Extracting prog: 3m1.797430103s
Minimizing prog: 37m58.55032877s
Simplifying prog options: 0s
Extracting C: 45.286838099s
Simplifying C: 14m19.523887666s


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-syz_usb_disconnect-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040a61b01000100000000010902200001010080320904"], 0x0)
syz_usb_disconnect(r0)
syz_open_dev$dvb_frontend(&(0x7f0000000100), 0x1, 0x802)

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: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-syz_usb_disconnect-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040a61b01000100000000010902200001010080320904"], 0x0)
syz_usb_disconnect(r0)
syz_open_dev$dvb_frontend(&(0x7f0000000100), 0x1, 0x802)

program crashed: WARNING in as102_stream_ctrl
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=6m0s, {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-syz_usb_disconnect
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040a61b01000100000000010902200001010080320904"], 0x0)
syz_usb_disconnect(r0)

program did not crash
testing program (duration=6m0s, {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-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040a61b01000100000000010902200001010080320904"], 0x0)
syz_open_dev$dvb_frontend(&(0x7f0000000100), 0x1, 0x802)

program did not crash
testing program (duration=6m0s, {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_disconnect-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
syz_usb_disconnect(0xffffffffffffffff)
syz_open_dev$dvb_frontend(&(0x7f0000000100), 0x1, 0x802)

program did not crash
testing program (duration=6m0s, {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-syz_usb_disconnect-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x32, 0x0, 0x0)
syz_usb_disconnect(r0)
syz_open_dev$dvb_frontend(&(0x7f0000000100), 0x1, 0x802)

program did not crash
testing program (duration=6m0s, {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-syz_usb_disconnect-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB], 0x0)
syz_usb_disconnect(r0)
syz_open_dev$dvb_frontend(&(0x7f0000000100), 0x1, 0x802)

program did not crash
testing program (duration=6m0s, {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-syz_usb_disconnect-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040a61b01000100000000010902200001010080320904"], 0x0)
syz_usb_disconnect(r0)
syz_open_dev$dvb_frontend(0x0, 0x1, 0x802)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {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-syz_usb_disconnect-syz_open_dev$dvb_frontend
program crashed: WARNING in as102_stream_ctrl
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
program crashed: WARNING in as102_stream_ctrl
testing compiled C program (duration=6m0s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
program crashed: WARNING in as102_stream_ctrl
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
program crashed: WARNING in as102_stream_ctrl
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
program crashed: WARNING in as102_stream_ctrl
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
program crashed: WARNING in as102_stream_ctrl
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
program crashed: WARNING in as102_stream_ctrl
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040a61b01000100000000010902200001010080320904"], 0x0)
syz_usb_disconnect(r0)
syz_open_dev$dvb_frontend(&(0x7f0000000100), 0x1, 0x802)

program did not crash
validation run: crashed=false
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040a61b01000100000000010902200001010080320904"], 0x0)
syz_usb_disconnect(r0)
syz_open_dev$dvb_frontend(&(0x7f0000000100), 0x1, 0x802)

program did not crash
validation run: crashed=false
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040a61b01000100000000010902200001010080320904"], 0x0)
syz_usb_disconnect(r0)
syz_open_dev$dvb_frontend(&(0x7f0000000100), 0x1, 0x802)

program crashed: WARNING in as102_stream_ctrl
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040a61b01000100000000010902200001010080320904"], 0x0)
syz_usb_disconnect(r0)
syz_open_dev$dvb_frontend(&(0x7f0000000100), 0x1, 0x802)

program crashed: WARNING in as102_stream_ctrl
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_disconnect-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040a61b01000100000000010902200001010080320904"], 0x0)
syz_usb_disconnect(r0)
syz_open_dev$dvb_frontend(&(0x7f0000000100), 0x1, 0x802)

program crashed: WARNING in as102_stream_ctrl
validation run: crashed=true
reproducing took 1h17m16.270158324s
repro crashed as (corrupted=false):
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: kernel/locking/mutex.c:625 at __mutex_lock_common kernel/locking/mutex.c:625 [inline], CPU#1: syz.2.160/6254
WARNING: kernel/locking/mutex.c:625 at __mutex_lock+0x944/0x1bc0 kernel/locking/mutex.c:821, CPU#1: syz.2.160/6254
Modules linked in:

