Extracting prog: 2m17.287366025s
Minimizing prog: 11m8.088295703s
Simplifying prog options: 0s
Extracting C: 36.134790697s
Simplifying C: 11m2.129425742s


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_open_dev$I2C-ioctl$I2C_RDWR
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_RDWR(r0, 0x707, &(0x7f0000000a40)={&(0x7f0000000140)=[{0x18, 0x4000, 0x0, 0x0}], 0x1})

program crashed: general protection fault in dvb_usbv2_generic_write
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=45.44997994s, {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$I2C
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)

program did not crash
testing program (duration=45.44997994s, {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-ioctl$I2C_RDWR
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
ioctl$I2C_RDWR(0xffffffffffffffff, 0x707, &(0x7f0000000a40)={&(0x7f0000000140)=[{0x18, 0x4000, 0x0, 0x0}], 0x1})

program did not crash
testing program (duration=45.44997994s, {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_open_dev$I2C-ioctl$I2C_RDWR
detailed listing:
executing program 0:
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_RDWR(r0, 0x707, &(0x7f0000000a40)={&(0x7f0000000140)=[{0x18, 0x4000, 0x0, 0x0}], 0x1})

program did not crash
testing program (duration=45.44997994s, {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$I2C-ioctl$I2C_RDWR
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, 0x0, 0x0)
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_RDWR(r0, 0x707, &(0x7f0000000a40)={&(0x7f0000000140)=[{0x18, 0x4000, 0x0, 0x0}], 0x1})

program did not crash
testing program (duration=45.44997994s, {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$I2C-ioctl$I2C_RDWR
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB], 0x0)
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_RDWR(r0, 0x707, &(0x7f0000000a40)={&(0x7f0000000140)=[{0x18, 0x4000, 0x0, 0x0}], 0x1})

program did not crash
testing program (duration=45.44997994s, {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$I2C-ioctl$I2C_RDWR
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
r0 = syz_open_dev$I2C(0x0, 0x1, 0x402)
ioctl$I2C_RDWR(r0, 0x707, &(0x7f0000000a40)={&(0x7f0000000140)=[{0x18, 0x4000, 0x0, 0x0}], 0x1})

program did not crash
testing program (duration=45.44997994s, {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$I2C-ioctl$I2C_RDWR
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_RDWR(r0, 0x707, 0x0)

program did not crash
testing program (duration=45.44997994s, {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$I2C-ioctl$I2C_RDWR
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_RDWR(r0, 0x707, &(0x7f0000000a40)={0x0})

program did not crash
extracting C reproducer
testing compiled C program (duration=45.44997994s, {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$I2C-ioctl$I2C_RDWR
program crashed: general protection fault in dvb_usbv2_generic_write
simplifying C reproducer
testing compiled C program (duration=45.44997994s, {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_open_dev$I2C-ioctl$I2C_RDWR
program crashed: general protection fault in dvb_usbv2_generic_write
testing compiled C program (duration=45.44997994s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$I2C-ioctl$I2C_RDWR
program did not crash
testing compiled C program (duration=45.44997994s, {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_open_dev$I2C-ioctl$I2C_RDWR
program did not crash
testing compiled C program (duration=45.44997994s, {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_open_dev$I2C-ioctl$I2C_RDWR
program crashed: general protection fault in dvb_usbv2_generic_write
testing compiled C program (duration=45.44997994s, {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_open_dev$I2C-ioctl$I2C_RDWR
program crashed: general protection fault in dvb_usbv2_generic_write
testing compiled C program (duration=45.44997994s, {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_open_dev$I2C-ioctl$I2C_RDWR
program crashed: general protection fault in dvb_usbv2_generic_write
testing compiled C program (duration=45.44997994s, {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_open_dev$I2C-ioctl$I2C_RDWR
program crashed: general protection fault in dvb_usbv2_generic_write
testing compiled C program (duration=45.44997994s, {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_open_dev$I2C-ioctl$I2C_RDWR
program crashed: general protection fault in dvb_usbv2_generic_write
testing program (duration=45.44997994s, {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_open_dev$I2C-ioctl$I2C_RDWR
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_RDWR(r0, 0x707, &(0x7f0000000a40)={&(0x7f0000000140)=[{0x18, 0x4000, 0x0, 0x0}], 0x1})

