Extracting prog: 2m13.470926988s
Minimizing prog: 11m5.418130407s
Simplifying prog options: 0s
Extracting C: 58.059419989s
Simplifying C: 10m53.012976901s
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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_SMBUS(r0, 0x720, &(0x7f00000001c0)={0x1, 0x23, 0x4, &(0x7f0000000040)={0x21, "925aa8dac7e1b89d67d3c56c7f51a46081a3cfa1fc5c965efd90694e22f8e24d9a"}})
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
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=45.911505919s, {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_SMBUS
detailed listing:
executing program 0:
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_SMBUS(r0, 0x720, &(0x7f00000001c0)={0x1, 0x23, 0x4, &(0x7f0000000040)={0x21, "925aa8dac7e1b89d67d3c56c7f51a46081a3cfa1fc5c965efd90694e22f8e24d9a"}})
program did not crash
testing program (duration=45.911505919s, {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$I2C-syz_usb_connect
detailed listing:
executing program 0:
syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
program did not crash
testing program (duration=45.911505919s, {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}}): ioctl$I2C_SMBUS-syz_usb_connect
detailed listing:
executing program 0:
ioctl$I2C_SMBUS(0xffffffffffffffff, 0x720, &(0x7f00000001c0)={0x1, 0x23, 0x4, &(0x7f0000000040)={0x21, "925aa8dac7e1b89d67d3c56c7f51a46081a3cfa1fc5c965efd90694e22f8e24d9a"}})
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
program did not crash
testing program (duration=45.911505919s, {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_SMBUS-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$I2C(0x0, 0x1, 0x402)
ioctl$I2C_SMBUS(r0, 0x720, &(0x7f00000001c0)={0x1, 0x23, 0x4, &(0x7f0000000040)={0x21, "925aa8dac7e1b89d67d3c56c7f51a46081a3cfa1fc5c965efd90694e22f8e24d9a"}})
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
program did not crash
testing program (duration=45.911505919s, {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_SMBUS-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_SMBUS(r0, 0x720, 0x0)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
program did not crash
testing program (duration=45.911505919s, {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_SMBUS-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_SMBUS(r0, 0x720, &(0x7f00000001c0)={0x1, 0x23, 0x4, 0x0})
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
program did not crash
testing program (duration=45.911505919s, {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_SMBUS-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_SMBUS(r0, 0x720, &(0x7f00000001c0)={0x1, 0x23, 0x4, &(0x7f0000000040)={0x21, "925aa8dac7e1b89d67d3c56c7f51a46081a3cfa1fc5c965efd90694e22f8e24d9a"}})
syz_usb_connect(0x0, 0x24, 0x0, 0x0)
program did not crash
testing program (duration=45.911505919s, {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_SMBUS-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_SMBUS(r0, 0x720, &(0x7f00000001c0)={0x1, 0x23, 0x4, &(0x7f0000000040)={0x21, "925aa8dac7e1b89d67d3c56c7f51a46081a3cfa1fc5c965efd90694e22f8e24d9a"}})
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB], 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=45.911505919s, {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_SMBUS-syz_usb_connect
program crashed: general protection fault in dvb_usbv2_generic_write
simplifying C reproducer
testing compiled C program (duration=45.911505919s, {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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
program crashed: general protection fault in dvb_usbv2_generic_write
testing compiled C program (duration=45.911505919s, {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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
program did not crash
testing compiled C program (duration=45.911505919s, {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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
program did not crash
testing compiled C program (duration=45.911505919s, {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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
program crashed: general protection fault in dvb_usbv2_generic_write
testing compiled C program (duration=45.911505919s, {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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
