Extracting prog: 3m10.854540778s
Minimizing prog: 15m14.3421127s
Simplifying prog options: 0s
Extracting C: 35.200157647s
Simplifying C: 12m25.552732734s
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:5 Slowdown:1 Sandbox:namespace 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 did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:namespace 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=1m18.826991834s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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=1m18.826991834s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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=1m18.826991834s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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=1m18.826991834s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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=1m18.826991834s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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=1m18.826991834s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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=1m18.826991834s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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=1m18.826991834s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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=1m18.826991834s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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 35m41.621241622s
repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000018: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7]
CPU: 1 UID: 0 PID: 6004 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline]
RIP: 0010:__mutex_lock+0x149/0x1550 kernel/locking/mutex.c:821
Code: c0 40 a5 9d 9a 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 3f 12 00 00 83 3d 85 46 b8 0e 00 75 22 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <80> 3c 18 00 74 05 e8 bc 25 52 f6 4d 39 64 24 58 0f 85 52 11 00 00
RSP: 0018:ffffc900037a7460 EFLAGS: 00010206
RAX: 0000000000000018 RBX: dffffc0000000000 RCX: ffffffff9a9da503
RDX: 0000000000000000 RSI: ffffffff8e6fc468 RDI: 00000000000000c0
RBP: ffffc900037a75f8 R08: ffffc900037a7567 R09: 0000000000000000
R10: ffffc900037a7540 R11: fffff520006f4ead R12: 0000000000000068
R13: 0000000000000000 R14: 1ffff920006f4ea0 R15: 0000000000000000
FS: 000055556bae9500(0000) GS:ffff888124dda000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff224870050 CR3: 0000000072528000 CR4: 00000000003526f0
Call Trace:
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+0xa9/0x1b0 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+0x463/0x5060 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813
__i2c_transfer+0x7bf/0x1fe0 drivers/i2c/i2c-core-base.c:-1
i2c_transfer+0x1cb/0x2d0 drivers/i2c/i2c-core-base.c:2350
i2cdev_ioctl_rdwr+0x460/0x740 drivers/i2c/i2c-dev.c:306
i2cdev_ioctl+0x6a5/0x880 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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff22499e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd07b2dd58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff224c25fa0 RCX: 00007ff22499e159
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007ff224a35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff224c25fac R14: 00007ff224c25fa0 R15: 00007ff224c25fa0
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline]
RIP: 0010:__mutex_lock+0x149/0x1550 kernel/locking/mutex.c:821
Code: c0 40 a5 9d 9a 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 3f 12 00 00 83 3d 85 46 b8 0e 00 75 22 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <80> 3c 18 00 74 05 e8 bc 25 52 f6 4d 39 64 24 58 0f 85 52 11 00 00
RSP: 0018:ffffc900037a7460 EFLAGS: 00010206
RAX: 0000000000000018 RBX: dffffc0000000000 RCX: ffffffff9a9da503
RDX: 0000000000000000 RSI: ffffffff8e6fc468 RDI: 00000000000000c0
RBP: ffffc900037a75f8 R08: ffffc900037a7567 R09: 0000000000000000
R10: ffffc900037a7540 R11: fffff520006f4ead R12: 0000000000000068
