Extracting prog: 7m6.084568288s
Minimizing prog: 38m21.45422599s
Simplifying prog options: 11m13.318390652s
Extracting C: 6m13.211451674s
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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE-openat$vcs
detailed listing:
executing program 0:
r0 = openat$uhid(0xffffffffffffff9c, &(0x7f00000001c0), 0x2, 0x0)
write$UHID_CREATE(r0, &(0x7f0000000200)={0x0, {'syz0\x00', 'syz0\x00', 'syz0\x00', &(0x7f0000000c40)=""/4096, 0x1000, 0xfc2c, 0x6, 0x0, 0xc9d, 0x8}}, 0x120)
openat$vcs(0xffffffffffffff9c, 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: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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE-openat$vcs
detailed listing:
executing program 0:
r0 = openat$uhid(0xffffffffffffff9c, &(0x7f00000001c0), 0x2, 0x0)
write$UHID_CREATE(r0, &(0x7f0000000200)={0x0, {'syz0\x00', 'syz0\x00', 'syz0\x00', &(0x7f0000000c40)=""/4096, 0x1000, 0xfc2c, 0x6, 0x0, 0xc9d, 0x8}}, 0x120)
openat$vcs(0xffffffffffffff9c, 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: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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE-openat$vcs
detailed listing:
executing program 0:
r0 = openat$uhid(0xffffffffffffff9c, &(0x7f00000001c0), 0x2, 0x0)
write$UHID_CREATE(r0, &(0x7f0000000200)={0x0, {'syz0\x00', 'syz0\x00', 'syz0\x00', &(0x7f0000000c40)=""/4096, 0x1000, 0xfc2c, 0x6, 0x0, 0xc9d, 0x8}}, 0x120)
openat$vcs(0xffffffffffffff9c, 0x0, 0x0, 0x0)

program crashed: INFO: task hung in uevent_show
single: successfully extracted reproducer
found reproducer with 3 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: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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE
detailed listing:
executing program 0:
r0 = openat$uhid(0xffffffffffffff9c, &(0x7f00000001c0), 0x2, 0x0)
write$UHID_CREATE(r0, &(0x7f0000000200)={0x0, {'syz0\x00', 'syz0\x00', 'syz0\x00', &(0x7f0000000c40)=""/4096, 0x1000, 0xfc2c, 0x6, 0x0, 0xc9d, 0x8}}, 0x120)

program crashed: INFO: task hung in corrupted
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid
detailed listing:
executing program 0:
openat$uhid(0xffffffffffffff9c, &(0x7f00000001c0), 0x2, 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: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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): write$UHID_CREATE
detailed listing:
executing program 0:
write$UHID_CREATE(0xffffffffffffffff, &(0x7f0000000200)={0x0, {'syz0\x00', 'syz0\x00', 'syz0\x00', &(0x7f0000000c40)=""/4096, 0x1000, 0xfc2c, 0x6, 0x0, 0xc9d, 0x8}}, 0x120)

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: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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE
detailed listing:
executing program 0:
r0 = openat$uhid(0xffffffffffffff9c, 0x0, 0x2, 0x0)
write$UHID_CREATE(r0, &(0x7f0000000200)={0x0, {'syz0\x00', 'syz0\x00', 'syz0\x00', &(0x7f0000000c40)=""/4096, 0x1000, 0xfc2c, 0x6, 0x0, 0xc9d, 0x8}}, 0x120)

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: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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE
detailed listing:
executing program 0:
r0 = openat$uhid(0xffffffffffffff9c, &(0x7f00000001c0), 0x2, 0x0)
write$UHID_CREATE(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: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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE
detailed listing:
executing program 0:
r0 = openat$uhid(0xffffffffffffff9c, &(0x7f00000001c0), 0x2, 0x0)
write$UHID_CREATE(r0, &(0x7f0000000200)={0x0, {'syz0\x00', 'syz0\x00', 'syz0\x00', 0x0, 0x0, 0xfc2c, 0x6, 0x0, 0xc9d, 0x8}}, 0x120)

