pvrusb2: ***WARNING*** Detected a wedged cx25840 chip; the device will not work.
pvrusb2: ***WARNING*** Try power cycling the pvrusb2 device.
pvrusb2: ***WARNING*** Disabling further access to the device to prevent other foul-ups.
pvrusb2: Device being rendered inoperable
=====================================================
BUG: KMSAN: uninit-value in irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 include/linux/irq-entry-common.h:464
 irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 include/linux/irq-entry-common.h:464
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x82/0xa00 kernel/entry/common.c:164
 sysvec_call_function_single+0x4f/0x90 arch/x86/kernel/smp.c:267
 asm_sysvec_call_function_single+0x1f/0x30 arch/x86/include/asm/idtentry.h:704
 kmsan_get_metadata+0x12e/0x160 mm/kmsan/shadow.c:148
 kmsan_internal_set_shadow_origin+0x38/0x110 mm/kmsan/core.c:200
 __msan_poison_alloca+0x14f/0x1a0 mm/kmsan/instrumentation.c:289
 _printk+0xd8/0x1b0 kernel/printk/printk.c:2500
 get_cx2388x_ident drivers/media/i2c/cx25840/cx25840-core.c:3772 [inline]
 cx25840_probe+0x1037/0x4370 drivers/media/i2c/cx25840/cx25840-core.c:3813
 i2c_device_probe+0x1209/0x14b0 drivers/i2c/i2c-core-base.c:591
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x4d5/0xe40 drivers/base/dd.c:709
 __driver_probe_device+0x2fb/0x410 drivers/base/dd.c:871
 driver_probe_device+0x70/0x8f0 drivers/base/dd.c:901
 __device_attach_driver+0x4ee/0x950 drivers/base/dd.c:1029
 bus_for_each_drv+0x3e3/0x680 drivers/base/bus.c:500
 __device_attach+0x3c5/0x5f0 drivers/base/dd.c:1101
 device_initial_probe+0x126/0x170 drivers/base/dd.c:1156
 bus_probe_device+0x287/0x530 drivers/base/bus.c:613
 device_add+0x12e3/0x1c90 drivers/base/core.c:3706
 device_register+0x36/0x40 drivers/base/core.c:3788
 i2c_new_client_device+0x18cd/0x20e0 drivers/i2c/i2c-core-base.c:1018
 v4l2_i2c_new_subdev_board+0x13e/0x520 drivers/media/v4l2-core/v4l2-i2c.c:81
 v4l2_i2c_new_subdev+0x1f7/0x2c0 drivers/media/v4l2-core/v4l2-i2c.c:136
 pvr2_hdw_load_subdev drivers/media/usb/pvrusb2/pvrusb2-hdw.c:-1 [inline]
 pvr2_hdw_load_modules drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2074 [inline]
 pvr2_hdw_setup_low drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2155 [inline]
 pvr2_hdw_setup drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2261 [inline]
 pvr2_hdw_initialize+0x1830/0x5480 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2338
 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:111 [inline]
 pvr2_context_thread_func+0x5f5/0x1400 drivers/media/usb/pvrusb2/pvrusb2-context.c:158
 kthread+0x53a/0x5f0 kernel/kthread.c:436
 ret_from_fork+0x20f/0x8d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Local variable rx_buf.i45.i created at:
 cx25840_read4 drivers/media/i2c/cx25840/cx25840-core.c:127 [inline]
 get_cx2388x_ident drivers/media/i2c/cx25840/cx25840-core.c:3768 [inline]
 cx25840_probe+0xb6d/0x4370 drivers/media/i2c/cx25840/cx25840-core.c:3813
 i2c_device_probe+0x1209/0x14b0 drivers/i2c/i2c-core-base.c:591

CPU: 0 UID: 0 PID: 2353 Comm: pvrusb2-context Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
=====================================================