* [frederic-dynticks:rcu/test] [srcu] 6f1b1c9d95: WARNING:at_kernel/rcu/srcutree.c:#srcu_gp_start_if_needed
@ 2023-10-09 8:24 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-10-09 8:24 UTC (permalink / raw)
To: Frederic Weisbecker; +Cc: oe-lkp, lkp, oliver.sang
Hello,
kernel test robot noticed "WARNING:at_kernel/rcu/srcutree.c:#srcu_gp_start_if_needed" on:
commit: 6f1b1c9d95a2b601f3d9794319870528db3d2f37 ("srcu: Fix callbacks acceleration mishandling")
https://git.kernel.org/cgit/linux/kernel/git/frederic/linux-dynticks.git rcu/test
in testcase: boot
compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+-----------------------------------------------------------+------------+------------+
| | ee742b92d3 | 6f1b1c9d95 |
+-----------------------------------------------------------+------------+------------+
| WARNING:at_kernel/rcu/srcutree.c:#srcu_gp_start_if_needed | 0 | 24 |
| RIP:srcu_gp_start_if_needed | 0 | 24 |
+-----------------------------------------------------------+------------+------------+
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202310091634.19a7d9b7-oliver.sang@intel.com
[ 2.693789][ T1] ------------[ cut here ]------------
[ 2.695075][ T1] WARNING: CPU: 0 PID: 1 at kernel/rcu/srcutree.c:1278 srcu_gp_start_if_needed (kernel/rcu/srcutree.c:1278 (discriminator 1))
[ 2.696976][ T1] Modules linked in:
[ 2.697498][ T1] CPU: 0 PID: 1 Comm: swapper Not tainted 6.6.0-rc1-00071-g6f1b1c9d95a2 #1
[ 2.697498][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 2.697498][ T1] RIP: 0010:srcu_gp_start_if_needed (kernel/rcu/srcutree.c:1278 (discriminator 1))
[ 2.697498][ T1] Code: 75 39 fb e9 cc fc ff ff 0f b6 4c 24 18 4c 89 e2 4c 89 ee 48 89 df e8 9d f1 ff ff e9 2f ff ff ff 90 0f 0b 90 e9 8b fe ff ff 90 <0f> 0b 90 e9 51 fe ff ff 90 0f 0b 90 e9 5e fe ff ff e8 08 3b a6 02
All code
========
0: 75 39 jne 0x3b
2: fb sti
3: e9 cc fc ff ff jmp 0xfffffffffffffcd4
8: 0f b6 4c 24 18 movzbl 0x18(%rsp),%ecx
d: 4c 89 e2 mov %r12,%rdx
10: 4c 89 ee mov %r13,%rsi
13: 48 89 df mov %rbx,%rdi
16: e8 9d f1 ff ff call 0xfffffffffffff1b8
1b: e9 2f ff ff ff jmp 0xffffffffffffff4f
20: 90 nop
21: 0f 0b ud2
23: 90 nop
24: e9 8b fe ff ff jmp 0xfffffffffffffeb4
29: 90 nop
2a:* 0f 0b ud2 <-- trapping instruction
2c: 90 nop
2d: e9 51 fe ff ff jmp 0xfffffffffffffe83
32: 90 nop
33: 0f 0b ud2
35: 90 nop
36: e9 5e fe ff ff jmp 0xfffffffffffffe99
3b: e8 08 3b a6 02 call 0x2a63b48
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 90 nop
3: e9 51 fe ff ff jmp 0xfffffffffffffe59
8: 90 nop
9: 0f 0b ud2
b: 90 nop
c: e9 5e fe ff ff jmp 0xfffffffffffffe6f
11: e8 08 3b a6 02 call 0x2a63b1e
[ 2.697498][ T1] RSP: 0000:ffffc9000001fb50 EFLAGS: 00010046
[ 2.697498][ T1] RAX: 0000000000000000 RBX: ffffffff85540500 RCX: 0000000000000000
[ 2.697498][ T1] RDX: 1ffffffff0aa80da RSI: 0000000000000000 RDI: ffffffff855406d0
[ 2.697498][ T1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 2.697498][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
[ 2.697498][ T1] R13: ffffffff85540900 R14: ffffffff85540968 R15: ffffffff85540560
[ 2.697498][ T1] FS: 0000000000000000(0000) GS:ffffffff850c2000(0000) knlGS:0000000000000000
[ 2.697498][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.697498][ T1] CR2: ffff88843ffff000 CR3: 000000000507a000 CR4: 00000000000406f0
[ 2.697498][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2.697498][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2.697498][ T1] Call Trace:
[ 2.697498][ T1] <TASK>
[ 2.697498][ T1] ? __warn (kernel/panic.c:673)
