Extracting prog: 1m26.327632167s
Minimizing prog: 2m21.153071603s
Simplifying prog options: 2m40.220599546s
Extracting C: 23.33056696s
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x5, 0x2d, &(0x7f00000005c0)=ANY=[@ANYBLOB="9f01000083667d1040206502d14e0102030109021b000100000000090400000190f19c000905f3ede8e9384088477da5163aeacac5aef6b35899848f884763144ec6a2aeada635e54cdc8fb569daf4797849ac735823c41a718ab016b0c1ec7613250780", @ANYRESHEX=0x0, @ANYRESDEC=0x0, @ANYRESHEX, @ANYRES32, @ANYRES8=0x0], 0x0)

program crashed: BUG: corrupted list in em28xx_close_extension
program crashed: BUG: corrupted list in em28xx_close_extension
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=37.617194463s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x5, 0x2d, 0x0, 0x0)

program did not crash
testing program (duration=37.617194463s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x5, 0x2d, &(0x7f00000005c0)=ANY=[], 0x0)

program did not crash
testing program (duration=37.617194463s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x5, 0x2d, &(0x7f00000005c0)=ANY=[@ANYBLOB, @ANYRESHEX=0x0, @ANYRESDEC=0x0, @ANYRESHEX, @ANYRES32, @ANYRES8=0x0], 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=37.617194463s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: use-after-free Read in em28xx_close_extension
a never seen crash title: KASAN: use-after-free Read in em28xx_close_extension, ignore
simplifying guilty program options
testing program (duration=37.617194463s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x5, 0x2d, &(0x7f00000005c0)=ANY=[@ANYBLOB="9f01000083667d1040206502d14e0102030109021b000100000000090400000190f19c000905f3ede8e9384088477da5163aeacac5aef6b35899848f884763144ec6a2aeada635e54cdc8fb569daf4797849ac735823c41a718ab016b0c1ec7613250780", @ANYRESHEX=0x0, @ANYRESDEC=0x0, @ANYRESHEX, @ANYRES32, @ANYRES8=0x0], 0x0)

program crashed: BUG: corrupted list in em28xx_close_extension
extracting C reproducer
testing compiled C program (duration=37.617194463s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: use-after-free Read in em28xx_close_extension
a never seen crash title: KASAN: use-after-free Read in em28xx_close_extension, ignore
testing program (duration=37.617194463s, {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}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x5, 0x2d, &(0x7f00000005c0)=ANY=[@ANYBLOB="9f01000083667d1040206502d14e0102030109021b000100000000090400000190f19c000905f3ede8e9384088477da5163aeacac5aef6b35899848f884763144ec6a2aeada635e54cdc8fb569daf4797849ac735823c41a718ab016b0c1ec7613250780", @ANYRESHEX=0x0, @ANYRESDEC=0x0, @ANYRESHEX, @ANYRES32, @ANYRES8=0x0], 0x0)

program did not crash
testing program (duration=37.617194463s, {Threaded:false 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}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x5, 0x2d, &(0x7f00000005c0)=ANY=[@ANYBLOB="9f01000083667d1040206502d14e0102030109021b000100000000090400000190f19c000905f3ede8e9384088477da5163aeacac5aef6b35899848f884763144ec6a2aeada635e54cdc8fb569daf4797849ac735823c41a718ab016b0c1ec7613250780", @ANYRESHEX=0x0, @ANYRESDEC=0x0, @ANYRESHEX, @ANYRES32, @ANYRES8=0x0], 0x0)

