On 11.07.19 00:29, Richard Weinberger via Xenomai wrote: > Hi! > > I can reliable kill Linux on qemu by writing a few times 1 and 0 to > /sys/kernel/debug/tracing/events/cobalt_core/enable > > Didn't test on real hardware so far. > The following splat happened on ipipe-core-4.19.57-x86-3 plus > xenomai-git as of today. > > [ 33.664656] Kernel panic - not syncing: Machine halted. > [ 33.665323] CPU: 2 PID: 2088 Comm: bash Not tainted 4.19.57 #1 > [ 33.666142] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), > BIOS rel-1.11.0-0-g63451fc-prebuilt.qemu-project.org 04/01/2014 > [ 33.667524] I-pipe domain: Linux > [ 33.667895] Call Trace: > [ 33.668354] <#DF> > [ 33.668695] dump_stack+0x8e/0xb3 > [ 33.669104] panic+0xdd/0x238 > [ 33.669456] df_debug+0x24/0x30 > [ 33.669834] do_double_fault+0x95/0x120 > [ 33.670323] double_fault+0x3f/0x60 > [ 33.670794] RIP: 0010:xnintr_core_clock_handler+0xad/0x370 > [ 33.671426] Code: c0 48 09 c2 49 89 96 80 1a 00 00 49 8d ae 88 1a > 00 00 48 8d 59 08 48 87 5d 00 48 c7 c0 d0 e3 02 00 48 83 01 01 cc 1f > 44 00 00 <41> 8b 86 10 03 00 00 49 81 4e 08 00 40 00 00 83 c0 01 41 89 > 86 10 > [ 33.673615] RSP: 0018:ffff964ebbb03f58 EFLAGS: 00010002 > [ 33.674235] RAX: 000000000002e3d0 RBX: ffff964ebbb315c0 RCX: > ffff964ebbb3bb00 > [ 33.675079] RDX: 00000013d41dbbce RSI: fffffffffc25fc34 RDI: > ffff964ebbb315c0 > [ 33.675923] RBP: ffff964ebbb31748 R08: ffff964ebb000249 R09: > 000000000002e320 > [ 33.676761] R10: 0000000000000040 R11: 0000000000000000 R12: > 0000000000000002 > [ 33.677600] R13: 000000000002fcc0 R14: ffff964ebbb2fcc0 R15: > ffff964ebbb2fcc0 > [ 33.678444] </#DF> > [ 33.678704] <IRQ> > [ 33.678955] dispatch_irq_head+0x84/0x110 > [ 33.679437] __ipipe_handle_irq+0x7c/0x1d0 > [ 33.679927] apic_timer_interrupt+0x12/0x40 > [ 33.680448] </IRQ> > [ 33.680805] RIP: 0010:smp_call_function_many+0x1e0/0x250 > [ 33.681505] Code: 5f 97 00 3b 05 d5 70 47 01 0f 83 99 fe ff ff 48 > 63 c8 48 8b 13 48 03 14 cd 00 b7 c9 ac 8b 4a 18 83 e1 01 74 0a f3 90 > 8b 4a 18 <83> e1 01 75 f6 eb c8 48 c7 c2 20 b9 f5 ac 48 89 ee 89 df e8 > b8 5f > [ 33.684312] RSP: 0018:ffffa2478079bc00 EFLAGS: 00000202 ORIG_RAX: > ffffffffffffff13 > [ 33.685347] RAX: 0000000000000001 RBX: ffff964ebbb35a00 RCX: > 0000000000000003 > [ 33.686198] RDX: ffff964ebbab9c80 RSI: 0000000000000000 RDI: > ffff964ebbb35a08 > [ 33.687044] RBP: ffff964ebbb35a08 R08: 000000000000000b R09: > ffffffffaba22300 > [ 33.687883] R10: ffffa2478079bc20 R11: f000000000000000 R12: > ffffffffaba22200 > [ 33.688725] R13: 0000000000000000 R14: 0000000000000001 R15: > 0000000000000040 > [ 33.689577] ? optimize_nops+0xe0/0xe0 > [ 33.690055] ? alternatives_text_reserved+0x60/0x60 > [ 33.690643] ? optimize_nops+0xe0/0xe0 > [ 33.691092] ? xnintr_core_clock_handler+0xa9/0x370 > [ 33.691657] ? trace_event_raw_event_irq_event+0xa0/0xa0 > [ 33.692489] on_each_cpu+0x23/0x50 > [ 33.692902] ? xnintr_core_clock_handler+0xa8/0x370 > [ 33.693464] text_poke_bp+0x63/0xe0 > [ 33.693875] __jump_label_transform.isra.0+0x12f/0x140 > [ 33.694466] arch_jump_label_transform+0x26/0x40 > [ 33.695093] __jump_label_update+0x78/0xb0 > [ 33.695567] static_key_slow_inc_cpuslocked+0x83/0x90 > [ 33.696147] static_key_slow_inc+0x11/0x20 > [ 33.696622] tracepoint_probe_register_prio+0x214/0x290 > [ 33.697241] __ftrace_event_enable_disable+0x96/0x260 > [ 33.697905] __ftrace_set_clr_event_nolock+0xe8/0x130 > [ 33.698488] system_enable_write+0xb3/0xf0 > [ 33.698537] BUG: Unhandled exception over domain Xenomai at > 0xffffffffabb5413d - switching to ROOT > [ 33.699032] __vfs_write+0x31/0x180 > [ 33.700443] ? selinux_file_permission+0x118/0x130 > [ 33.700979] ? security_file_permission+0x27/0xb0 > [ 33.701491] vfs_write+0xa8/0x190 > [ 33.701856] ksys_write+0x55/0xd0 > [ 33.702220] do_syscall_64+0x64/0x160 > [ 33.702644] entry_SYSCALL_64_after_hwframe+0x44/0xa9 > [ 33.703210] RIP: 0033:0x7fcc38f5bd04 > [ 33.703603] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f > 1f 80 00 00 00 00 8b 05 2a fb 2c 00 48 63 ff 85 c0 75 13 b8 01 00 00 > 00 0f 05 <48> 3d 00 f0 ff ff 77 54 f3 c3 66 90 55 53 48 89 d5 48 89 f3 > 48 83 > [ 33.705712] RSP: 002b:00007ffd5b051008 EFLAGS: 00000246 ORIG_RAX: > 0000000000000001 > [ 33.706673] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: > 00007fcc38f5bd04 > [ 33.707552] RDX: 0000000000000002 RSI: 0000564c21421700 RDI: > 0000000000000001 > [ 33.708399] RBP: 0000564c21421700 R08: 000000000000000a R09: > 0000000000000000 > [ 33.709264] R10: 000000000000000a R11: 0000000000000246 R12: > 0000000000000002 > [ 33.710197] R13: 0000000000000001 R14: 00007fcc39227720 R15: > 0000000000000002 > [ 33.711080] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.19.57 #1 > [ 33.711974] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), > BIOS rel-1.11.0-0-g63451fc-prebuilt.qemu-project.org 04/01/2014 > [ 33.715226] I-pipe domain: Linux > [ 33.715730] Call Trace: > [ 33.716176] <#DF> > [ 33.716529] dump_stack+0x8e/0xb3 > [ 33.717053] __ipipe_trap_prologue+0x1cd/0x220 > [ 33.717578] double_fault+0x24/0x60 > [ 33.717993] RIP: 0010:xnintr_core_clock_handler+0xad/0x370 > [ 33.718672] Code: c0 48 09 c2 49 89 96 80 1a 00 00 49 8d ae 88 1a > 00 00 48 8d 59 08 48 87 5d 00 48 c7 c0 d0 e3 02 00 48 83 01 01 cc 1f > 44 00 00 <41> 8b 86 