e0 drivers/tty/tty_buffer.c:495
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:463
ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
-> #0 (&buf->lock){+.+.}-{4:4}:
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908
__lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
__mutex_lock_common kernel/locking/mutex.c:598 [inline]
__mutex_lock+0x187/0x1350 kernel/locking/mutex.c:760
tty_buffer_flush+0x74/0x2b0 drivers/tty/tty_buffer.c:229
__do_SAK+0xf2/0x6e0 drivers/tty/tty_io.c:3025
vc_SAK+0x78/0x220 drivers/tty/vt/vt_ioctl.c:1009
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:463
ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
other info that might help us debug this:
Chain exists of:
&buf->lock --> &tty->termios_rwsem --> console_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(console_lock);
lock(&tty->termios_rwsem);
lock(console_lock);
lock(&buf->lock);
*** DEADLOCK ***
3 locks held by kworker/0:2/54:
#0: ffff88801a474d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801a474d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3319
#1: ffffc9000101fbc0 ((work_completion)(&vc_cons[currcons].SAK_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc9000101fbc0 ((work_completion)(&vc_cons[currcons].SAK_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3319
#2: ffffffff8e12e380 (console_lock){+.+.}-{0:0}, at: vc_SAK+0x28/0x220 drivers/tty/vt/vt_ioctl.c:999
stack backtrace:
CPU: 0 UID: 0 PID: 54 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events vc_SAK
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2043
check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2175
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908
__lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
__mutex_lock_common kernel/locking/mutex.c:598 [inline]
__mutex_lock+0x187/0x1350 kernel/locking/mutex.c:760
tty_buffer_flush+0x74/0x2b0 drivers/tty/tty_buffer.c:229
__do_SAK+0xf2/0x6e0 drivers/tty/tty_io.c:3025
vc_SAK+0x78/0x220 drivers/tty/vt/vt_ioctl.c:1009
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:463
ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
usb 5-1: USB disconnect, device number 27
usb 5-1: new high-speed USB device number 28 using dummy_hcd
usb 5-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 5-1: New USB device found, idVendor=0926, idProduct=3333, bcdDevice= 0.40
usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 5-1: config 0 descriptor??
keytouch 0003:0926:3333.009A: fixing up Keytouch IEC report descriptor
input: HID 0926:3333 as /devices/platform/dummy_hcd.0/usb5/5-1/5-1:0.0/0003:0926:3333.009A/input/input157
keytouch 0003:0926:3333.009A: input,hidraw1: USB HID v0.00 Keyboard [HID 0926:3333] on usb-dummy_hcd.0-1/input0
usb 5-1: USB disconnect, device number 28
usb 5-1: USB disconnect, device number 30
usb 5-1: new high-speed USB device number 31 using dummy_hcd
usb 5-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 5-1: New USB device found, idVendor=0926, idProduct=3333, bcdDevice= 0.40
usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 5-1: config 0 descriptor??