CPU: 1 UID: 0 PID: 6254 Comm: syz.2.160 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline]
RIP: 0010:__mutex_lock+0x94b/0x1bc0 kernel/locking/mutex.c:821
Code: 0f b6 14 11 38 d0 7c 08 84 d2 0f 85 b4 10 00 00 44 8b 05 d8 d5 7a 05 45 85 c0 75 13 48 8d 3d ac da 7d 05 48 c7 c6 a0 d2 ef 8b <67> 48 0f b9 3a 90 e9 1b f8 ff ff 4d 8d a7 f0 0a 00 00 4c 89 e7 e8
RSP: 0018:ffffc900044e76a0 EFLAGS: 00010246
RAX: 0000000000000003 RBX: ffff88802e27c010 RCX: 1ffffffff2287150
RDX: 0000000000000000 RSI: ffffffff8befd2a0 RDI: ffffffff91468f60
RBP: ffffc900044e7810 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888026945320
FS:  0000555562f19500(0000) GS:ffff8880d5ca2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd42cc70050 CR3: 0000000029513000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 as102_stream_ctrl+0x28/0xd0 drivers/media/usb/as102/as102_drv.c:259
 __dvb_frontend_open+0x122/0xf20 drivers/media/dvb-core/dvb_frontend.c:2772
 dvb_frontend_open+0x77c/0x910 drivers/media/dvb-core/dvb_frontend.c:2884
 dvb_device_open+0x270/0x3b0 drivers/media/dvb-core/dvbdev.c:109
 chrdev_open+0x234/0x6a0 fs/char_dev.c:411
 do_dentry_open+0x6ab/0x14d0 fs/open.c:996
 vfs_open+0x82/0x3f0 fs/open.c:1101
 do_open fs/namei.c:4837 [inline]
 path_openat+0x19fa/0x2440 fs/namei.c:5000
 do_file_open+0x20e/0x430 fs/namei.c:5029
 do_sys_openat2+0x10f/0x1e0 fs/open.c:1417
 do_sys_open fs/open.c:1423 [inline]
 __do_sys_openat fs/open.c:1439 [inline]
 __se_sys_openat fs/open.c:1434 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1434
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd42cd5e98e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fff3898ca48 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000555562f19500 RCX: 00007fd42cd5e98e
RDX: 0000000000000802 RSI: 00007fff3898cb20 RDI: ffffffffffffff9c
RBP: 00007fff3898cb20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007fd42d025fac R14: 00007fd42d025fa0 R15: 00007fd42d025fa0
 </TASK>
----------------
Code disassembly (best guess):
   0:	0f b6 14 11          	movzbl (%rcx,%rdx,1),%edx
   4:	38 d0                	cmp    %dl,%al
   6:	7c 08                	jl     0x10
   8:	84 d2                	test   %dl,%dl
   a:	0f 85 b4 10 00 00    	jne    0x10c4
  10:	44 8b 05 d8 d5 7a 05 	mov    0x57ad5d8(%rip),%r8d        # 0x57ad5ef
  17:	45 85 c0             	test   %r8d,%r8d
  1a:	75 13                	jne    0x2f
  1c:	48 8d 3d ac da 7d 05 	lea    0x57ddaac(%rip),%rdi        # 0x57ddacf
  23:	48 c7 c6 a0 d2 ef 8b 	mov    $0xffffffff8befd2a0,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	90                   	nop
  30:	e9 1b f8 ff ff       	jmp    0xfffff850
  35:	4d 8d a7 f0 0a 00 00 	lea    0xaf0(%r15),%r12
  3c:	4c 89 e7             	mov    %r12,%rdi
  3f:	e8                   	.byte 0xe8

final repro crashed as (corrupted=false):
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: kernel/locking/mutex.c:625 at __mutex_lock_common kernel/locking/mutex.c:625 [inline], CPU#1: syz.2.160/6254
WARNING: kernel/locking/mutex.c:625 at __mutex_lock+0x944/0x1bc0 kernel/locking/mutex.c:821, CPU#1: syz.2.160/6254
Modules linked in:

