dvb-usb: bulk message failed: -22 (3/0) ===================================================== 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+0xd/0x160 mm/kmsan/shadow.c:125 kmsan_get_shadow_origin_ptr+0x35/0xb0 mm/kmsan/shadow.c:97 get_shadow_origin_ptr mm/kmsan/instrumentation.c:38 [inline] __msan_metadata_ptr_for_store_1+0x27/0x40 mm/kmsan/instrumentation.c:91 cxusb_gpio_tuner drivers/media/usb/dvb-usb/cxusb.c:127 [inline] cxusb_i2c_xfer+0x7aa/0x1a50 drivers/media/usb/dvb-usb/cxusb.c:-1 __i2c_transfer+0xec4/0x31c0 drivers/i2c/i2c-core-base.c:-1 i2c_transfer+0x2bb/0x460 drivers/i2c/i2c-core-base.c:2316 i2c_transfer_buffer_flags+0x138/0x200 drivers/i2c/i2c-core-base.c:2344 i2c_master_recv include/linux/i2c.h:79 [inline] i2cdev_read+0x1b2/0x3c0 drivers/i2c/i2c-dev.c:155 do_loop_readv_writev fs/read_write.c:849 [inline] vfs_readv+0x931/0xf30 fs/read_write.c:1022 do_readv+0x235/0x5d0 fs/read_write.c:1082 __do_sys_readv fs/read_write.c:1167 [inline] __se_sys_readv fs/read_write.c:1164 [inline] __x64_sys_readv+0x99/0xf0 fs/read_write.c:1164 x64_sys_call+0x2fb4/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:20 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15d/0x3c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable i.i618 created at: cxusb_gpio_tuner drivers/media/usb/dvb-usb/cxusb.c:114 [inline] cxusb_i2c_xfer+0x30d/0x1a50 drivers/media/usb/dvb-usb/cxusb.c:195 __i2c_transfer+0xec4/0x31c0 drivers/i2c/i2c-core-base.c:-1 CPU: 0 UID: 0 PID: 9253 Comm: syz.4.1259 Tainted: G L syzkaller #0 PREEMPT(lazy) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 =====================================================