===================================================== BUG: KMSAN: uninit-value in alauda_check_media+0x2f9/0x30e0 drivers/usb/storage/alauda.c:460 CPU: 0 PID: 8225 Comm: usb-storage Not tainted 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:121 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 alauda_check_media+0x2f9/0x30e0 drivers/usb/storage/alauda.c:460 alauda_transport+0x18a/0x5af0 drivers/usb/storage/alauda.c:1137 usb_stor_invoke_transport+0xe3/0x2ab0 drivers/usb/storage/transport.c:611 usb_stor_transparent_scsi_command+0x5d/0x70 drivers/usb/storage/protocol.c:108 usb_stor_control_thread+0x7b7/0xff0 drivers/usb/storage/usb.c:380 kthread+0x521/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Local variable ----status@alauda_check_media created at: alauda_check_media+0x83/0x30e0 drivers/usb/storage/alauda.c:455 alauda_check_media+0x83/0x30e0 drivers/usb/storage/alauda.c:455 ===================================================== Kernel panic - not syncing: panic_on_kmsan set ... CPU: 0 PID: 8225 Comm: usb-storage Tainted: G B 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 panic+0x4c6/0xea7 kernel/panic.c:231 kmsan_report+0x1de/0x1e0 mm/kmsan/kmsan_report.c:144 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 alauda_check_media+0x2f9/0x30e0 drivers/usb/storage/alauda.c:460 alauda_transport+0x18a/0x5af0 drivers/usb/storage/alauda.c:1137 usb_stor_invoke_transport+0xe3/0x2ab0 drivers/usb/storage/transport.c:611 usb_stor_transparent_scsi_command+0x5d/0x70 drivers/usb/storage/protocol.c:108 usb_stor_control_thread+0x7b7/0xff0 drivers/usb/storage/usb.c:380 kthread+0x521/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Kernel Offset: disabled Rebooting in 86400 seconds..