usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 ================================================================== BUG: KCSAN: data-race in data_push_tail / number write to 0xffffffff88f050b9 of 1 bytes by interrupt on cpu 0: number+0x3db/0xb50 lib/vsprintf.c:494 vsnprintf+0xb6d/0xed0 lib/vsprintf.c:2717 va_format lib/vsprintf.c:1663 [inline] pointer+0xeb/0x800 lib/vsprintf.c:2283 vsnprintf+0x8a1/0xed0 lib/vsprintf.c:2655 vscnprintf+0x29/0x80 lib/vsprintf.c:2754 printk_sprint kernel/printk/printk.c:1936 [inline] vprintk_store+0x4c1/0x9c0 kernel/printk/printk.c:2039 vprintk_emit+0xca/0x3e0 kernel/printk/printk.c:2081 dev_vprintk_emit+0x1c6/0x1ea drivers/base/core.c:4434 dev_printk_emit+0x6a/0x8c drivers/base/core.c:4445 __dev_printk+0xfa/0x103 drivers/base/core.c:4457 _dev_err+0x76/0x96 drivers/base/core.c:4500 usbtmc_interrupt+0x206/0x350 drivers/usb/class/usbtmc.c:2337 __usb_hcd_giveback_urb+0x244/0x2e0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0xae/0x200 drivers/usb/core/hcd.c:1726 dummy_timer+0x513/0x24a0 drivers/usb/gadget/udc/dummy_hcd.c:1971 call_timer_fn+0x2e/0x240 kernel/time/timer.c:1431 expire_timers+0x116/0x260 kernel/time/timer.c:1476 __run_timers+0x358/0x3f0 kernel/time/timer.c:1745 run_timer_softirq+0x19/0x30 kernel/time/timer.c:1758 __do_softirq+0x13c/0x2c3 kernel/softirq.c:345 invoke_softirq kernel/softirq.c:221 [inline] __irq_exit_rcu+0xb4/0xc0 kernel/softirq.c:422 sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632 smap_restore arch/x86/include/asm/smap.h:70 [inline] kcsan_setup_watchpoint+0x436/0x470 kernel/kcsan/core.c:590 tomoyo_domain_quota_is_ok+0x79/0x2f0 security/tomoyo/util.c:1059 tomoyo_supervisor+0x1f4/0xb40 security/tomoyo/common.c:2089 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission security/tomoyo/file.c:587 [inline] tomoyo_path_perm+0x261/0x330 security/tomoyo/file.c:838 tomoyo_inode_getattr+0x18/0x20 security/tomoyo/tomoyo.c:123 security_inode_getattr+0x7f/0xd0 security/security.c:1288 vfs_getattr fs/stat.c:131 [inline] vfs_fstat fs/stat.c:156 [inline] __do_sys_newfstat fs/stat.c:396 [inline] __se_sys_newfstat+0x58/0x2c0 fs/stat.c:393 __x64_sys_newfstat+0x2d/0x40 fs/stat.c:393 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffffffff88f050b8 of 8 bytes by interrupt on cpu 1: data_make_reusable kernel/printk/printk_ringbuffer.c:587 [inline] data_push_tail+0x125/0x460 kernel/printk/printk_ringbuffer.c:672 data_alloc+0xbc/0x2b0 kernel/printk/printk_ringbuffer.c:1043 prb_reserve+0x8f0/0xbc0 kernel/printk/printk_ringbuffer.c:1549 vprintk_store+0x3e9/0x9c0 kernel/printk/printk.c:2029 vprintk_emit+0xca/0x3e0 kernel/printk/printk.c:2081 dev_vprintk_emit+0x1c6/0x1ea drivers/base/core.c:4434 dev_printk_emit+0x6a/0x8c drivers/base/core.c:4445 __dev_printk+0xfa/0x103 drivers/base/core.c:4457 _dev_err+0x76/0x96 drivers/base/core.c:4500 usbtmc_interrupt+0x206/0x350 drivers/usb/class/usbtmc.c:2337 __usb_hcd_giveback_urb+0x244/0x2e0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0xae/0x200 drivers/usb/core/hcd.c:1726 dummy_timer+0x513/0x24a0 drivers/usb/gadget/udc/dummy_hcd.c:1971 call_timer_fn+0x2e/0x240 kernel/time/timer.c:1431 expire_timers+0x116/0x260 kernel/time/timer.c:1476 __run_timers+0x358/0x3f0 kernel/time/timer.c:1745 run_timer_softirq+0x19/0x30 kernel/time/timer.c:1758 __do_softirq+0x13c/0x2c3 kernel/softirq.c:345 invoke_softirq kernel/softirq.c:221 [inline] __irq_exit_rcu+0xb4/0xc0 kernel/softirq.c:422 sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline] acpi_idle_do_entry drivers/acpi/processor_idle.c:516 [inline] acpi_idle_enter+0x25b/0x2e0 drivers/acpi/processor_idle.c:647 cpuidle_enter_state+0x2b6/0x7c0 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x193/0x230 kernel/sched/idle.c:300 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:397 secondary_startup_64_no_verify+0xb0/0xbb Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: unknown status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 6-1:0.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71