10 03 00 00 49 81 4e 08 00 40 00 00 83 c0 01 41 89 > 86 10 > [ 33.720893] RSP: 0018:ffff964ebbb83f58 EFLAGS: 00010006 ORIG_RAX: > 0000000000000000 > [ 33.721775] RAX: 000000000002e3d0 RBX: ffff964ebbbb15c0 RCX: > ffff964ebbbbbb00 > [ 33.722624] RDX: 00000013d92e08de RSI: fffffffffcb1388a RDI: > ffff964ebbbb15c0 > [ 33.723469] RBP: ffff964ebbbb1748 R08: ffff964ebb000249 R09: > 000000000002e320 > [ 33.724416] R10: 0000000000000040 R11: 0000000000000000 R12: > 0000000000000003 > [ 33.725417] R13: 000000000002fcc0 R14: ffff964ebbbafcc0 R15: > ffff964ebbbafcc0 > [ 33.726380] </#DF> > [ 33.726711] <IRQ> > [ 33.727000] ? recalibrate_cpu_khz+0x10/0x10 > [ 33.727596] dispatch_irq_head+0x84/0x110 > [ 33.728151] __ipipe_handle_irq+0x7c/0x1d0 > [ 33.728759] apic_timer_interrupt+0x12/0x40 > [ 33.729367] </IRQ> > [ 33.729665] RIP: 0010:__ipipe_halt_root+0x25/0x40 > [ 33.730316] Code: 0b eb 87 66 90 fa 48 c7 c0 00 c2 01 00 65 48 8b > 15 08 15 5d 54 48 01 d0 48 0f ba 30 00 48 83 78 08 00 75 10 85 ff 75 > 03 fb f4 <c3> 31 c0 89 c1 fb 0f 01 c9 c3 e8 cc 2b 0d 00 fb c3 66 2e 0f > 1f 84 > [ 33.732943] RSP: 0018:ffffa247806a3ea8 EFLAGS: 00000246 ORIG_RAX: > ffffffffffffff13 > [ 33.734181] RAX: ffff964ebbb9c200 RBX: 0000000000000003 RCX: > ffff964ebbb80000 > [ 33.735184] RDX: ffff964ebbb80000 RSI: 0000000000000000 RDI: > 0000000000000000 > [ 33.736179] RBP: 0000000000000003 R08: ffff964ebbb80000 R09: > 00000007d3facb6a > [ 33.737155] R10: ffffa247806a3e88 R11: 0000000000080c00 R12: > 0000000000000000 > [ 33.738117] R13: 0000000000000000 R14: 0000000000000000 R15: > 0000000000000000 > [ 33.739367] default_idle+0x19/0x140 > [ 33.739873] do_idle+0x1cb/0x270 > [ 33.740336] cpu_startup_entry+0x6a/0x70 > [ 33.740901] start_secondary+0x178/0x1a0 > [ 33.741458] secondary_startup_64+0xa4/0xb0 > [ 33.742056] PANIC: double fault, error_code: 0x0 > [ 33.742707] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.19.57 #1 > [ 33.743542] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), > BIOS rel-1.11.0-0-g63451fc-prebuilt.qemu-project.org 04/01/2014 > [ 33.745162] I-pipe domain: Linux > [ 33.745641] RIP: 0010:xnintr_core_clock_handler+0xad/0x370 > [ 33.746399] Code: c0 48 09 c2 49 89 96 80 1a 00 00 49 8d ae 88 1a > 00 00 48 8d 59 08 48 87 5d 00 48 c7 c0 d0 e3 02 00 48 83 01 01 cc 1f > 44 00 00 <41> 8b 86 10 03 00 00 49 81 4e 08 00 40 00 00 83 c0 01 41 89 > 86 10 > [ 33.749092] RSP: 0018:ffff964ebbb83f58 EFLAGS: 00010006 > [ 33.749807] RAX: 000000000002e3d0 RBX: ffff964ebbbb15c0 RCX: > ffff964ebbbbbb00 > [ 33.750803] RDX: 00000013d92e08de RSI: fffffffffcb1388a RDI: > ffff964ebbbb15c0 > [ 33.751905] RBP: ffff964ebbbb1748 