Messages in this thread | | | Date | Thu, 7 Dec 2023 16:19:56 +0800 | From | kernel test robot <> | Subject | [paulmck-rcu:dev.2023.11.08a] [EXP locktorture] 1254a620b4: WARNING:at_kernel/rcu/tree_stall.h:#rcu_stall_chain_notifier_register |
| |
Hello,
kernel test robot noticed "WARNING:at_kernel/rcu/tree_stall.h:#rcu_stall_chain_notifier_register" on:
commit: 1254a620b4a3832e65ac01bcef769b99e34515b2 ("EXP locktorture: Add RCU CPU stall-warning notifier stub") https://git.kernel.org/cgit/linux/kernel/git/paulmck/linux-rcu.git dev.2023.11.08a
in testcase: locktorture version: with following parameters:
runtime: 300s test: cpuhotplug
compiler: clang-16 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+-----------------------------------------------------------------------+------------+------------+ | | 11b2bc2909 | 1254a620b4 | +-----------------------------------------------------------------------+------------+------------+ | WARNING:at_kernel/rcu/tree_stall.h:#rcu_stall_chain_notifier_register | 0 | 12 | | RIP:rcu_stall_chain_notifier_register | 0 | 12 | +-----------------------------------------------------------------------+------------+------------+
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/202312071506.6eac1bac-oliver.sang@intel.com
[ 200.668175][ T876] ------------[ cut here ]------------ [ 200.669199][ T876] Adding torture_spin_lock_dump+0x0/0x20 [locktorture]() to RCU stall notifier list (failed, so all is well). [ 200.671183][ T876] WARNING: CPU: 1 PID: 876 at kernel/rcu/tree_stall.h:1088 rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.673094][ T876] Modules linked in: locktorture(+) torture [ 200.674129][ T876] CPU: 1 PID: 876 Comm: modprobe Tainted: G W N 6.6.0-03747-g1254a620b4a3 #1 44194d056aabc0fb2e11ad706d62f862fdc5dd23 [ 200.676413][ T876] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 200.678192][ T876] RIP: 0010:rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.679403][ T876] Code: 89 df e8 2f 0c 35 00 48 8b 33 85 ed 48 c7 c0 00 cb 49 97 48 c7 c2 a0 ca 49 97 48 0f 44 d0 48 c7 c7 40 ca 49 97 e8 fc 69 e4 ff <0f> 0b 85 ed 74 13 48 c7 c7 20 c7 1d 99 48 89 de 5b 41 5e 5d e9 83 All code ======== 0: 89 df mov %ebx,%edi 2: e8 2f 0c 35 00 call 0x350c36 7: 48 8b 33 mov (%rbx),%rsi a: 85 ed test %ebp,%ebp c: 48 c7 c0 00 cb 49 97 mov $0xffffffff9749cb00,%rax 13: 48 c7 c2 a0 ca 49 97 mov $0xffffffff9749caa0,%rdx 1a: 48 0f 44 d0 cmove %rax,%rdx 1e: 48 c7 c7 40 ca 49 97 mov $0xffffffff9749ca40,%rdi 25: e8 fc 69 e4 ff call 0xffffffffffe46a26 2a:* 0f 0b ud2 <-- trapping instruction 2c: 85 ed test %ebp,%ebp 2e: 74 13 je 0x43 30: 48 c7 c7 20 c7 1d 99 mov $0xffffffff991dc720,%rdi 37: 48 89 de mov %rbx,%rsi 3a: 5b pop %rbx 3b: 41 5e pop %r14 3d: 5d pop %rbp 3e: e9 .byte 0xe9 3f: 83 .byte 0x83
Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 85 ed test %ebp,%ebp 4: 74 13 je 0x19 6: 48 c7 c7 20 c7 1d 99 mov $0xffffffff991dc720,%rdi d: 48 89 de mov %rbx,%rsi 10: 5b pop %rbx 11: 41 5e pop %r14 13: 5d pop %rbp 14: e9 .byte 0xe9 15: 83 .byte 0x83 [ 200.682780][ T876] RSP: 0018:ffffc90002b67978 EFLAGS: 00010246 [ 200.683857][ T876] RAX: 000000000000006b RBX: ffffffffc040a220 RCX: 0000000000000027 [ 200.685304][ T876] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff8883aeb27a10 [ 200.686724][ T876] RBP: 0000000000000000 R08: ffff8883aeb27a13 R09: 1ffff11075d64f42 [ 200.688142][ T876] R10: dffffc0000000000 R11: ffffed1075d64f43 R12: ffff88814879e080 [ 200.689573][ T876] R13: ffffc90002b679e0 R14: dffffc0000000000 R15: dffffc0000000000 [ 200.690976][ T876] FS: 0000000000000000(0000) GS:ffff8883aeb00000(0063) knlGS:00000000f7aa9700 [ 200.692536][ T876] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 200.693695][ T876] CR2: 000000005664b010 CR3: 0000000141a71000 CR4: 00000000000406f0 [ 200.695095][ T876] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 200.696540][ T876] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 200.698173][ T876] Call Trace: [ 200.698865][ T876] <TASK> [ 200.699476][ T876] ? __warn (kernel/panic.c:235 kernel/panic.c:673) [ 200.700283][ T876] ? rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.701381][ T876] ? rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.702461][ T876] ? report_bug (lib/bug.c:?) [ 200.703294][ T876] ? handle_bug (arch/x86/kernel/traps.c:237) [ 200.704128][ T876] ? exc_invalid_op (arch/x86/kernel/traps.c:258) [ 200.704995][ T876] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:568) [ 200.705913][ T876] ? rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.707177][ T876] ? rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.708908][ T876] init_module (include/linux/cpumask.h:909 kernel/locking/locktorture.c:98 kernel/locking/locktorture.c:1051) locktorture [ 200.710509][ T876] do_one_initcall (init/main.c:1232) [ 200.711382][ T876] ? 0xffffffffc0418000 [ 200.712246][ T876] ? __asan_register_globals (mm/kasan/generic.c:229) [ 200.713299][ T876] do_init_module (kernel/module/main.c:2530) [ 200.714163][ T876] __se_sys_finit_module (kernel/module/main.c:3148 kernel/module/main.c:3166 kernel/module/main.c:3186 kernel/module/main.c:3169) [ 200.715119][ T876] __do_fast_syscall_32 (arch/x86/entry/common.c:164) [ 200.716056][ T876] do_fast_syscall_32 (arch/x86/entry/common.c:255) [ 200.716965][ T876] entry_SYSENTER_compat_after_hwframe (arch/x86/entry/entry_64_compat.S:121) [ 200.718040][ T876] RIP: 0023:0xf7fbb539 [ 200.718801][ T876] Code: 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 cc 90 90 90 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 All code ======== 0: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 4: 10 07 adc %al,(%rdi) 6: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi a: 10 08 adc %cl,(%rax) c: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi ... 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24:* 89 e5 mov %esp,%ebp <-- trapping instruction 26: 0f 34 sysenter 28: cd 80 int $0x80 2a: 5d pop %rbp 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 ret 2e: cc int3 2f: 90 nop 30: 90 nop 31: 90 nop 32: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 39: 00 00 00 3c: 0f .byte 0xf 3d: 1f (bad) 3e: 44 rex.R ...
Code starting with the faulting instruction =========================================== 0: 5d pop %rbp 1: 5a pop %rdx 2: 59 pop %rcx 3: c3 ret 4: cc int3 5: 90 nop 6: 90 nop 7: 90 nop 8: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) f: 00 00 00 12: 0f .byte 0xf 13: 1f (bad) 14: 44 rex.R
The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20231207/202312071506.6eac1bac-oliver.sang@intel.com
-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
| |