program crashed: general protection fault in dvb_usbv2_generic_write
testing compiled C program (duration=45.911505919s, {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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
program crashed: general protection fault in dvb_usbv2_generic_write
testing compiled C program (duration=45.911505919s, {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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
program crashed: general protection fault in dvb_usbv2_generic_write
testing compiled C program (duration=45.911505919s, {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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
program crashed: general protection fault in dvb_usbv2_generic_write
testing program (duration=45.911505919s, {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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_SMBUS(r0, 0x720, &(0x7f00000001c0)={0x1, 0x23, 0x4, &(0x7f0000000040)={0x21, "925aa8dac7e1b89d67d3c56c7f51a46081a3cfa1fc5c965efd90694e22f8e24d9a"}})
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
program crashed: general protection fault in dvb_usbv2_generic_write
validation run: crashed=true
testing program (duration=45.911505919s, {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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_SMBUS(r0, 0x720, &(0x7f00000001c0)={0x1, 0x23, 0x4, &(0x7f0000000040)={0x21, "925aa8dac7e1b89d67d3c56c7f51a46081a3cfa1fc5c965efd90694e22f8e24d9a"}})
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
program crashed: general protection fault in dvb_usbv2_generic_write
validation run: crashed=true
testing program (duration=45.911505919s, {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_open_dev$I2C-ioctl$I2C_SMBUS-syz_usb_connect
detailed listing:
executing program 0:
r0 = syz_open_dev$I2C(&(0x7f0000000000), 0x1, 0x402)
ioctl$I2C_SMBUS(r0, 0x720, &(0x7f00000001c0)={0x1, 0x23, 0x4, &(0x7f0000000040)={0x21, "925aa8dac7e1b89d67d3c56c7f51a46081a3cfa1fc5c965efd90694e22f8e24d9a"}})
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000034276d20402003c68e010000000109021200010000000009040001"], 0x0)
program crashed: general protection fault in dvb_usbv2_generic_write
validation run: crashed=true
reproducing took 29m0.549549438s
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: 6114 Comm: syz.2.41 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:577 [inline]
RIP: 0010:__mutex_lock+0x13b/0x1350 kernel/locking/mutex.c:760
Code: 80 83 9f 99 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 2b 10 00 00 83 3d 43 f5 4b 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 a9 b5 d2 f6 4d 39 64 24 60 0f 85 51 0f 00
RSP: 0018:ffffc90002eb7060 EFLAGS: 00010202
RAX: 0000000000000019 RBX: ffffc90002eb7140 RCX: ffffffff999f8303
RDX: ffff88802db45ac0 RSI: ffffffff8da5a7b8 RDI: 00000000000000c8
RBP: ffffc90002eb7218 R08: ffffc90002eb7187 R09: 0000000000000000
R10: ffffc90002eb7160 R11: fffff520005d6e31 R12: 0000000000000068
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 000055558aa80500(0000) GS:ffff888125cdc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30963fff CR3: 000000002e866000 CR4: 00000000003526f0
Call Trace:
dvb_usbv2_generic_write+0x26/0x60 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77
mxl111sf_ctrl_msg+0x16a/0x2e0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73
mxl111sf_write_reg+0xa0/0x180 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+0x461/0x4f00 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813
__i2c_transfer+0x874/0x2170 drivers/i2c/i2c-core-base.c:-1
i2c_smbus_xfer_emulated drivers/i2c/i2c-core-smbus.c:470 [inline]
__i2c_smbus_xfer+0xfb0/0x1e50 drivers/i2c/i2c-core-smbus.c:608
i2c_smbus_xfer+0x275/0x3c0 drivers/i2c/i2c-core-smbus.c:546
i2cdev_ioctl_smbus+0x43d/0x6d0 drivers/i2c/i2c-dev.c:389
i2cdev_ioctl+0x5d3/0x7f0 drivers/i2c/i2c-dev.c:478
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/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa85638efc9
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:00007ffd5558db58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa8565e5fa0 RCX: 00007fa85638efc9
RDX: 00002000000001c0 RSI: 0000000000000720 RDI: 0000000000000003
RBP: 00007fa856411f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa8565e5fa0 R14: 00007fa8565e5fa0 R15: 0000000000000003
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:577 [inline]
RIP: 0010:__mutex_lock+0x13b/0x1350 kernel/locking/mutex.c:760