R13: 0000000000000000 R14: 1ffff920006f4ea0 R15: 0000000000000000
FS: 000055556bae9500(0000) GS:ffff888124dda000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055630fadc980 CR3: 0000000072528000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 5 bytes skipped:
0: 48 c1 e8 03 shr $0x3,%rax
4: 0f b6 04 18 movzbl (%rax,%rbx,1),%eax
8: 84 c0 test %al,%al
a: 0f 85 3f 12 00 00 jne 0x124f
10: 83 3d 85 46 b8 0e 00 cmpl $0x0,0xeb84685(%rip) # 0xeb8469c
17: 75 22 jne 0x3b
19: 49 8d 7c 24 58 lea 0x58(%r12),%rdi
1e: 48 89 f8 mov %rdi,%rax
21: 48 c1 e8 03 shr $0x3,%rax
* 25: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) <-- trapping instruction
29: 74 05 je 0x30
2b: e8 bc 25 52 f6 call 0xf65225ec
30: 4d 39 64 24 58 cmp %r12,0x58(%r12)
35: 0f 85 52 11 00 00 jne 0x118d
final repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000018: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7]
CPU: 1 UID: 0 PID: 6004 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline]
RIP: 0010:__mutex_lock+0x149/0x1550 kernel/locking/mutex.c:821
Code: c0 40 a5 9d 9a 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 3f 12 00 00 83 3d 85 46 b8 0e 00 75 22 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <80> 3c 18 00 74 05 e8 bc 25 52 f6 4d 39 64 24 58 0f 85 52 11 00 00
RSP: 0018:ffffc900037a7460 EFLAGS: 00010206
RAX: 0000000000000018 RBX: dffffc0000000000 RCX: ffffffff9a9da503
RDX: 0000000000000000 RSI: ffffffff8e6fc468 RDI: 00000000000000c0
RBP: ffffc900037a75f8 R08: ffffc900037a7567 R09: 0000000000000000
R10: ffffc900037a7540 R11: fffff520006f4ead R12: 0000000000000068
R13: 0000000000000000 R14: 1ffff920006f4ea0 R15: 0000000000000000
FS: 000055556bae9500(0000) GS:ffff888124dda000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff224870050 CR3: 0000000072528000 CR4: 00000000003526f0
Call Trace:
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+0xa9/0x1b0 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+0x463/0x5060 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813
__i2c_transfer+0x7bf/0x1fe0 drivers/i2c/i2c-core-base.c:-1
i2c_transfer+0x1cb/0x2d0 drivers/i2c/i2c-core-base.c:2350
i2cdev_ioctl_rdwr+0x460/0x740 drivers/i2c/i2c-dev.c:306
i2cdev_ioctl+0x6a5/0x880 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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff22499e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd07b2dd58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff224c25fa0 RCX: 00007ff22499e159
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007ff224a35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff224c25fac R14: 00007ff224c25fa0 R15: 00007ff224c25fa0
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline]
RIP: 0010:__mutex_lock+0x149/0x1550 kernel/locking/mutex.c:821
Code: c0 40 a5 9d 9a 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 3f 12 00 00 83 3d 85 46 b8 0e 00 75 22 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <80> 3c 18 00 74 05 e8 bc 25 52 f6 4d 39 64 24 58 0f 85 52 11 00 00
RSP: 0018:ffffc900037a7460 EFLAGS: 00010206
RAX: 0000000000000018 RBX: dffffc0000000000 RCX: ffffffff9a9da503
RDX: 0000000000000000 RSI: ffffffff8e6fc468 RDI: 00000000000000c0
RBP: ffffc900037a75f8 R08: ffffc900037a7567 R09: 0000000000000000
R10: ffffc900037a7540 R11: fffff520006f4ead R12: 0000000000000068
R13: 0000000000000000 R14: 1ffff920006f4ea0 R15: 0000000000000000
FS: 000055556bae9500(0000) GS:ffff888124dda000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055630fadc980 CR3: 0000000072528000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 5 bytes skipped:
0: 48 c1 e8 03 shr $0x3,%rax
4: 0f b6 04 18 movzbl (%rax,%rbx,1),%eax
8: 84 c0 test %al,%al
a: 0f 85 3f 12 00 00 jne 0x124f
10: 83 3d 85 46 b8 0e 00 cmpl $0x0,0xeb84685(%rip) # 0xeb8469c
17: 75 22 jne 0x3b
19: 49 8d 7c 24 58 lea 0x58(%r12),%rdi
1e: 48 89 f8 mov %rdi,%rax
21: 48 c1 e8 03 shr $0x3,%rax
* 25: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) <-- trapping instruction
29: 74 05 je 0x30
2b: e8 bc 25 52 f6 call 0xf65225ec
30: 4d 39 64 24 58 cmp %r12,0x58(%r12)
35: 0f 85 52 11 00 00 jne 0x118d