Extracting prog: 1m55.988008257s
Minimizing prog: 5m8.315785732s
Simplifying prog options: 0s
Extracting C: 38.17495988s
Simplifying C: 5m19.215519317s


extracting reproducer from 30 programs
first checking the prog from the crash report
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$comedi-ioctl$COMEDI_DEVCONFIG
detailed listing:
executing program 0:
r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi2\x00', 0x109000, 0x0)
ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'c6xdigio\x00', [0x8, 0x6, 0x5, 0x400, 0x3, 0x1, 0x5f, 0x1, 0x7f, 0x5, 0x0, 0x1, 0x2, 0x9, 0x0, 0xb, 0x9, 0x6, 0xe8, 0x6, 0x80000000, 0x6, 0x7, 0x641, 0x7, 0xa, 0x5, 0xfff, 0x6, 0x7, 0x1]})

program crashed: WARNING in driver_unregister
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=45.391268295s, {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$comedi
detailed listing:
executing program 0:
openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi2\x00', 0x109000, 0x0)

program did not crash
testing program (duration=45.391268295s, {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}}): ioctl$COMEDI_DEVCONFIG
detailed listing:
executing program 0:
ioctl$COMEDI_DEVCONFIG(0xffffffffffffffff, 0x40946400, &(0x7f00000000c0)={'c6xdigio\x00', [0x8, 0x6, 0x5, 0x400, 0x3, 0x1, 0x5f, 0x1, 0x7f, 0x5, 0x0, 0x1, 0x2, 0x9, 0x0, 0xb, 0x9, 0x6, 0xe8, 0x6, 0x80000000, 0x6, 0x7, 0x641, 0x7, 0xa, 0x5, 0xfff, 0x6, 0x7, 0x1]})

program did not crash
testing program (duration=45.391268295s, {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$comedi-ioctl$COMEDI_DEVCONFIG
detailed listing:
executing program 0:
r0 = openat$comedi(0xffffffffffffff9c, 0x0, 0x109000, 0x0)
ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'c6xdigio\x00', [0x8, 0x6, 0x5, 0x400, 0x3, 0x1, 0x5f, 0x1, 0x7f, 0x5, 0x0, 0x1, 0x2, 0x9, 0x0, 0xb, 0x9, 0x6, 0xe8, 0x6, 0x80000000, 0x6, 0x7, 0x641, 0x7, 0xa, 0x5, 0xfff, 0x6, 0x7, 0x1]})

program did not crash
testing program (duration=45.391268295s, {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$comedi-ioctl$COMEDI_DEVCONFIG
detailed listing:
executing program 0:
r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi2\x00', 0x109000, 0x0)
ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, 0x0)

program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
extracting C reproducer
testing compiled C program (duration=45.391268295s, {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$comedi-ioctl$COMEDI_DEVCONFIG
program crashed: WARNING in driver_unregister
simplifying C reproducer
testing compiled C program (duration=45.391268295s, {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$comedi-ioctl$COMEDI_DEVCONFIG
program crashed: WARNING in driver_unregister
testing compiled C program (duration=45.391268295s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false 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$comedi-ioctl$COMEDI_DEVCONFIG
program crashed: WARNING in driver_unregister
testing compiled C program (duration=45.391268295s, {Threaded:false Repeat:false 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:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$comedi-ioctl$COMEDI_DEVCONFIG
program crashed: WARNING in driver_unregister
testing compiled C program (duration=45.391268295s, {Threaded:false Repeat:false 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG
program crashed: WARNING in driver_unregister
testing compiled C program (duration=45.391268295s, {Threaded:false Repeat:false 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG
program crashed: WARNING in driver_unregister
testing compiled C program (duration=45.391268295s, {Threaded:false Repeat:false 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG
program crashed: WARNING in driver_unregister
testing compiled C program (duration=45.391268295s, {Threaded:false Repeat:false 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG
program crashed: WARNING in driver_unregister
testing program (duration=45.391268295s, {Threaded:false Repeat:false 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG
detailed listing:
executing program 0:
r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi2\x00', 0x109000, 0x0)
ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'c6xdigio\x00', [0x8, 0x6, 0x5, 0x400, 0x3, 0x1, 0x5f, 0x1, 0x7f, 0x5, 0x0, 0x1, 0x2, 0x9, 0x0, 0xb, 0x9, 0x6, 0xe8, 0x6, 0x80000000, 0x6, 0x7, 0x641, 0x7, 0xa, 0x5, 0xfff, 0x6, 0x7, 0x1]})

program crashed: WARNING in driver_unregister
validation run: crashed=true
testing program (duration=45.391268295s, {Threaded:false Repeat:false 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG
detailed listing:
executing program 0:
r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi2\x00', 0x109000, 0x0)
ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'c6xdigio\x00', [0x8, 0x6, 0x5, 0x400, 0x3, 0x1, 0x5f, 0x1, 0x7f, 0x5, 0x0, 0x1, 0x2, 0x9, 0x0, 0xb, 0x9, 0x6, 0xe8, 0x6, 0x80000000, 0x6, 0x7, 0x641, 0x7, 0xa, 0x5, 0xfff, 0x6, 0x7, 0x1]})