R08: ffff964ebb000249 R09: > 000000000002e320 > [ 33.752866] R10: 0000000000000040 R11: 0000000000000000 R12: > 0000000000000003 > [ 33.753877] R13: 000000000002fcc0 R14: ffff964ebbbafcc0 R15: > ffff964ebbbafcc0 > [ 33.754879] FS: 0000000000000000(0000) GS:ffff964ebbb80000(0000) > knlGS:0000000000000000 > [ 33.756016] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 33.756804] CR2: ffff964ebbb83f48 CR3: 0000000136c40000 CR4: > 00000000000006e0 > [ 33.757820] Call Trace: > [ 33.758221] <IRQ> > [ 33.758618] ? recalibrate_cpu_khz+0x10/0x10 > [ 33.759508] dispatch_irq_head+0x84/0x110 > [ 33.760545] __ipipe_handle_irq+0x7c/0x1d0 > [ 33.761197] apic_timer_interrupt+0x12/0x40 > [ 33.761710] </IRQ> > [ 33.761968] RIP: 0010:__ipipe_halt_root+0x25/0x40 > [ 33.762522] Code: 0b eb 87 66 90 fa 48 c7 c0 00 c2 01 00 65 48 8b > 15 08 15 5d 54 48 01 d0 48 0f ba 30 00 48 83 78 08 00 75 10 85 ff 75 > 03 fb f4 <c3> 31 c0 89 c1 fb 0f 01 c9 c3 e8 cc 2b 0d 00 fb c3 66 2e 0f > 1f 84 > [ 33.764794] RSP: 0018:ffffa247806a3ea8 EFLAGS: 00000246 ORIG_RAX: > ffffffffffffff13 > [ 33.765739] RAX: ffff964ebbb9c200 RBX: 0000000000000003 RCX: > ffff964ebbb80000 > [ 33.766568] RDX: ffff964ebbb80000 RSI: 0000000000000000 RDI: > 0000000000000000 > [ 33.767437] RBP: 0000000000000003 R08: ffff964ebbb80000 R09: > 00000007d3facb6a > [ 33.768308] R10: ffffa247806a3e88 R11: 0000000000080c00 R12: > 0000000000000000 > [ 33.769143] R13: 0000000000000000 R14: 0000000000000000 R15: > 0000000000000000 > [ 33.769975] default_idle+0x19/0x140 > [ 33.770431] do_idle+0x1cb/0x270 > [ 33.770853] cpu_startup_entry+0x6a/0x70 > [ 33.771317] start_secondary+0x178/0x1a0 > [ 33.771781] secondary_startup_64+0xa4/0xb0 > [ 34.804315] Shutting down cpus with NMI > [ 34.804938] Kernel Offset: 0x2aa00000 from 0xffffffff81000000 > (relocation range: 0xffffffff80000000-0xffffffffbfffffff) > [ 34.806481] ---[ end Kernel panic - not syncing: Machine halted. ]--- > [ 34.807305] BUG: Unhandled exception over domain Xenomai at > 0xffffffffabb5413d - switching to ROOT > [ 34.808369] CPU: 2 PID: 2088 Comm: bash Not tainted 4.19.57 #1 > [ 34.809093] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), > BIOS rel-1.11.0-0-g63451fc-prebuilt.qemu-project.org 04/01/2014 > [ 34.810495] I-pipe domain: Linux > [ 34.810921] Call Trace: > [ 34.811275] <#DF> > [ 34.811599] dump_stack+0x8e/0xb3 > [ 34.811995] __ipipe_trap_prologue+0x1cd/0x220 > [ 34.812521] double_fault+0x24/0x60 > [ 34.812936] RIP: 0010:xnintr_core_clock_handler+0xad/0x370 > [ 34.813582] Code: c0 48 09 c2 49 89 96 80 1a 00 00 49 8d ae 88 1a > 00 00 48 8d 59 08 48 87 5d 00 48 c7 c0 d0 e3 02 00 48 