* [morimoto:string-helper-2025-07-22] [maple tree] f8c8dfd75d: WARNING:possible_circular_locking_dependency_detected
@ 2025-07-22 7:04 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2025-07-22 7:04 UTC (permalink / raw)
To: Kuninori Morimoto; +Cc: oe-lkp, lkp, oliver.sang
Hello,
kernel test robot noticed "WARNING:possible_circular_locking_dependency_detected" on:
commit: f8c8dfd75d35332116f689f299014e53d18acdf9 ("maple tree: tidyup frame size error")
https://github.com/morimoto/linux string-helper-2025-07-22
in testcase: trinity
version: trinity-i386-abe9de86-1_20230429
with following parameters:
runtime: 300s
group: group-02
nr_groups: 5
config: i386-randconfig-007-20250717
compiler: clang-20
test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------+------------+
| | next-20250716 | f8c8dfd75d |
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------+------------+
| WARNING:possible_circular_locking_dependency_detected | 0 | 12 |
| WARNING:possible_circular_locking_dependency_detected_trinity-c3_is_trying_to_acquire_lock:at:__kmalloc_cache_noprof_but_task_is_already_holding_lock:at:vma_prepare | 0 | 5 |
| WARNING:possible_circular_locking_dependency_detected_trinity-c2_is_trying_to_acquire_lock:at:__kmalloc_cache_noprof_but_task_is_already_holding_lock:at:vma_prepare | 0 | 6 |
| WARNING:possible_circular_locking_dependency_detected_trinity-c0_is_trying_to_acquire_lock:at:__kmalloc_cache_noprof_but_task_is_already_holding_lock:at:vma_prepare | 0 | 1 |
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------+------------+
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/202507220857.ad1734da-lkp@intel.com
[ 43.204844][ T3677] WARNING: possible circular locking dependency detected
[ 43.205280][ T3677] 6.16.0-rc6-next-20250716-00001-gf8c8dfd75d35 #1 Not tainted
[ 43.205733][ T3677] ------------------------------------------------------
[ 43.206224][ T3677] trinity-c2/3677 is trying to acquire lock:
[ 43.206633][ T3677] b3177764 (fs_reclaim){+.+.}-{0:0}, at: __kmalloc_cache_noprof (include/linux/sched/mm.h:319 mm/slub.c:4131 mm/slub.c:4209 mm/slub.c:4391)
[ 43.207240][ T3677]
[ 43.207240][ T3677] but task is already holding lock:
[ 43.207683][ T3677] b53d3c48 (&mapping->i_mmap_rwsem){++++}-{4:4}, at: vma_prepare (mm/vma.c:296)
[ 43.208197][ T3677]
[ 43.208197][ T3677] which lock already depends on the new lock.
[ 43.208197][ T3677]
[ 43.208828][ T3677]
[ 43.208828][ T3677] the existing dependency chain (in reverse order) is:
[ 43.209373][ T3677]
[ 43.209373][ T3677] -> #1 (&mapping->i_mmap_rwsem){++++}-{4:4}:
[ 43.209866][ T3677] down_write (kernel/locking/rwsem.c:1592)
[ 43.210206][ T3677] dma_resv_lockdep (include/linux/fs.h:557 drivers/dma-buf/dma-resv.c:798)
[ 43.210581][ T3677] do_one_initcall (init/main.c:1269)
[ 43.210942][ T3677] do_initcall_level (init/main.c:1330 (discriminator 6))
[ 43.211305][ T3677] do_initcalls (init/main.c:1344 (discriminator 2))
[ 43.211628][ T3677] do_basic_setup (init/main.c:1367)
[ 43.211920][ T3677] kernel_init_freeable (init/main.c:1581)
[ 43.212238][ T3677] kernel_init (init/main.c:1471)
[ 43.212522][ T3677] ret_from_fork (arch/x86/kernel/process.c:154)
[ 43.212817][ T3677] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 43.213118][ T3677] restore_all_switch_stack (arch/x86/entry/entry_32.S:945)
[ 43.213451][ T3677]
[ 43.213451][ T3677] -> #0 (fs_reclaim){+.+.}-{0:0}:
[ 43.213866][ T3677] __lock_acquire (kernel/locking/lockdep.c:?)
[ 43.214233][ T3677] lock_acquire (kernel/locking/lockdep.c:5871)
[ 43.214557][ T3677] fs_reclaim_acquire (mm/page_alloc.c:4234 mm/page_alloc.c:4248)
[ 43.214911][ T3677] __kmalloc_cache_noprof (include/linux/sched/mm.h:319 mm/slub.c:4131 mm/slub.c:4209 mm/slub.c:4391)
[ 43.215287][ T3677] mas_wr_spanning_store (include/linux/slab.h:905 include/linux/slab.h:1039 lib/maple_tree.c:3801)
[ 43.215627][ T3677] mas_wr_store_entry (lib/maple_tree.c:?)
[ 43.215959][ T3677] mas_store_prealloc (include/linux/maple_tree.h:566 lib/maple_tree.c:5516)
[ 43.216270][ T3677] commit_merge (mm/vma.c:767)
[ 43.216555][ T3677] vma_modify (mm/vma.c:973 (discriminator 1))
[ 43.216831][ T3677] vma_modify_flags (mm/vma.c:?)
[ 43.217122][ T3677] madvise_walk_vmas (mm/madvise.c:168)
[ 43.217429][ T3677] madvise_do_behavior (mm/madvise.c:?)