CPU: 1 UID: 0 PID: 6254 Comm: syz.2.160 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline]
RIP: 0010:__mutex_lock+0x94b/0x1bc0 kernel/locking/mutex.c:821
Code: 0f b6 14 11 38 d0 7c 08 84 d2 0f 85 b4 10 00 00 44 8b 05 d8 d5 7a 05 45 85 c0 75 13 48 8d 3d ac da 7d 05 48 c7 c6 a0 d2 ef 8b <67> 48 0f b9 3a 90 e9 1b f8 ff ff 4d 8d a7 f0 0a 00 00 4c 89 e7 e8
RSP: 0018:ffffc900044e76a0 EFLAGS: 00010246
RAX: 0000000000000003 RBX: ffff88802e27c010 RCX: 1ffffffff2287150
RDX: 0000000000000000 RSI: ffffffff8befd2a0 RDI: ffffffff91468f60
RBP: ffffc900044e7810 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888026945320
FS:  0000555562f19500(0000) GS:ffff8880d5ca2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd42cc70050 CR3: 0000000029513000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 as102_stream_ctrl+0x28/0xd0 drivers/media/usb/as102/as102_drv.c:259
 __dvb_frontend_open+0x122/0xf20 drivers/media/dvb-core/dvb_frontend.c:2772
 dvb_frontend_open+0x77c/0x910 drivers/media/dvb-core/dvb_frontend.c:2884
 dvb_device_open+0x270/0x3b0 drivers/media/dvb-core/dvbdev.c:109
 chrdev_open+0x234/0x6a0 fs/char_dev.c:411
 do_dentry_open+0x6ab/0x14d0 fs/open.c:996
 vfs_open+0x82/0x3f0 fs/open.c:1101
 do_open fs/namei.c:4837 [inline]
 path_openat+0x19fa/0x2440 fs/namei.c:5000
 do_file_open+0x20e/0x430 fs/namei.c:5029
 do_sys_openat2+0x10f/0x1e0 fs/open.c:1417
 do_sys_open fs/open.c:1423 [inline]
 __do_sys_openat fs/open.c:1439 [inline]
 __se_sys_openat fs/open.c:1434 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1434
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd42cd5e98e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fff3898ca48 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000555562f19500 RCX: 00007fd42cd5e98e
RDX: 0000000000000802 RSI: 00007fff3898cb20 RDI: ffffffffffffff9c
RBP: 00007fff3898cb20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007fd42d025fac R14: 00007fd42d025fa0 R15: 00007fd42d025fa0
 </TASK>
----------------
Code disassembly (best guess):
   0:	0f b6 14 11          	movzbl (%rcx,%rdx,1),%edx
   4:	38 d0                	cmp    %dl,%al
   6:	7c 08                	jl     0x10
   8:	84 d2                	test   %dl,%dl
   a:	0f 85 b4 10 00 00    	jne    0x10c4
  10:	44 8b 05 d8 d5 7a 05 	mov    0x57ad5d8(%rip),%r8d        # 0x57ad5ef
  17:	45 85 c0             	test   %r8d,%r8d
  1a:	75 13                	jne    0x2f
  1c:	48 8d 3d ac da 7d 05 	lea    0x57ddaac(%rip),%rdi        # 0x57ddacf
  23:	48 c7 c6 a0 d2 ef 8b 	mov    $0xffffffff8befd2a0,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	90                   	nop
  30:	e9 1b f8 ff ff       	jmp    0xfffff850
  35:	4d 8d a7 f0 0a 00 00 	lea    0xaf0(%r15),%r12
  3c:	4c 89 e7             	mov    %r12,%rdi
  3f:	e8                   	.byte 0xe8