83 01 01 cc 1f > 44 00 00 <41> 8b 86 10 03 00 00 49 81 4e 08 00 40 00 00 83 c0 01 41 89 > 86 10 > [ 34.815788] RSP: 0018:ffff964ebbb03f58 EFLAGS: 00010002 ORIG_RAX: > 0000000000000000 > [ 34.816672] RAX: 000000000002e3d0 RBX: ffff964ebbb315c0 RCX: > ffff964ebbb3bb00 > [ 34.817507] RDX: 00000013d41dbbce RSI: fffffffffc25fc34 RDI: > ffff964ebbb315c0 > [ 34.818342] RBP: ffff964ebbb31748 R08: ffff964ebb000249 R09: > 000000000002e320 > [ 34.819212] R10: 0000000000000040 R11: 0000000000000000 R12: > 0000000000000002 > [ 34.820081] R13: 000000000002fcc0 R14: ffff964ebbb2fcc0 R15: > ffff964ebbb2fcc0 > [ 34.820979] </#DF> > [ 34.821235] <IRQ> > [ 34.821481] dispatch_irq_head+0x84/0x110 > [ 34.821957] __ipipe_handle_irq+0x7c/0x1d0 > [ 34.822442] apic_timer_interrupt+0x12/0x40 > [ 34.822999] </IRQ> > [ 34.823256] RIP: 0010:smp_call_function_many+0x1e0/0x250 > [ 34.823881] Code: 5f 97 00 3b 05 d5 70 47 01 0f 83 99 fe ff ff 48 > 63 c8 48 8b 13 48 03 14 cd 00 b7 c9 ac 8b 4a 18 83 e1 01 74 0a f3 90 > 8b 4a 18 <83> e1 01 75 f6 eb c8 48 c7 c2 20 b9 f5 ac 48 89 ee 89 df e8 > b8 5f > [ 34.826148] RSP: 0018:ffffa2478079bc00 EFLAGS: 00000202 ORIG_RAX: > ffffffffffffff13 > [ 34.827095] RAX: 0000000000000001 RBX: ffff964ebbb35a00 RCX: > 0000000000000003 > [ 34.827927] RDX: ffff964ebbab9c80 RSI: 0000000000000000 RDI: > ffff964ebbb35a08 > [ 34.828797] RBP: ffff964ebbb35a08 R08: 000000000000000b R09: > ffffffffaba22300 > [ 34.829675] R10: ffffa2478079bc20 R11: f000000000000000 R12: > ffffffffaba22200 > [ 34.830509] R13: 0000000000000000 R14: 0000000000000001 R15: > 0000000000000040 > [ 34.831381] ? optimize_nops+0xe0/0xe0 > [ 34.831824] ? alternatives_text_reserved+0x60/0x60 > [ 34.832398] ? optimize_nops+0xe0/0xe0 > [ 34.832843] ? xnintr_core_clock_handler+0xa9/0x370 > [ 34.833452] ? trace_event_raw_event_irq_event+0xa0/0xa0 > [ 34.834075] on_each_cpu+0x23/0x50 > [ 34.834522] ? xnintr_core_clock_handler+0xa8/0x370 > [ 34.835141] text_poke_bp+0x63/0xe0 > [ 34.835592] __jump_label_transform.isra.0+0x12f/0x140 > [ 34.836196] arch_jump_label_transform+0x26/0x40 > [ 34.836777] __jump_label_update+0x78/0xb0 > [ 34.837261] static_key_slow_inc_cpuslocked+0x83/0x90 > [ 34.837854] static_key_slow_inc+0x11/0x20 > [ 34.838337] tracepoint_probe_register_prio+0x214/0x290 > [ 34.838985] __ftrace_event_enable_disable+0x96/0x260 > [ 34.839655] __ftrace_set_clr_event_nolock+0xe8/0x130 > [ 34.840268] system_enable_write+0xb3/0xf0 > [ 34.840785] __vfs_write+0x31/0x180 > [ 34.841201] ? selinux_file_permission+0x118/0x130 > [ 34.841764] ? security_file_permission+0x27/0xb0 > [ 34.842317] vfs_write+0xa8/0x190 > [ 34.842745] ksys_write+0x55/0xd0 > [ 34.843139] do_syscall_64+0x64/0x160 > [ 34.843573] entry_SYSCALL_64_after_hwframe+0x44/0xa9 > [ 34.844166] RIP: 0033:0x7fcc38f5bd04 > [ 34.844590] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f > 1f 80 00 00 00 00 8b 05 2a fb 2c 00 48 63 ff 85 c0 75 13 b8 01 00 00 > 00 0f 05 <48> 3d 00 f0 ff ff 77 54 f3 c3 66 90 55 53 48 89 d5 48 89 f3 > 48 83 > [ 34.846820] RSP: 002b:00007ffd5b051008 EFLAGS: 00000246 ORIG_RAX: > 0000000000000001 > [ 34.847703] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: > 00007fcc38f5bd04 > [ 34.848551] RDX: 0000000000000002 RSI: 0000564c21421700 RDI: > 0000000000000001 > [ 34.849398] RBP: 0000564c21421700 R08: 000000000000000a R09: > 0000000000000000 > [ 34.850228] R10: 000000000000000a R11: 0000000000000246 R12: > 0000000000000002 > [ 34.851095] R13: 0000000000000001 R14: 00007fcc39227720 R15: > 0000000000000002 > [ 34.851975] PANIC: double fault, error_code: 0x0 > [ 34.852552] CPU: 2 PID: 2088 Comm: bash Not tainted 4.19.57 #1 > [ 34.853232] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), > BIOS rel-1.11.0-0-g63451fc-prebuilt.qemu-project.org 04/01/2014 > [ 34.854592] I-pipe domain: Linux > [ 34.855042] RIP: 0010:xnintr_core_clock_handler+0xad/0x370 > [ 34.855683] Code: c0 48 09 c2 49 89 96 80 1a 00 00 49 8d ae 88 1a > 00 00 48 8d 59 08 48 87 5d 00 48 c7 c0 d0 e3 02 00 48 83 01 01 cc 1f > 44 00 00 <41> 8b 86 10 03 00 00 49 81 4e 08 00 40 00 00 83 c0 01 41 89 > 86 10 > [ 34.857848] RSP: 0018:ffff964ebbb03f58 EFLAGS: 00010002 > [ 34.858483] RAX: 000000000002e3d0 RBX: ffff964ebbb315c0 RCX: > ffff964ebbb3bb00 > [ 34.859366] RDX: 00000013d41dbbce RSI: fffffffffc25fc34 RDI: > ffff964ebbb315c0 > [ 34.860199] RBP: ffff964ebbb31748 R08: ffff964ebb000249 R09: > 000000000002e320 > [ 34.861031] R10: 0000000000000040 R11: 0000000000000000 R12: > 0000000000000002 > [ 34.861864] R13: 000000000002fcc0 R14: ffff964ebbb2fcc0 R15: > ffff964ebbb2fcc0 > [ 34.862729] FS: 00007fcc39894b80(0000) GS:ffff964ebbb00000(0000) > knlGS:0000000000000000 > [ 34.863672] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 34.864344] CR2: ffff964ebbb03f48 CR3: 0000000135154000 CR4: > 00000000000006e0 > [ 34.865207] Call Trace: > [ 34.865524] <IRQ> > [ 34.865779] dispatch_irq_head+0x84/0x110 > [ 34.866270] __ipipe_handle_irq+0x7c/0x1d0 > [ 34.866787] apic_timer_interrupt+0x12/0x40 > [ 34.867280] </IRQ> > [ 34.867535] RIP: 0010:smp_call_function_many+0x1e0/0x250 > [ 34.868190] Code: 5f 97 00 3b 05 d5 70 47 01 0f 83 99 fe ff ff 48 > 63 c8 48 8b 13 48 03 14 cd 00 b7 c9 ac 8b 4a 18 83 e1 01 74 0a f3 90 > 8b 4a 18 <83> e1 01 75 f6 eb c8 48 c7 c2 20 b9 f5 ac 48 89 ee 