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: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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE
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=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE
detailed listing:
executing program 0:
r0 = openat$uhid(0xffffffffffffff9c, &(0x7f00000001c0), 0x2, 0x0)
write$UHID_CREATE(r0, &(0x7f0000000200)={0x0, {'syz0\x00', 'syz0\x00', 'syz0\x00', &(0x7f0000000c40)=""/4096, 0x1000, 0xfc2c, 0x6, 0x0, 0xc9d, 0x8}}, 0x120)

program crashed: INFO: task hung in uhid_char_release
a never seen crash title: INFO: task hung in uhid_char_release, ignore
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE
detailed listing:
executing program 0:
r0 = openat$uhid(0xffffffffffffff9c, &(0x7f00000001c0), 0x2, 0x0)
write$UHID_CREATE(r0, &(0x7f0000000200)={0x0, {'syz0\x00', 'syz0\x00', 'syz0\x00', &(0x7f0000000c40)=""/4096, 0x1000, 0xfc2c, 0x6, 0x0, 0xc9d, 0x8}}, 0x120)

program did not crash
reproducing took 1h2m54.068656671s
repro crashed as (corrupted=true):
INFO: task syz.4.19:6043 blocked for more than 151 seconds.
      Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.19        state:D
 stack:27472 pid:6043  tgid:6043  ppid:5940   flags:0x00004006
 <TASK>
 free_nsproxy+0x47/0x470 kernel/nsproxy.c:193
 put_nsproxy include/linux/nsproxy.h:118 [inline]
 switch_task_namespaces+0xeb/0x100 kernel/nsproxy.c:251
 do_exit+0xad8/0x2d70 kernel/exit.c:937
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
 get_signal+0x24ed/0x26c0 kernel/signal.c:3017
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa23457ff19
RSP: 002b:00007ffc34eb44d8 EFLAGS: 00000246
 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000002ab01 RCX: 00007fa23457ff19
R13: 00007fa234745fa0 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>
INFO: task syz.2.22:6047 blocked for more than 156 seconds.
      Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
 <TASK>
 __cancel_work_sync+0x10c/0x130 kernel/workqueue.c:4351
 __fput+0x3f8/0xb60 fs/file_table.c:450
 task_work_run+0x14e/0x250 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f224617ff19
RSP: 002b:00007fffcb284308 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000000000002abd8 RCX: 00007f224617ff19
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f2246347ba0 R08: 0000000000000001 R09: 00007fffcb2845ef
R10: 00007f2246000000 R11: 0000000000000246 R12: 000000000002ac11
R13: 00007f2246345fa0 R14: 0000000000000032 R15: ffffffffffffffff

report is corrupted, running repro again
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE
detailed listing:
executing program 0:
r0 = openat$uhid(0xffffffffffffff9c, &(0x7f00000001c0), 0x2, 0x0)
write$UHID_CREATE(r0, &(0x7f0000000200)={0x0, {'syz0\x00', 'syz0\x00', 'syz0\x00', &(0x7f0000000c40)=""/4096, 0x1000, 0xfc2c, 0x6, 0x0, 0xc9d, 0x8}}, 0x120)

program crashed: INFO: task hung in uhid_char_release
final repro crashed as (corrupted=false):
INFO: task syz.0.15:5973 blocked for more than 148 seconds.
      Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.15        state:D
 stack:27472 pid:5973  tgid:5973  ppid:5909   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 schedule_timeout+0x244/0x280 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
 __flush_work+0x776/0xc30 kernel/workqueue.c:4231
 __cancel_work_sync+0x10c/0x130 kernel/workqueue.c:4351
 uhid_dev_destroy drivers/hid/uhid.c:584 [inline]
 uhid_char_release+0xc4/0x210 drivers/hid/uhid.c:662
 __fput+0x3f8/0xb60 fs/file_table.c:450
 task_work_run+0x14e/0x250 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbb0817ff19
RSP: 002b:00007fff085fe1d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000000f229 RCX: 00007fbb0817ff19
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fbb08347ba0 R08: 0000000000000001 R09: 00007fff085fe4bf
R10: 00007fbb08000000 R11: 0000000000000246 R12: 000000000000f25d
R13: 00007fbb08345fa0 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>
INFO: task syz.3.18:5977 blocked for more than 152 seconds.
      Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.18        state:D
 stack:26608 pid:5977  tgid:5977  ppid:5921   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 schedule_timeout+0x244/0x280 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
 __flush_work+0x776/0xc30 kernel/workqueue.c:4231