Extracting prog: 1m13.236836497s
Minimizing prog: 1m19.573653341s
Simplifying prog options: 1m51.746535409s
Extracting C: 26.301514864s
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:4 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
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x34, &(0x7f00000006c0)={{0x12, 0x1, 0x0, 0xfa, 0xbf, 0x52, 0x40, 0x2040, 0x26d, 0x576a, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x22, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0xf4, 0x0, 0x1, 0x68, 0xe5, 0x1e, 0x0, [], [{{0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7d, [@generic={0x7, 0x5, "839935191f"}]}}]}}]}}]}}, 0x0)

program crashed: KASAN: use-after-free Read in em28xx_init_extension
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=34.121691223s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.121691223s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2f, &(0x7f00000006c0)={{0x12, 0x1, 0x0, 0xfa, 0xbf, 0x52, 0x40, 0x2040, 0x26d, 0x576a, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1d, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0xf4, 0x0, 0x1, 0x68, 0xe5, 0x1e, 0x0, [], [{{0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7d, [@generic={0x2, 0x5}]}}]}}]}}]}}, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=34.121691223s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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
program crashed: BUG: corrupted list in em28xx_close_extension
a never seen crash title: BUG: corrupted list in em28xx_close_extension, ignore
simplifying guilty program options
testing program (duration=34.121691223s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x34, &(0x7f00000006c0)={{0x12, 0x1, 0x0, 0xfa, 0xbf, 0x52, 0x40, 0x2040, 0x26d, 0x576a, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x22, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0xf4, 0x0, 0x1, 0x68, 0xe5, 0x1e, 0x0, [], [{{0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7d, [@generic={0x7, 0x5, "839935191f"}]}}]}}]}}]}}, 0x0)

program crashed: BUG: corrupted list in em28xx_init_extension
a never seen crash title: BUG: corrupted list in em28xx_init_extension, ignore
testing program (duration=34.121691223s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x34, &(0x7f00000006c0)={{0x12, 0x1, 0x0, 0xfa, 0xbf, 0x52, 0x40, 0x2040, 0x26d, 0x576a, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x22, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0xf4, 0x0, 0x1, 0x68, 0xe5, 0x1e, 0x0, [], [{{0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7d, [@generic={0x7, 0x5, "839935191f"}]}}]}}]}}]}}, 0x0)

program did not crash
testing program (duration=34.121691223s, {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
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x34, &(0x7f00000006c0)={{0x12, 0x1, 0x0, 0xfa, 0xbf, 0x52, 0x40, 0x2040, 0x26d, 0x576a, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x22, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0xf4, 0x0, 0x1, 0x68, 0xe5, 0x1e, 0x0, [], [{{0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7d, [@generic={0x7, 0x5, "839935191f"}]}}]}}]}}]}}, 0x0)

program crashed: BUG: corrupted list in em28xx_init_extension
a never seen crash title: BUG: corrupted list in em28xx_init_extension, ignore
testing program (duration=34.121691223s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x34, &(0x7f00000006c0)={{0x12, 0x1, 0x0, 0xfa, 0xbf, 0x52, 0x40, 0x2040, 0x26d, 0x576a, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x22, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0xf4, 0x0, 0x1, 0x68, 0xe5, 0x1e, 0x0, [], [{{0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7d, [@generic={0x7, 0x5, "839935191f"}]}}]}}]}}]}}, 0x0)

program crashed: BUG: corrupted list in em28xx_close_extension
validation run: crashed=true
testing program (duration=34.121691223s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x34, &(0x7f00000006c0)={{0x12, 0x1, 0x0, 0xfa, 0xbf, 0x52, 0x40, 0x2040, 0x26d, 0x576a, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x22, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0xf4, 0x0, 0x1, 0x68, 0xe5, 0x1e, 0x0, [], [{{0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7d, [@generic={0x7, 0x5, "839935191f"}]}}]}}]}}]}}, 0x0)

program crashed: BUG: corrupted list in em28xx_close_extension
validation run: crashed=true
testing program (duration=34.121691223s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x34, &(0x7f00000006c0)={{0x12, 0x1, 0x0, 0xfa, 0xbf, 0x52, 0x40, 0x2040, 0x26d, 0x576a, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x22, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0xf4, 0x0, 0x1, 0x68, 0xe5, 0x1e, 0x0, [], [{{0x9, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7d, [@generic={0x7, 0x5, "839935191f"}]}}]}}]}}]}}, 0x0)