Code: 80 83 9f 99 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 2b 10 00 00 83 3d 43 f5 4b 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 a9 b5 d2 f6 4d 39 64 24 60 0f 85 51 0f 00
RSP: 0018:ffffc90002eb7060 EFLAGS: 00010202
RAX: 0000000000000019 RBX: ffffc90002eb7140 RCX: ffffffff999f8303
RDX: ffff88802db45ac0 RSI: ffffffff8da5a7b8 RDI: 00000000000000c8
RBP: ffffc90002eb7218 R08: ffffc90002eb7187 R09: 0000000000000000
R10: ffffc90002eb7160 R11: fffff520005d6e31 R12: 0000000000000068
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 000055558aa80500(0000) GS:ffff888125ddc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c008629000 CR3: 000000002e866000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 80 83 9f 99 48 c1 e8 addb $0xe8,-0x3eb76661(%rbx)
7: 03 42 0f add 0xf(%rdx),%eax
a: b6 04 mov $0x4,%dh
c: 28 84 c0 0f 85 2b 10 sub %al,0x102b850f(%rax,%rax,8)
13: 00 00 add %al,(%rax)
15: 83 3d 43 f5 4b 0e 00 cmpl $0x0,0xe4bf543(%rip) # 0xe4bf55f
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 a9 b5 d2 f6 call 0xf6d2b5df
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: 6114 Comm: syz.2.41 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:577 [inline]
RIP: 0010:__mutex_lock+0x13b/0x1350 kernel/locking/mutex.c:760
Code: 80 83 9f 99 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 2b 10 00 00 83 3d 43 f5 4b 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 a9 b5 d2 f6 4d 39 64 24 60 0f 85 51 0f 00
RSP: 0018:ffffc90002eb7060 EFLAGS: 00010202
RAX: 0000000000000019 RBX: ffffc90002eb7140 RCX: ffffffff999f8303
RDX: ffff88802db45ac0 RSI: ffffffff8da5a7b8 RDI: 00000000000000c8
RBP: ffffc90002eb7218 R08: ffffc90002eb7187 R09: 0000000000000000
R10: ffffc90002eb7160 R11: fffff520005d6e31 R12: 0000000000000068
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 000055558aa80500(0000) GS:ffff888125cdc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30963fff CR3: 000000002e866000 CR4: 00000000003526f0
Call Trace:
dvb_usbv2_generic_write+0x26/0x60 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77
mxl111sf_ctrl_msg+0x16a/0x2e0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73
mxl111sf_write_reg+0xa0/0x180 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+0x461/0x4f00 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813
__i2c_transfer+0x874/0x2170 drivers/i2c/i2c-core-base.c:-1
i2c_smbus_xfer_emulated drivers/i2c/i2c-core-smbus.c:470 [inline]
__i2c_smbus_xfer+0xfb0/0x1e50 drivers/i2c/i2c-core-smbus.c:608
i2c_smbus_xfer+0x275/0x3c0 drivers/i2c/i2c-core-smbus.c:546
i2cdev_ioctl_smbus+0x43d/0x6d0 drivers/i2c/i2c-dev.c:389
i2cdev_ioctl+0x5d3/0x7f0 drivers/i2c/i2c-dev.c:478
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/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa85638efc9
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:00007ffd5558db58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa8565e5fa0 RCX: 00007fa85638efc9
RDX: 00002000000001c0 RSI: 0000000000000720 RDI: 0000000000000003
RBP: 00007fa856411f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa8565e5fa0 R14: 00007fa8565e5fa0 R15: 0000000000000003
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:577 [inline]
RIP: 0010:__mutex_lock+0x13b/0x1350 kernel/locking/mutex.c:760
Code: 80 83 9f 99 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 2b 10 00 00 83 3d 43 f5 4b 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 a9 b5 d2 f6 4d 39 64 24 60 0f 85 51 0f 00
RSP: 0018:ffffc90002eb7060 EFLAGS: 00010202
RAX: 0000000000000019 RBX: ffffc90002eb7140 RCX: ffffffff999f8303
RDX: ffff88802db45ac0 RSI: ffffffff8da5a7b8 RDI: 00000000000000c8
RBP: ffffc90002eb7218 R08: ffffc90002eb7187 R09: 0000000000000000
R10: ffffc90002eb7160 R11: fffff520005d6e31 R12: 0000000000000068
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 000055558aa80500(0000) GS:ffff888125ddc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c008629000 CR3: 000000002e866000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 80 83 9f 99 48 c1 e8 addb $0xe8,-0x3eb76661(%rbx)
7: 03 42 0f add 0xf(%rdx),%eax
a: b6 04 mov $0x4,%dh
c: 28 84 c0 0f 85 2b 10 sub %al,0x102b850f(%rax,%rax,8)
13: 00 00 add %al,(%rax)
15: 83 3d 43 f5 4b 0e 00 cmpl $0x0,0xe4bf543(%rip) # 0xe4bf55f
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 a9 b5 d2 f6 call 0xf6d2b5df
36: 4d 39 64 24 60 cmp %r12,0x60(%r12)
3b: 0f .byte 0xf
3c: 85 51 0f test %edx,0xf(%rcx)