program crashed: BUG: corrupted list in em28xx_init_extension
a never seen crash title: BUG: corrupted list in em28xx_init_extension, ignore
reproducing took 6m49.237806178s
repro crashed as (corrupted=false):
em28xx 8-1:0.0: Disconnecting em28xx
 non-slab/vmalloc memory
list_del corruption. next->prev should be ffff888053bec250, but was 0000000000000000. (next=ffff8880370c0250)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:65!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 2 UID: 0 PID: 24 Comm: kworker/2:0 Not tainted 6.15.0-syzkaller-13655-gbdc7f8c5adad #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+0x1b3/0x200 lib/list_debug.c:65
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4b 49 8b 54 24 08 4c 89 e1 48 89 de 48 c7 c7 40 74 15 8c e8 5e 9b b9 fc 90 <0f> 0b e8 76 80 41 fd e9 6b fe ff ff 48 89 df e8 69 80 41 fd e9 7d
RSP: 0018:ffffc9000062f668 EFLAGS: 00010286
RAX: 000000000000006d RBX: ffff888053bec250 RCX: ffffffff819b01d9
RDX: 0000000000000000 RSI: ffffffff819b8066 RDI: 0000000000000005
RBP: ffff8880370c0258 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: ffff8880370c0250
R13: ffff888053bec000 R14: ffffffff8fddbe08 R15: ffffed100a77dc47
FS:  0000000000000000(0000) GS:ffff8880d6954000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff67c88f50 CR3: 0000000050996000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del include/linux/list.h:229 [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+0x1da/0x9a0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:569 [inline]
 device_remove+0x125/0x170 drivers/base/dd.c:561
 __device_release_driver drivers/base/dd.c:1272 [inline]
 device_release_driver_internal+0x44b/0x620 drivers/base/dd.c:1295
 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579
 device_del+0x396/0x9f0 drivers/base/core.c:3881
 usb_disable_device+0x355/0x7d0 drivers/usb/core/message.c:1418
 usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2316
 hub_port_connect drivers/usb/core/hub.c:5375 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5675 [inline]
 port_event drivers/usb/core/hub.c:5835 [inline]
 hub_event+0x1c57/0x4fa0 drivers/usb/core/hub.c:5917
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3321 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148
 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+0x1b3/0x200 lib/list_debug.c:65
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4b 49 8b 54 24 08 4c 89 e1 48 89 de 48 c7 c7 40 74 15 8c e8 5e 9b b9 fc 90 <0f> 0b e8 76 80 41 fd e9 6b fe ff ff 48 89 df e8 69 80 41 fd e9 7d
RSP: 0018:ffffc9000062f668 EFLAGS: 00010286
RAX: 000000000000006d RBX: ffff888053bec250 RCX: ffffffff819b01d9
RDX: 0000000000000000 RSI: ffffffff819b8066 RDI: 0000000000000005
RBP: ffff8880370c0258 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: ffff8880370c0250
R13: ffff888053bec000 R14: ffffffff8fddbe08 R15: ffffed100a77dc47
FS:  0000000000000000(0000) GS:ffff8880d6954000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff67c88f50 CR3: 0000000050996000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

final repro crashed as (corrupted=false):
em28xx 8-1:0.0: Disconnecting em28xx
 non-slab/vmalloc memory
list_del corruption. next->prev should be ffff888053bec250, but was 0000000000000000. (next=ffff8880370c0250)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:65!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 2 UID: 0 PID: 24 Comm: kworker/2:0 Not tainted 6.15.0-syzkaller-13655-gbdc7f8c5adad #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+0x1b3/0x200 lib/list_debug.c:65
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4b 49 8b 54 24 08 4c 89 e1 48 89 de 48 c7 c7 40 74 15 8c e8 5e 9b b9 fc 90 <0f> 0b e8 76 80 41 fd e9 6b fe ff ff 48 89 df e8 69 80 41 fd e9 7d
RSP: 0018:ffffc9000062f668 EFLAGS: 00010286
RAX: 000000000000006d RBX: ffff888053bec250 RCX: ffffffff819b01d9
RDX: 0000000000000000 RSI: ffffffff819b8066 RDI: 0000000000000005
RBP: ffff8880370c0258 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: ffff8880370c0250
R13: ffff888053bec000 R14: ffffffff8fddbe08 R15: ffffed100a77dc47
FS:  0000000000000000(0000) GS:ffff8880d6954000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff67c88f50 CR3: 0000000050996000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del include/linux/list.h:229 [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+0x1da/0x9a0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:569 [inline]
 device_remove+0x125/0x170 drivers/base/dd.c:561
 __device_release_driver drivers/base/dd.c:1272 [inline]
 device_release_driver_internal+0x44b/0x620 drivers/base/dd.c:1295
 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579
 device_del+0x396/0x9f0 drivers/base/core.c:3881
 usb_disable_device+0x355/0x7d0 drivers/usb/core/message.c:1418
 usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2316
 hub_port_connect drivers/usb/core/hub.c:5375 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5675 [inline]
 port_event drivers/usb/core/hub.c:5835 [inline]
 hub_event+0x1c57/0x4fa0 drivers/usb/core/hub.c:5917
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3321 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148
 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+0x1b3/0x200 lib/list_debug.c:65
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4b 49 8b 54 24 08 4c 89 e1 48 89 de 48 c7 c7 40 74 15 8c e8 5e 9b b9 fc 90 <0f> 0b e8 76 80 41 fd e9 6b fe ff ff 48 89 df e8 69 80 41 fd e9 7d
RSP: 0018:ffffc9000062f668 EFLAGS: 00010286
RAX: 000000000000006d RBX: ffff888053bec250 RCX: ffffffff819b01d9
RDX: 0000000000000000 RSI: ffffffff819b8066 RDI: 0000000000000005
RBP: ffff8880370c0258 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: ffff8880370c0250
R13: ffff888053bec000 R14: ffffffff8fddbe08 R15: ffffed100a77dc47
FS:  0000000000000000(0000) GS:ffff8880d6954000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff67c88f50 CR3: 0000000050996000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400