program crashed: BUG: corrupted list in em28xx_close_extension
validation run: crashed=true
reproducing took 6m30.667181593s
repro crashed as (corrupted=false):
list_del corruption. prev->next should be ffff888050ef0250, but was 000000113d0b3013. (prev=ffff888053b8c250)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 843 Comm: kworker/1:2 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: usb_hub_wq hub_event
RIP: 0010:__list_del_entry_valid_or_report+0x17a/0x200 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 20 e7 f1 8b e8 27 03 e8 fc 90 <0f> 0b 4c 89 e7 e8 3c f8 4d fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc9000564f660 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff888050ef0250 RCX: ffffffff819b9f09
RDX: 0000000000000000 RSI: ffffffff819c1a36 RDI: 0000000000000005
RBP: ffff888053b8c250 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: ffff888054710250
R13: ffff888050ef0000 R14: ffffffff8fb83fe8 R15: ffffed100a1de44b
FS:  0000000000000000(0000) GS:ffff8880d6ad9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564049bbc520 CR3: 00000000341d6000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del include/linux/list.h:237 [inline]
 em28xx_close_extension+0x10b/0x2b0 drivers/media/usb/em28xx/em28xx-core.c:1137
 em28xx_usb_disconnect+0x19d/0x610 drivers/media/usb/em28xx/em28xx-cards.c:4197
 usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:571 [inline]
 device_remove+0x125/0x170 drivers/base/dd.c:563
 __device_release_driver drivers/base/dd.c:1274 [inline]
 device_release_driver_internal+0x44b/0x620 drivers/base/dd.c:1297
 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579
 device_del+0x396/0x9f0 drivers/base/core.c:3878
 usb_disable_device+0x355/0x7d0 drivers/usb/core/message.c:1418
 usb_disconnect+0x2e1/0x9c0 drivers/usb/core/hub.c:2344
 hub_port_connect drivers/usb/core/hub.c:5406 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5870 [inline]
 hub_event+0x1c81/0x4fe0 drivers/usb/core/hub.c:5952
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x17a/0x200 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 20 e7 f1 8b e8 27 03 e8 fc 90 <0f> 0b 4c 89 e7 e8 3c f8 4d fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc9000564f660 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff888050ef0250 RCX: ffffffff819b9f09
RDX: 0000000000000000 RSI: ffffffff819c1a36 RDI: 0000000000000005
RBP: ffff888053b8c250 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: ffff888054710250
R13: ffff888050ef0000 R14: ffffffff8fb83fe8 R15: ffffed100a1de44b
FS:  0000000000000000(0000) GS:ffff8880d6ad9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558a919808 CR3: 00000000341d6000 CR4: 0000000000352ef0

final repro crashed as (corrupted=false):
list_del corruption. prev->next should be ffff888050ef0250, but was 000000113d0b3013. (prev=ffff888053b8c250)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 843 Comm: kworker/1:2 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: usb_hub_wq hub_event
RIP: 0010:__list_del_entry_valid_or_report+0x17a/0x200 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 20 e7 f1 8b e8 27 03 e8 fc 90 <0f> 0b 4c 89 e7 e8 3c f8 4d fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc9000564f660 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff888050ef0250 RCX: ffffffff819b9f09
RDX: 0000000000000000 RSI: ffffffff819c1a36 RDI: 0000000000000005
RBP: ffff888053b8c250 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: ffff888054710250
R13: ffff888050ef0000 R14: ffffffff8fb83fe8 R15: ffffed100a1de44b
FS:  0000000000000000(0000) GS:ffff8880d6ad9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564049bbc520 CR3: 00000000341d6000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del include/linux/list.h:237 [inline]
 em28xx_close_extension+0x10b/0x2b0 drivers/media/usb/em28xx/em28xx-core.c:1137
 em28xx_usb_disconnect+0x19d/0x610 drivers/media/usb/em28xx/em28xx-cards.c:4197
 usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:571 [inline]
 device_remove+0x125/0x170 drivers/base/dd.c:563
 __device_release_driver drivers/base/dd.c:1274 [inline]
 device_release_driver_internal+0x44b/0x620 drivers/base/dd.c:1297
 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579
 device_del+0x396/0x9f0 drivers/base/core.c:3878
 usb_disable_device+0x355/0x7d0 drivers/usb/core/message.c:1418
 usb_disconnect+0x2e1/0x9c0 drivers/usb/core/hub.c:2344
 hub_port_connect drivers/usb/core/hub.c:5406 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5870 [inline]
 hub_event+0x1c81/0x4fe0 drivers/usb/core/hub.c:5952
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x17a/0x200 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 20 e7 f1 8b e8 27 03 e8 fc 90 <0f> 0b 4c 89 e7 e8 3c f8 4d fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc9000564f660 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff888050ef0250 RCX: ffffffff819b9f09
RDX: 0000000000000000 RSI: ffffffff819c1a36 RDI: 0000000000000005
RBP: ffff888053b8c250 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: ffff888054710250
R13: ffff888050ef0000 R14: ffffffff8fb83fe8 R15: ffffed100a1de44b
FS:  0000000000000000(0000) GS:ffff8880d6ad9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558a919808 CR3: 00000000341d6000 CR4: 0000000000352ef0