Re: [Crash-utility] [PATCH] Fix for "bt" command prints a bogus warning

On 2023/02/06 11:04, lijiang wrote: ok, it looks the expected one. The irq_eframe_link value has been hardcoded for a long time, it might be hard to calculate it in the current implementation.. btw, what is the kernel version of your vmcore this case? And for RHEL9, this trial patch looks good, how does this work for your vmcore? https://github.com/k-hagio/crash/commit/0719360a2b76b3c03b1f7ad06caf2ce14... Thanks, Kazu >> >> crash> bt >> PID: 0        TASK: ffff9e7a47e32f00  CPU: 3    COMMAND: "swapper/3" >>  #0 [ffffba7900118bb8] machine_kexec at ffffffff87e5c2c7 >>  #1 [ffffba7900118c08] __crash_kexec at ffffffff87f9500d >>  #2 [ffffba7900118cd0] panic at ffffffff87edfff9 >>  #3 [ffffba7900118d50] sysrq_handle_crash at ffffffff883ce2c1 >>  #4 [ffffba7900118d58] __handle_sysrq.cold.15 at ffffffff883ceb56 >>  #5 [ffffba7900118d88] sysrq_filter at ffffffff883ce9a2 >>  #6 [ffffba7900118dc0] input_to_handler at ffffffff884fb0bf >>  #7 [ffffba7900118df8] input_pass_values at ffffffff884fc1b7 >>  #8 [ffffba7900118e20] input_handle_event at ffffffff884fe278 >>  #9 [ffffba7900118e50] input_event at ffffffff884fe74b >> #10 [ffffba7900118e88] atkbd_interrupt at ffffffff88504e2f >> #11 [ffffba7900118ee0] serio_interrupt at ffffffff884f7516 >> #12 [ffffba7900118f10] i8042_interrupt at ffffffff884f8b04 >> #13 [ffffba7900118f50] __handle_irq_event_percpu at ffffffff87f51430 >> #14 [ffffba7900118f90] handle_irq_event_percpu at ffffffff87f51590 >> #15 [ffffba7900118fb8] handle_irq_event at ffffffff87f51616 >> #16 [ffffba7900118fd8] handle_edge_irq at ffffffff87f559f2 >> #17 [ffffba7900118ff0] asm_call_on_stack at ffffffff88800fa2 >> --- <IRQ stack> --- >> #18 [ffffba790008be08] asm_call_on_stack at ffffffff88800fa2 >>     [exception RIP: default_idle+37] >>     RIP: ffffffff8876ffc5  RSP: ffffba790008beb8  RFLAGS: 00000246 >>     RAX: ffffffff8876ffa0  RBX: 0000000000000003  RCX: 0000000000000001 >>     RDX: 000000000001a6de  RSI: 0000000000000087  RDI: 0000000000000003 >>     RBP: 0000000000000003   R8: 000000146ccbc1f0   R9: 0000000000000000 >>     R10: 0000000000000000  R11: 0000000000000124  R12: ffffffffffffffff >>     R13: 0000000000000000  R14: 0000000000000000  R15: 0000000000000000 >>     ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018 >> #19 [ffffba790008bed8] do_idle at ffffffff87f1982d >> #20 [ffffba790008bf20] cpu_startup_entry at ffffffff87f19a29 >> #21 [ffffba790008bf30] start_secondary at ffffffff87e5118f >> #22 [ffffba790008bf50] secondary_startup_64 at ffffffff87e000e6 >> crash>>> Let me debug it more and to see what happened. >> >> What is printed as the panic message in "log" command? >> >> >> The kernel panic message: >> [   57.542538] Kernel panic - not syncing: sysrq triggered crash >> [   57.545512] CPU: 3 PID: 0 Comm: swapper/3 Kdump: loaded Not tainted 5.7.0+ #7 >> [   57.549160] Hardware name: Red Hat KVM/RHEL-AV, BIOS 0.0.0 02/06/2015 >> [   57.552655] Call Trace: >> [   57.553994]  <IRQ> >> [   57.555143]  dump_stack+0x57/0x70 >> [   57.556930]  panic+0xfb/0x2d7 >> [   57.558516]  ? printk+0x58/0x6f >> [   57.560194]  sysrq_handle_crash+0x11/0x20 >> [   57.562371]  __handle_sysrq.cold.15+0x48/0x102 >> [   57.564663]  sysrq_filter+0x312/0x3c0 >> [   57.566579]  input_to_handler+0x4f/0xf0 >> [   57.568583]  input_pass_values.part.7+0x117/0x130 >> [   57.571188]  input_handle_event+0x138/0x5c0 >> [   57.573380]  input_event+0x4b/0x70 >> [   57.575173]  atkbd_interrupt+0x61f/0x6a0 >> [   57.577228]  serio_interrupt+0x46/0x90 >> [   57.579192]  i8042_interrupt+0x154/0x240 >> [   57.581328]  __handle_irq_event_percpu+0x40/0x170 >> [   57.583788]  handle_irq_event_percpu+0x30/0x80 >> [   57.586081]  handle_irq_event+0x36/0x53 >> [   57.588071]  handle_edge_irq+0x82/0x190 >> [   57.590096]  asm_call_on_stack+0x12/0x20 >> [   57.592142]  </IRQ> >> [   57.593264]  common_interrupt+0xb5/0x140 >> [   57.595311]  asm_common_interrupt+0x1e/0x40 >> [   57.597474] RIP: 0010:default_idle+0x25/0x150 >> [   57.599735] Code: cc cc cc cc cc 66 66 66 66 90 41 55 41 54 55 65 8b 2d af 23 8a 77 53 66 66 66 66 90 e9 07 00 00 00 0f 00 2d 9f 37 49 00 fb f4 <65> 8b 2d 94 23 8a 77 66 66 66 66 90 5b 5d 41 5c 41 5d c3 65 8b 05 >> [   57.609196] RSP: 0018:ffffba790008beb8 EFLAGS: 00000246 >> [   57.611875] RAX: ffffffff8876ffa0 RBX: 0000000000000003 RCX: 0000000000000001 >> [   57.615506] RDX: 000000000001a6de RSI: 0000000000000087 RDI: 0000000000000003 >> [   57.619142] RBP: 0000000000000003 R08: 000000146ccbc1f0 R09: 0000000000000000 >> [   57.622770] R10: 0000000000000000 R11: 0000000000000124 R12: ffffffffffffffff >> [   57.626386] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 >> [   57.630029]  ? __cpuidle_text_start+0x8/0x8 >> [   57.632209]  do_idle+0x1bd/0x240 >> [   57.633914]  cpu_startup_entry+0x19/0x20 >> [   57.635966]  start_secondary+0x15f/0x1b0 >> [   57.638021]  secondary_startup_64+0xb6/0xc0 >> Thanks. >> Lianbo >>