89 df e8 > b8 5f > [ 34.870392] RSP: 0018:ffffa2478079bc00 EFLAGS: 00000202 ORIG_RAX: > ffffffffffffff13 > [ 34.871308] RAX: 0000000000000001 RBX: ffff964ebbb35a00 RCX: > 0000000000000003 > [ 34.872139] RDX: ffff964ebbab9c80 RSI: 0000000000000000 RDI: > ffff964ebbb35a08 > [ 34.873002] RBP: ffff964ebbb35a08 R08: 000000000000000b R09: > ffffffffaba22300 > [ 34.873834] R10: ffffa2478079bc20 R11: f000000000000000 R12: > ffffffffaba22200 > [ 34.874698] R13: 0000000000000000 R14: 0000000000000001 R15: > 0000000000000040 > [ 34.875560] ? optimize_nops+0xe0/0xe0 > [ 34.876003] ? alternatives_text_reserved+0x60/0x60 > [ 34.876577] ? optimize_nops+0xe0/0xe0 > [ 34.877021] ? xnintr_core_clock_handler+0xa9/0x370 > [ 34.877594] ? trace_event_raw_event_irq_event+0xa0/0xa0 > [ 34.878252] on_each_cpu+0x23/0x50 > [ 34.878691] ? xnintr_core_clock_handler+0xa8/0x370 > [ 34.879265] text_poke_bp+0x63/0xe0 > [ 34.879682] __jump_label_transform.isra.0+0x12f/0x140 > [ 34.880285] arch_jump_label_transform+0x26/0x40 > [ 34.880827] __jump_label_update+0x78/0xb0 > [ 34.881311] static_key_slow_inc_cpuslocked+0x83/0x90 > [ 34.881902] static_key_slow_inc+0x11/0x20 > [ 34.882384] tracepoint_probe_register_prio+0x214/0x290 > [ 34.883031] __ftrace_event_enable_disable+0x96/0x260 > [ 34.883623] __ftrace_set_clr_event_nolock+0xe8/0x130 > [ 34.884251] system_enable_write+0xb3/0xf0 > [ 34.884770] __vfs_write+0x31/0x180 > [ 34.885218] ? selinux_file_permission+0x118/0x130 > [ 34.885781] ? security_file_permission+0x27/0xb0 > [ 34.886333] vfs_write+0xa8/0x190 > [ 34.886760] ksys_write+0x55/0xd0 > [ 34.887155] do_syscall_64+0x64/0x160 > [ 34.887589] entry_SYSCALL_64_after_hwframe+0x44/0xa9 > [ 34.888220] RIP: 0033:0x7fcc38f5bd04 > [ 34.888645] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f > 1f 80 00 00 00 00 8b 05 2a fb 2c 00 48 63 ff 85 c0 75 13 b8 01 00 00 > 00 0f 05 <48> 3d 00 f0 ff ff 77 54 f3 c3 66 90 55 53 48 89 d5 48 89 f3 > 48 83 > [ 34.890845] RSP: 002b:00007ffd5b051008 EFLAGS: 00000246 ORIG_RAX: > 0000000000000001 > [ 34.891728] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: > 00007fcc38f5bd04 > [ 34.892560] RDX: 0000000000000002 RSI: 0000564c21421700 RDI: > 0000000000000001 > [ 34.893393] RBP: 0000564c21421700 R08: 000000000000000a R09: > 0000000000000000 > [ 34.894228] R10: 000000000000000a R11: 0000000000000246 R12: > 0000000000000002 > [ 34.895337] R13: 0000000000000001 R14: 00007fcc39227720 R15: > 0000000000000002 >
Can't reproduce so far, even with a while-true loop. Can you share your .config? Jan -- Siemens AG, Corporate Technology, CT RDA IOT SES-DE Corporate Competence Center Embedded Linux
