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Some thread flags can be set remotely, and so even when IRQs are disabled, the flags can change under our feet. Generally this is unlikely to cause a problem in practice, but it is somewhat unsound, and KCSAN will legitimately warn that there is a data race. To avoid such issues, a snapshot of the flags has to be taken prior to using them. Some places already use READ_ONCE() for that, others do not. Convert them all to the new flag accessor helpers. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Stafford Horne <shorne@gmail.com> Acked-by: Paul E. McKenney <paulmck@kernel.org> Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Link: https://lore.kernel.org/r/20211129130653.2037928-9-mark.rutland@arm.com |
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| .gitignore | ||
| asm-offsets.c | ||
| dma.c | ||
| entry.S | ||
| head.S | ||
| irq.c | ||
| Makefile | ||
| module.c | ||
| or32_ksyms.c | ||
| process.c | ||
| prom.c | ||
| ptrace.c | ||
| setup.c | ||
| signal.c | ||
| smp.c | ||
| stacktrace.c | ||
| sync-timer.c | ||
| sys_call_table.c | ||
| time.c | ||
| traps.c | ||
| unwinder.c | ||
| vmlinux.h | ||
| vmlinux.lds.S | ||