keytouch 0003:0926:3333.009D: fixing up Keytouch IEC report descriptor
input: HID 0926:3333 as /devices/platform/dummy_hcd.0/usb5/5-1/5-1:0.0/0003:0926:3333.009D/input/input160
keytouch 0003:0926:3333.009D: input,hidraw1: USB HID v0.00 Keyboard [HID 0926:3333] on usb-dummy_hcd.0-1/input0
final repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
kworker/0:2/54 is trying to acquire lock:
ffff88801a4c90b8 (&buf->lock){+.+.}-{4:4}, at: tty_buffer_flush+0x74/0x2b0 drivers/tty/tty_buffer.c:229
but task is already holding lock:
ffffffff8e12e380 (console_lock){+.+.}-{0:0}, at: vc_SAK+0x28/0x220 drivers/tty/vt/vt_ioctl.c:999
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (console_lock){+.+.}-{0:0}:
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
console_lock+0x164/0x1b0 kernel/printk/printk.c:2849
con_flush_chars+0x70/0x280 drivers/tty/vt/vt.c:3585
__receive_buf drivers/tty/n_tty.c:1628 [inline]
n_tty_receive_buf_common+0xc8b/0x12f0 drivers/tty/n_tty.c:1723
tty_port_default_receive_buf+0x6e/0xa0 drivers/tty/tty_port.c:37
receive_buf drivers/tty/tty_buffer.c:445 [inline]
flush_to_ldisc+0x24a/0x6e0 drivers/tty/tty_buffer.c:495
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:463
ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
-> #1 (&tty->termios_rwsem){++++}-{4:4}:
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
down_read+0x46/0x2e0 kernel/locking/rwsem.c:1537
n_tty_receive_buf_common+0x84/0x12f0 drivers/tty/n_tty.c:1686
tty_port_default_receive_buf+0x6e/0xa0 drivers/tty/tty_port.c:37
receive_buf drivers/tty/tty_buffer.c:445 [inline]
flush_to_ldisc+0x24a/0x6e0 drivers/tty/tty_buffer.c:495
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:463
ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
-> #0 (&buf->lock){+.+.}-{4:4}:
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908
__lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
__mutex_lock_common kernel/locking/mutex.c:598 [inline]
__mutex_lock+0x187/0x1350 kernel/locking/mutex.c:760
tty_buffer_flush+0x74/0x2b0 drivers/tty/tty_buffer.c:229
__do_SAK+0xf2/0x6e0 drivers/tty/tty_io.c:3025
vc_SAK+0x78/0x220 drivers/tty/vt/vt_ioctl.c:1009
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:463
ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
other info that might help us debug this:
Chain exists of:
&buf->lock --> &tty->termios_rwsem --> console_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(console_lock);
lock(&tty->termios_rwsem);
lock(console_lock);
lock(&buf->lock);
*** DEADLOCK ***
3 locks held by kworker/0:2/54:
#0: ffff88801a474d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801a474d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3319
#1: ffffc9000101fbc0 ((work_completion)(&vc_cons[currcons].SAK_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc9000101fbc0 ((work_completion)(&vc_cons[currcons].SAK_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3319
#2: ffffffff8e12e380 (console_lock){+.+.}-{0:0}, at: vc_SAK+0x28/0x220 drivers/tty/vt/vt_ioctl.c:999
stack backtrace:
CPU: 0 UID: 0 PID: 54 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events vc_SAK
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2043
check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2175
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908
__lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
__mutex_lock_common kernel/locking/mutex.c:598 [inline]
__mutex_lock+0x187/0x1350 kernel/locking/mutex.c:760
tty_buffer_flush+0x74/0x2b0 drivers/tty/tty_buffer.c:229
__do_SAK+0xf2/0x6e0 drivers/tty/tty_io.c:3025
vc_SAK+0x78/0x220 drivers/tty/vt/vt_ioctl.c:1009
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:463
ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
usb 5-1: USB disconnect, device number 27
usb 5-1: new high-speed USB device number 28 using dummy_hcd
usb 5-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 5-1: New USB device found, idVendor=0926, idProduct=3333, bcdDevice= 0.40
usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 5-1: config 0 descriptor??
keytouch 0003:0926:3333.009A: fixing up Keytouch IEC report descriptor
input: HID 0926:3333 as /devices/platform/dummy_hcd.0/usb5/5-1/5-1:0.0/0003:0926:3333.009A/input/input157
keytouch 0003:0926:3333.009A: input,hidraw1: USB HID v0.00 Keyboard [HID 0926:3333] on usb-dummy_hcd.0-1/input0
usb 5-1: USB disconnect, device number 28
usb 5-1: USB disconnect, device number 30
usb 5-1: new high-speed USB device number 31 using dummy_hcd
usb 5-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 5-1: New USB device found, idVendor=0926, idProduct=3333, bcdDevice= 0.40
usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 5-1: config 0 descriptor??
keytouch 0003:0926:3333.009D: fixing up Keytouch IEC report descriptor
input: HID 0926:3333 as /devices/platform/dummy_hcd.0/usb5/5-1/5-1:0.0/0003:0926:3333.009D/input/input160
keytouch 0003:0926:3333.009D: input,hidraw1: USB HID v0.00 Keyboard [HID 0926:3333] on usb-dummy_hcd.0-1/input0