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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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4fe8713b87
ccount_timer_shutdown is called from the atomic context in the secondary_start_kernel, resulting in the following BUG: BUG: sleeping function called from invalid context in_atomic(): 1, irqs_disabled(): 1, pid: 0, name: swapper/1 Preemption disabled at: secondary_start_kernel+0xa1/0x130 Call Trace: ___might_sleep+0xe7/0xfc __might_sleep+0x41/0x44 synchronize_irq+0x24/0x64 disable_irq+0x11/0x14 ccount_timer_shutdown+0x12/0x20 clockevents_switch_state+0x82/0xb4 clockevents_exchange_device+0x54/0x60 tick_check_new_device+0x46/0x70 clockevents_register_device+0x8c/0xc8 clockevents_config_and_register+0x1d/0x2c local_timer_setup+0x75/0x7c secondary_start_kernel+0xb4/0x130 should_never_return+0x32/0x35 Use disable_irq_nosync instead of disable_irq to avoid it. This is safe because the ccount timer IRQ is per-CPU, and once IRQ is masked the ISR will not be called. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> |
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| .. | ||
| syscalls | ||
| .gitignore | ||
| align.S | ||
| asm-offsets.c | ||
| coprocessor.S | ||
| entry.S | ||
| head.S | ||
| hw_breakpoint.c | ||
| irq.c | ||
| jump_label.c | ||
| Makefile | ||
| mcount.S | ||
| module.c | ||
| mxhead.S | ||
| pci-dma.c | ||
| pci.c | ||
| perf_event.c | ||
| platform.c | ||
| process.c | ||
| ptrace.c | ||
| s32c1i_selftest.c | ||
| setup.c | ||
| signal.c | ||
| smp.c | ||
| stacktrace.c | ||
| syscall.c | ||
| time.c | ||
| traps.c | ||
| vectors.S | ||
| vmlinux.lds.S | ||
| xtensa_ksyms.c | ||