Extracting prog: 2m11.156956264s
Minimizing prog: 14m21.637426842s
Simplifying prog options: 0s
Extracting C: 34.515967447s
Simplifying C: 11m58.020192086s


extracting reproducer from 52 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: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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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=45.622672306s, {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 33m28.553757678s
repro crashed as (corrupted=false):
general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf]
CPU: 0 PID: 5964 Comm: syz.2.23 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline]
RIP: 0010:__mutex_lock+0xe5/0xcc0 kernel/locking/mutex.c:747
Code: 0f b6 04 30 84 c0 0f 85 da 0a 00 00 83 3d d2 a1 79 0c 00 75 2a 48 8d 7b 60 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 e0 eb 6c f7 48 39 5b 60 0f 85 44 0a 00 00 bf
RSP: 0018:ffffc900035173c0 EFLAGS: 00010202
RAX: 0000000000000019 RBX: 0000000000000068 RCX: dffffc0000000000
RDX: ffff88802ad0bc00 RSI: ffffffff8aaace60 RDI: 00000000000000c8
RBP: ffffc90003517518 R08: ffffffff87064df6 R09: 000000000000001e
R10: dffffc0000000000 R11: ffffed100bcde42c R12: 0000000000000000
R13: 1ffff920006a2e88 R14: dffffc0000000000 R15: 0000000000000000
FS:  00005555743b2500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34763fff CR3: 000000007c789000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 dvb_usbv2_generic_write+0x26/0x50 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77
 mxl111sf_ctrl_msg+0x162/0x2d0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73
 mxl111sf_write_reg+0xa1/0x180 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+0x462/0x4ed0 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813
 __i2c_transfer+0x868/0x2080 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x250/0x390 drivers/i2c/i2c-core-base.c:2328
 i2cdev_ioctl_rdwr+0x3b0/0x690 drivers/i2c/i2c-dev.c:297
 i2cdev_ioctl+0x646/0x7e0 drivers/i2c/i2c-dev.c:458
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7ba778f749
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:00007fff1f937938 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7ba79e5fa0 RCX: 00007f7ba778f749
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f7ba7813f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7ba79e5fa0 R14: 00007f7ba79e5fa0 R15: 0000000000000003
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline]
RIP: 0010:__mutex_lock+0xe5/0xcc0 kernel/locking/mutex.c:747
Code: 0f b6 04 30 84 c0 0f 85 da 0a 00 00 83 3d d2 a1 79 0c 00 75 2a 48 8d 7b 60 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 e0 eb 6c f7 48 39 5b 60 0f 85 44 0a 00 00 bf
RSP: 0018:ffffc900035173c0 EFLAGS: 00010202
RAX: 0000000000000019 RBX: 0000000000000068 RCX: dffffc0000000000
RDX: ffff88802ad0bc00 RSI: ffffffff8aaace60 RDI: 00000000000000c8
RBP: ffffc90003517518 R08: ffffffff87064df6 R09: 000000000000001e
R10: dffffc0000000000 R11: ffffed100bcde42c R12: 0000000000000000
R13: 1ffff920006a2e88 R14: dffffc0000000000 R15: 0000000000000000
FS:  00005555743b2500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6c4e9135c0 CR3: 000000007c789000 CR4: 00000000003506e0
----------------
Code disassembly (best guess):
   0:	0f b6 04 30          	movzbl (%rax,%rsi,1),%eax
   4:	84 c0                	test   %al,%al
   6:	0f 85 da 0a 00 00    	jne    0xae6
   c:	83 3d d2 a1 79 0c 00 	cmpl   $0x0,0xc79a1d2(%rip)        # 0xc79a1e5
  13:	75 2a                	jne    0x3f
  15:	48 8d 7b 60          	lea    0x60(%rbx),%rdi
  19:	48 89 f8             	mov    %rdi,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2e:	74 05                	je     0x35