program crashed: WARNING in driver_unregister
validation run: crashed=true
testing program (duration=45.391268295s, {Threaded:false Repeat:false 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}}): openat$comedi-ioctl$COMEDI_DEVCONFIG
detailed listing:
executing program 0:
r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi2\x00', 0x109000, 0x0)
ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'c6xdigio\x00', [0x8, 0x6, 0x5, 0x400, 0x3, 0x1, 0x5f, 0x1, 0x7f, 0x5, 0x0, 0x1, 0x2, 0x9, 0x0, 0xb, 0x9, 0x6, 0xe8, 0x6, 0x80000000, 0x6, 0x7, 0x641, 0x7, 0xa, 0x5, 0xfff, 0x6, 0x7, 0x1]})

program crashed: WARNING in driver_unregister
validation run: crashed=true
reproducing took 16m31.83004639s
repro crashed as (corrupted=false):
comedi comedi2: c6xdigio: I/O port conflict (0x8,3)
------------[ cut here ]------------
Unexpected driver unregister!
WARNING: CPU: 0 PID: 4317 at drivers/base/driver.c:263 driver_unregister+0x8e/0xa0 drivers/base/driver.c:263
Modules linked in:
CPU: 0 PID: 4317 Comm: syz.0.16 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:driver_unregister+0x8e/0xa0 drivers/base/driver.c:263
Code: e8 a7 8f 22 fd 48 89 df 5b 41 5e 41 5f e9 ea 63 ff ff e8 05 e8 ad fc eb 05 e8 fe e7 ad fc 48 c7 c7 20 84 7b 8a e8 d2 dc d4 04 <0f> 0b 5b 41 5e 41 5f c3 00 00 cc cc 00 00 cc cc 00 00 41 57 41 56
RSP: 0018:ffffc9000305fa58 EFLAGS: 00010246
RAX: 360421b8b80e2700 RBX: ffffffff8d12b3a0 RCX: ffff8880210b5940
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed10172067a8
R10: ffffed10172067a8 R11: 1ffff110172067a7 R12: ffff888029d9f000
R13: ffff888029d9f120 R14: 0000000000000000 R15: dffffc0000000000
FS:  000055557cec7500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fc5ffff CR3: 0000000020804000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 comedi_device_detach+0x12d/0x6e0 drivers/comedi/drivers.c:207
 comedi_device_attach+0x55d/0x650 drivers/comedi/drivers.c:1000
 do_devconfig_ioctl drivers/comedi/comedi_fops.c:851 [inline]
 comedi_unlocked_ioctl+0x5ec/0xe90 drivers/comedi/comedi_fops.c:2131
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f416bc77929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff67205408 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f416be9efa0 RCX: 00007f416bc77929
RDX: 00002000000000c0 RSI: 0000000040946400 RDI: 0000000000000003
RBP: 00007f416bcf9b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f416be9efa0 R14: 00007f416be9efa0 R15: 0000000000000003
 </TASK>

final repro crashed as (corrupted=false):
comedi comedi2: c6xdigio: I/O port conflict (0x8,3)
------------[ cut here ]------------
Unexpected driver unregister!
WARNING: CPU: 0 PID: 4317 at drivers/base/driver.c:263 driver_unregister+0x8e/0xa0 drivers/base/driver.c:263
Modules linked in:
CPU: 0 PID: 4317 Comm: syz.0.16 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:driver_unregister+0x8e/0xa0 drivers/base/driver.c:263
Code: e8 a7 8f 22 fd 48 89 df 5b 41 5e 41 5f e9 ea 63 ff ff e8 05 e8 ad fc eb 05 e8 fe e7 ad fc 48 c7 c7 20 84 7b 8a e8 d2 dc d4 04 <0f> 0b 5b 41 5e 41 5f c3 00 00 cc cc 00 00 cc cc 00 00 41 57 41 56
RSP: 0018:ffffc9000305fa58 EFLAGS: 00010246
RAX: 360421b8b80e2700 RBX: ffffffff8d12b3a0 RCX: ffff8880210b5940
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed10172067a8
R10: ffffed10172067a8 R11: 1ffff110172067a7 R12: ffff888029d9f000
R13: ffff888029d9f120 R14: 0000000000000000 R15: dffffc0000000000
FS:  000055557cec7500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fc5ffff CR3: 0000000020804000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 comedi_device_detach+0x12d/0x6e0 drivers/comedi/drivers.c:207
 comedi_device_attach+0x55d/0x650 drivers/comedi/drivers.c:1000
 do_devconfig_ioctl drivers/comedi/comedi_fops.c:851 [inline]
 comedi_unlocked_ioctl+0x5ec/0xe90 drivers/comedi/comedi_fops.c:2131
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f416bc77929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff67205408 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f416be9efa0 RCX: 00007f416bc77929
RDX: 00002000000000c0 RSI: 0000000040946400 RDI: 0000000000000003
RBP: 00007f416bcf9b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f416be9efa0 R14: 00007f416be9efa0 R15: 0000000000000003
 </TASK>