[ 2.697498][ T1] ? srcu_gp_start_if_needed (kernel/rcu/srcutree.c:1278 (discriminator 1))
[ 2.697498][ T1] ? report_bug (lib/bug.c:180 lib/bug.c:219)
[ 2.697498][ T1] ? handle_bug (arch/x86/kernel/traps.c:237)
[ 2.697498][ T1] ? exc_invalid_op (arch/x86/kernel/traps.c:258 (discriminator 1))
[ 2.697498][ T1] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:568)
[ 2.697498][ T1] ? srcu_gp_start_if_needed (kernel/rcu/srcutree.c:1278 (discriminator 1))
[ 2.697498][ T1] tracepoint_remove_func (kernel/tracepoint.c:54 kernel/tracepoint.c:426)
[ 2.697498][ T1] ? tracing_stop_cmdline_record (kernel/trace/trace_sched_switch.c:119 kernel/trace/trace_sched_switch.c:139)
[ 2.697498][ T1] ? trace_pid_list_free (kernel/trace/trace_sched_switch.c:27)
[ 2.697498][ T1] tracepoint_probe_unregister (kernel/tracepoint.c:552)
[ 2.697498][ T1] ? tracepoint_remove_func (kernel/tracepoint.c:544)
[ 2.697498][ T1] ? trace_pid_list_free (kernel/trace/trace_sched_switch.c:27)
[ 2.697498][ T1] tracing_stop_cmdline_record (include/trace/events/sched.h:185 kernel/trace/trace_sched_switch.c:87 kernel/trace/trace_sched_switch.c:128 kernel/trace/trace_sched_switch.c:139)
[ 2.697498][ T1] function_trace_reset (kernel/trace/trace_functions.c:163)
[ 2.697498][ T1] trace_selftest_startup_function (kernel/trace/trace_selftest.c:727)
[ 2.697498][ T1] ? tracer_alloc_buffers+0x5f0/0x5f0
[ 2.697498][ T1] ? latency_fsnotify (kernel/trace/trace.c:2235)
[ 2.697498][ T1] run_tracer_selftest (kernel/trace/trace.c:2026)
[ 2.697498][ T1] init_trace_selftests (kernel/trace/trace.c:2092)
[ 2.697498][ T1] ? disable_tracing_selftest (kernel/trace/trace.c:2070)
[ 2.697498][ T1] do_one_initcall (init/main.c:1232)
[ 2.697498][ T1] ? trace_event_raw_event_initcall_level (init/main.c:1223)
[ 2.697498][ T1] ? kasan_set_track (mm/kasan/common.c:52)
[ 2.697498][ T1] ? __kasan_kmalloc (mm/kasan/common.c:374 mm/kasan/common.c:383)
[ 2.697498][ T1] do_initcalls (init/main.c:1293 init/main.c:1310)
[ 2.697498][ T1] kernel_init_freeable (init/main.c:1551)
[ 2.697498][ T1] ? rest_init (init/main.c:1429)
[ 2.697498][ T1] kernel_init (init/main.c:1439)
[ 2.697498][ T1] ? _raw_spin_unlock_irq (arch/x86/include/asm/preempt.h:104 include/linux/spinlock_api_smp.h:160 kernel/locking/spinlock.c:202)
[ 2.697498][ T1] ret_from_fork (arch/x86/kernel/process.c:153)
[ 2.697498][ T1] ? rest_init (init/main.c:1429)
[ 2.697498][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:312)
[ 2.697498][ T1] </TASK>
[ 2.697498][ T1] irq event stamp: 5404
[ 2.697498][ T1] hardirqs last enabled at (5403): _raw_spin_unlock_irqrestore (arch/x86/include/asm/irqflags.h:26 arch/x86/include/asm/irqflags.h:67 arch/x86/include/asm/irqflags.h:127 include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 2.697498][ T1] hardirqs last disabled at (5404): srcu_gp_start_if_needed (kernel/rcu/srcutree.c:373 kernel/rcu/srcutree.c:1244)
[ 2.697498][ T1] softirqs last enabled at (5072): __do_softirq (arch/x86/include/asm/preempt.h:27 kernel/softirq.c:400 kernel/softirq.c:582)
[ 2.697498][ T1] softirqs last disabled at (5051): irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644)
[ 2.697498][ T1] ---[ end trace 0000000000000000 ]---
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20231009/202310091634.19a7d9b7-oliver.sang@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2023-10-09 8:24 [frederic-dynticks:rcu/test] [srcu] 6f1b1c9d95: WARNING:at_kernel/rcu/srcutree.c:#srcu_gp_start_if_needed kernel test robot
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