  30:	e8 e0 eb 6c f7       	call   0xf76cec15
  35:	48 39 5b 60          	cmp    %rbx,0x60(%rbx)
  39:	0f 85 44 0a 00 00    	jne    0xa83
  3f:	bf                   	.byte 0xbf

final repro crashed as (corrupted=false):
general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf]
CPU: 0 PID: 5964 Comm: syz.2.23 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline]
RIP: 0010:__mutex_lock+0xe5/0xcc0 kernel/locking/mutex.c:747
Code: 0f b6 04 30 84 c0 0f 85 da 0a 00 00 83 3d d2 a1 79 0c 00 75 2a 48 8d 7b 60 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 e0 eb 6c f7 48 39 5b 60 0f 85 44 0a 00 00 bf
RSP: 0018:ffffc900035173c0 EFLAGS: 00010202
RAX: 0000000000000019 RBX: 0000000000000068 RCX: dffffc0000000000
RDX: ffff88802ad0bc00 RSI: ffffffff8aaace60 RDI: 00000000000000c8
RBP: ffffc90003517518 R08: ffffffff87064df6 R09: 000000000000001e
R10: dffffc0000000000 R11: ffffed100bcde42c R12: 0000000000000000
R13: 1ffff920006a2e88 R14: dffffc0000000000 R15: 0000000000000000
FS:  00005555743b2500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34763fff CR3: 000000007c789000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 dvb_usbv2_generic_write+0x26/0x50 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77
 mxl111sf_ctrl_msg+0x162/0x2d0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73
 mxl111sf_write_reg+0xa1/0x180 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+0x462/0x4ed0 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813
 __i2c_transfer+0x868/0x2080 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x250/0x390 drivers/i2c/i2c-core-base.c:2328
 i2cdev_ioctl_rdwr+0x3b0/0x690 drivers/i2c/i2c-dev.c:297
 i2cdev_ioctl+0x646/0x7e0 drivers/i2c/i2c-dev.c:458
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7ba778f749
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:00007fff1f937938 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7ba79e5fa0 RCX: 00007f7ba778f749
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f7ba7813f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7ba79e5fa0 R14: 00007f7ba79e5fa0 R15: 0000000000000003
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline]
RIP: 0010:__mutex_lock+0xe5/0xcc0 kernel/locking/mutex.c:747
Code: 0f b6 04 30 84 c0 0f 85 da 0a 00 00 83 3d d2 a1 79 0c 00 75 2a 48 8d 7b 60 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 e0 eb 6c f7 48 39 5b 60 0f 85 44 0a 00 00 bf
RSP: 0018:ffffc900035173c0 EFLAGS: 00010202
RAX: 0000000000000019 RBX: 0000000000000068 RCX: dffffc0000000000
RDX: ffff88802ad0bc00 RSI: ffffffff8aaace60 RDI: 00000000000000c8
RBP: ffffc90003517518 R08: ffffffff87064df6 R09: 000000000000001e
R10: dffffc0000000000 R11: ffffed100bcde42c R12: 0000000000000000
R13: 1ffff920006a2e88 R14: dffffc0000000000 R15: 0000000000000000
FS:  00005555743b2500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6c4e9135c0 CR3: 000000007c789000 CR4: 00000000003506e0
----------------
Code disassembly (best guess):
   0:	0f b6 04 30          	movzbl (%rax,%rsi,1),%eax
   4:	84 c0                	test   %al,%al
   6:	0f 85 da 0a 00 00    	jne    0xae6
   c:	83 3d d2 a1 79 0c 00 	cmpl   $0x0,0xc79a1d2(%rip)        # 0xc79a1e5
  13:	75 2a                	jne    0x3f
  15:	48 8d 7b 60          	lea    0x60(%rbx),%rdi
  19:	48 89 f8             	mov    %rdi,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2e:	74 05                	je     0x35
  30:	e8 e0 eb 6c f7       	call   0xf76cec15
  35:	48 39 5b 60          	cmp    %rbx,0x60(%rbx)
  39:	0f 85 44 0a 00 00    	jne    0xa83
  3f:	bf                   	.byte 0xbf