Rpi3, -current, panic: data abort with spinlock held
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Date: Sun, 06 Feb 2022 20:08:40 UTC
[repost, apologies if duplicate] While running -current on a Pi3, up to date as of a few days ago, an invocation of stress2 triggered the following panic: 20220205 10:25:26 all (7/809): arp.sh panic: data abort with spinlock held cpuid = 0 time = 1644085599 KDB: stack backtrace: db_trace_self() at db_trace_self db_trace_self_wrapper() at db_trace_self_wrapper+0x30 vpanic() at vpanic+0x174 panic() at panic+0x44 data_abort() at data_abort+0x2a0 handle_el1h_sync() at handle_el1h_sync+0x10 --- exception, esr 0x96000007 generic_bs_rr_4() at generic_bs_rr_4+0xc dwc_otg_interrupt_poll_locked() at dwc_otg_interrupt_poll_locked+0x69c dwc_otg_filter_interrupt() at dwc_otg_filter_interrupt+0x130 intr_event_handle() at intr_event_handle+0xf0 intr_isrc_dispatch() at intr_isrc_dispatch+0x74 bcm2835_intc_intr() at bcm2835_intc_intr+0xa4 intr_event_handle() at intr_event_handle+0xf0 intr_isrc_dispatch() at intr_isrc_dispatch+0x74 bcm_lintc_intr() at bcm_lintc_intr+0x1d8 intr_irq_handler() at intr_irq_handler+0x80 handle_el1h_irq() at handle_el1h_irq+0xc --- interrupt pcpu_cache_drain_safe() at pcpu_cache_drain_safe+0x2dc uma_reclaim_domain() at uma_reclaim_domain+0x1e4 uma_reclaim_worker() at uma_reclaim_worker+0x68 fork_exit() at fork_exit+0x74 fork_trampoline() at fork_trampoline+0x14 KDB: enter: panic [ thread pid 6 tid 100076 ] Stopped at kdb_enter+0x44: undefined f901c11f db> bt Tracing pid 6 tid 100076 td 0xffffa000012dc000 db_trace_self() at db_trace_self db_stack_trace() at db_stack_trace+0x11c db_command() at db_command+0x368 db_command_loop() at db_command_loop+0x54 db_trap() at db_trap+0xf8 kdb_trap() at kdb_trap+0x1cc handle_el1h_sync() at handle_el1h_sync+0x10 --- exception, esr 0xf2000000 kdb_enter() at kdb_enter+0x44 vpanic() at vpanic+0x1b0 panic() at panic+0x44 data_abort() at data_abort+0x2a0 handle_el1h_sync() at handle_el1h_sync+0x10 --- exception, esr 0x96000007 generic_bs_rr_4() at generic_bs_rr_4+0xc dwc_otg_interrupt_poll_locked() at dwc_otg_interrupt_poll_locked+0x69c dwc_otg_filter_interrupt() at dwc_otg_filter_interrupt+0x130 intr_event_handle() at intr_event_handle+0xf0 intr_isrc_dispatch() at intr_isrc_dispatch+0x74 bcm2835_intc_intr() at bcm2835_intc_intr+0xa4 intr_event_handle() at intr_event_handle+0xf0 intr_isrc_dispatch() at intr_isrc_dispatch+0x74 bcm_lintc_intr() at bcm_lintc_intr+0x1d8 intr_irq_handler() at intr_irq_handler+0x80 handle_el1h_irq() at handle_el1h_irq+0xc --- interrupt pcpu_cache_drain_safe() at pcpu_cache_drain_safe+0x2dc uma_reclaim_domain() at uma_reclaim_domain+0x1e4 uma_reclaim_worker() at uma_reclaim_worker+0x68 fork_exit() at fork_exit+0x74 fork_trampoline() at fork_trampoline+0x14 db> Thanks for reading, if more details are wanted I'll try to supply them. I have tried to update and rebuild, but the builds stop with: /usr/src/contrib/llvm-project/llvm/lib/Target/X86/MCTargetDesc/X86ATTInstPrinter.cpp:38:6: error: expected '(' for function-style cast or type construction void X86ATTInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const { ~~~ ^ bob prohaska ----- End forwarded message -----