program crashed: general protection fault in dvb_usbv2_generic_write
validation run: crashed=true
testing program (duration=45.44997994s, {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_open_dev$I2C-ioctl$I2C_RDWR
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_RDWR(r0, 0x707, &(0x7f0000000a40)={&(0x7f0000000140)=[{0x18, 0x4000, 0x0, 0x0}], 0x1})

program crashed: general protection fault in dvb_usbv2_generic_write
validation run: crashed=true
testing program (duration=45.44997994s, {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_open_dev$I2C-ioctl$I2C_RDWR
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_RDWR(r0, 0x707, &(0x7f0000000a40)={&(0x7f0000000140)=[{0x18, 0x4000, 0x0, 0x0}], 0x1})

program crashed: general protection fault in dvb_usbv2_generic_write
validation run: crashed=true
reproducing took 30m19.861544482s
repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf]
CPU: 0 UID: 0 PID: 6059 Comm: syz.3.20 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:593 [inline]
RIP: 0010:__mutex_lock+0x13b/0x1350 kernel/locking/mutex.c:776
Code: 20 94 cf 99 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 25 10 00 00 83 3d e3 dc 66 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 89 e9 bf f6 4d 39 64 24 60 0f 85 51 0f 00
RSP: 0018:ffffc9000215f300 EFLAGS: 00010202
RAX: 0000000000000019 RBX: ffffc9000215f3e0 RCX: ffffffff99cf9403
RDX: ffff88802f1d1e80 RSI: ffffffff8dc93c7b RDI: 00000000000000c8
RBP: ffffc9000215f4b8 R08: ffffc9000215f427 R09: 0000000000000000
R10: ffffc9000215f400 R11: fffff5200042be85 R12: 0000000000000068
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055558d0b2500(0000) GS:ffff8881259dc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30d63fff CR3: 000000002fcf8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dvb_usbv2_generic_write+0x26/0x60 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77
 mxl111sf_ctrl_msg+0x160/0x2f0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73
 mxl111sf_write_reg+0xa6/0x1c0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:123
 mxl111sf_i2c_start drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:130 [inline]
 mxl111sf_i2c_sw_xfer_msg drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:-1 [inline]
 mxl111sf_i2c_xfer+0x461/0x4f00 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813
 __i2c_transfer+0x871/0x2110 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x25b/0x3a0 drivers/i2c/i2c-core-base.c:2317
 i2cdev_ioctl_rdwr+0x460/0x740 drivers/i2c/i2c-dev.c:306
 i2cdev_ioctl+0x64b/0x820 drivers/i2c/i2c-dev.c:467
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3693b8f749
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:00007ffd331e9848 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3693de5fa0 RCX: 00007f3693b8f749
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f3693c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3693de5fa0 R14: 00007f3693de5fa0 R15: 0000000000000003
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:593 [inline]
RIP: 0010:__mutex_lock+0x13b/0x1350 kernel/locking/mutex.c:776
Code: 20 94 cf 99 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 25 10 00 00 83 3d e3 dc 66 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 89 e9 bf f6 4d 39 64 24 60 0f 85 51 0f 00
RSP: 0018:ffffc9000215f300 EFLAGS: 00010202
RAX: 0000000000000019 RBX: ffffc9000215f3e0 RCX: ffffffff99cf9403
RDX: ffff88802f1d1e80 RSI: ffffffff8dc93c7b RDI: 00000000000000c8
RBP: ffffc9000215f4b8 R08: ffffc9000215f427 R09: 0000000000000000
R10: ffffc9000215f400 R11: fffff5200042be85 R12: 0000000000000068
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055558d0b2500(0000) GS:ffff888125adc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd6cc30db4 CR3: 000000002fcf8000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	20 94 cf 99 48 c1 e8 	and    %dl,-0x173eb767(%rdi,%rcx,8)
   7:	03 42 0f             	add    0xf(%rdx),%eax
   a:	b6 04                	mov    $0x4,%dh
   c:	28 84 c0 0f 85 25 10 	sub    %al,0x1025850f(%rax,%rax,8)
  13:	00 00                	add    %al,(%rax)
  15:	83 3d e3 dc 66 0e 00 	cmpl   $0x0,0xe66dce3(%rip)        # 0xe66dcff
  1c:	75 23                	jne    0x41
  1e:	49 8d 7c 24 60       	lea    0x60(%r12),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 89 e9 bf f6       	call   0xf6bfe9bf
  36:	4d 39 64 24 60       	cmp    %r12,0x60(%r12)
  3b:	0f                   	.byte 0xf
  3c:	85 51 0f             	test   %edx,0xf(%rcx)

final repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf]
CPU: 0 UID: 0 PID: 6059 Comm: syz.3.20 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:593 [inline]
RIP: 0010:__mutex_lock+0x13b/0x1350 kernel/locking/mutex.c:776
Code: 20 94 cf 99 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 25 10 00 00 83 3d e3 dc 66 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 89 e9 bf f6 4d 39 64 24 60 0f 85 51 0f 00
RSP: 0018:ffffc9000215f300 EFLAGS: 00010202
RAX: 0000000000000019 RBX: ffffc9000215f3e0 RCX: ffffffff99cf9403
RDX: ffff88802f1d1e80 RSI: ffffffff8dc93c7b RDI: 00000000000000c8
RBP: ffffc9000215f4b8 R08: ffffc9000215f427 R09: 0000000000000000
R10: ffffc9000215f400 R11: fffff5200042be85 R12: 0000000000000068
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055558d0b2500(0000) GS:ffff8881259dc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30d63fff CR3: 000000002fcf8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dvb_usbv2_generic_write+0x26/0x60 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77
 mxl111sf_ctrl_msg+0x160/0x2f0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73
 mxl111sf_write_reg+0xa6/0x1c0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:123
 mxl111sf_i2c_start drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:130 [inline]
 mxl111sf_i2c_sw_xfer_msg drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:-1 [inline]
 mxl111sf_i2c_xfer+0x461/0x4f00 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813
 __i2c_transfer+0x871/0x2110 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x25b/0x3a0 drivers/i2c/i2c-core-base.c:2317
 i2cdev_ioctl_rdwr+0x460/0x740 drivers/i2c/i2c-dev.c:306
 i2cdev_ioctl+0x64b/0x820 drivers/i2c/i2c-dev.c:467
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3693b8f749
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:00007ffd331e9848 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3693de5fa0 RCX: 00007f3693b8f749
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f3693c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3693de5fa0 R14: 00007f3693de5fa0 R15: 0000000000000003
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:593 [inline]
RIP: 0010:__mutex_lock+0x13b/0x1350 kernel/locking/mutex.c:776
Code: 20 94 cf 99 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 25 10 00 00 83 3d e3 dc 66 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 89 e9 bf f6 4d 39 64 24 60 0f 85 51 0f 00
RSP: 0018:ffffc9000215f300 EFLAGS: 00010202
RAX: 0000000000000019 RBX: ffffc9000215f3e0 RCX: ffffffff99cf9403
RDX: ffff88802f1d1e80 RSI: ffffffff8dc93c7b RDI: 00000000000000c8
RBP: ffffc9000215f4b8 R08: ffffc9000215f427 R09: 0000000000000000
R10: ffffc9000215f400 R11: fffff5200042be85 R12: 0000000000000068
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055558d0b2500(0000) GS:ffff888125adc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd6cc30db4 CR3: 000000002fcf8000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	20 94 cf 99 48 c1 e8 	and    %dl,-0x173eb767(%rdi,%rcx,8)
   7:	03 42 0f             	add    0xf(%rdx),%eax
   a:	b6 04                	mov    $0x4,%dh
   c:	28 84 c0 0f 85 25 10 	sub    %al,0x1025850f(%rax,%rax,8)
  13:	00 00                	add    %al,(%rax)
  15:	83 3d e3 dc 66 0e 00 	cmpl   $0x0,0xe66dce3(%rip)        # 0xe66dcff
  1c:	75 23                	jne    0x41
  1e:	49 8d 7c 24 60       	lea    0x60(%r12),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 89 e9 bf f6       	call   0xf6bfe9bf
  36:	4d 39 64 24 60       	cmp    %r12,0x60(%r12)
  3b:	0f                   	.byte 0xf
  3c:	85 51 0f             	test   %edx,0xf(%rcx)