[ 43.217748][ T3677] do_madvise (mm/madvise.c:1909)
[ 43.218086][ T3677] __ia32_sys_madvise (mm/madvise.c:1918 (discriminator 1) mm/madvise.c:1916 (discriminator 1) mm/madvise.c:1916 (discriminator 1))
[ 43.218546][ T3677] ia32_sys_call (arch/x86/entry/syscall_32.c:50 (discriminator 376832))
[ 43.219019][ T3677] do_int80_syscall_32 (arch/x86/entry/syscall_32.c:?)
[ 43.219532][ T3677] restore_all_switch_stack (arch/x86/entry/entry_32.S:945)
[ 43.220078][ T3677]
[ 43.220078][ T3677] other info that might help us debug this:
[ 43.220078][ T3677]
[ 43.221003][ T3677] Possible unsafe locking scenario:
[ 43.221003][ T3677]
[ 43.221674][ T3677] CPU0 CPU1
[ 43.222191][ T3677] ---- ----
[ 43.222699][ T3677] lock(&mapping->i_mmap_rwsem);
[ 43.223178][ T3677] lock(fs_reclaim);
[ 43.223787][ T3677] lock(&mapping->i_mmap_rwsem);
[ 43.224481][ T3677] lock(fs_reclaim);
[ 43.224863][ T3677]
[ 43.224863][ T3677] *** DEADLOCK ***
[ 43.224863][ T3677]
[ 43.225618][ T3677] 2 locks held by trinity-c2/3677:
[ 43.226112][ T3677] #0: b49a3800 (&mm->mmap_lock){++++}-{4:4}, at: madvise_lock (include/linux/mmap_lock.h:40)
[ 43.226906][ T3677] #1: b53d3c48 (&mapping->i_mmap_rwsem){++++}-{4:4}, at: vma_prepare (mm/vma.c:296)
[ 43.227744][ T3677]
[ 43.227744][ T3677] stack backtrace:
[ 43.228320][ T3677] CPU: 0 UID: 65534 PID: 3677 Comm: trinity-c2 Not tainted 6.16.0-rc6-next-20250716-00001-gf8c8dfd75d35 #1 PREEMPT(full)
[ 43.229467][ T3677] Call Trace:
[ 43.229791][ T3677] __dump_stack (lib/dump_stack.c:95)
[ 43.230220][ T3677] dump_stack_lvl (lib/dump_stack.c:123 (discriminator 2))
[ 43.230647][ T3677] dump_stack (lib/dump_stack.c:129)
[ 43.231038][ T3677] print_circular_bug (kernel/locking/lockdep.c:2048)
[ 43.231525][ T3677] check_noncircular (kernel/locking/lockdep.c:2178)
[ 43.231983][ T3677] __lock_acquire (kernel/locking/lockdep.c:?)
[ 43.232421][ T3677] ? rcu_lock_acquire (include/linux/rcupdate.h:340)
[ 43.232864][ T3677] lock_acquire (kernel/locking/lockdep.c:5871)
[ 43.233269][ T3677] ? __kmalloc_cache_noprof (include/linux/sched/mm.h:319 mm/slub.c:4131 mm/slub.c:4209 mm/slub.c:4391)
[ 43.233766][ T3677] ? local_clock_noinstr (kernel/sched/build_utility.c:304)
[ 43.234272][ T3677] fs_reclaim_acquire (mm/page_alloc.c:4234 mm/page_alloc.c:4248)
[ 43.234735][ T3677] ? __kmalloc_cache_noprof (include/linux/sched/mm.h:319 mm/slub.c:4131 mm/slub.c:4209 mm/slub.c:4391)
[ 43.235244][ T3677] __kmalloc_cache_noprof (include/linux/sched/mm.h:319 mm/slub.c:4131 mm/slub.c:4209 mm/slub.c:4391)
[ 43.235732][ T3677] ? mas_wr_spanning_store (include/linux/slab.h:905 include/linux/slab.h:1039 lib/maple_tree.c:3801)
[ 43.236247][ T3677] mas_wr_spanning_store (include/linux/slab.h:905 include/linux/slab.h:1039 lib/maple_tree.c:3801)
[ 43.236762][ T3677] mas_wr_store_entry (lib/maple_tree.c:?)
[ 43.237244][ T3677] ? local_clock_noinstr (kernel/sched/build_utility.c:304)
[ 43.237717][ T3677] ? local_clock_noinstr (kernel/sched/build_utility.c:304)
[ 43.238198][ T3677] ? __this_cpu_preempt_check (lib/smp_processor_id.c:65)
[ 43.238697][ T3677] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91)
[ 43.239169][ T3677] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:271)
[ 43.239640][ T3677] ? local_clock_noinstr (kernel/sched/build_utility.c:304)
[ 43.240126][ T3677] ? local_clock_noinstr (kernel/sched/build_utility.c:304)
[ 43.240615][ T3677] ? __lock_acquire (kernel/locking/lockdep.c:4677)
[ 43.241082][ T3677] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91)
[ 43.241559][ T3677] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91)
[ 43.242051][ T3677] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:271)
[ 43.242527][ T3677] ? local_clock_noinstr (kernel/sched/build_utility.c:304)
[ 43.243023][ T3677] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91)
[ 43.243505][ T3677] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:271)
[ 43.243982][ T3677] ? local_clock_noinstr (kernel/sched/build_utility.c:304)
[ 43.244467][ T3677] ? __lock_acquire (kernel/locking/lockdep.c:4677)
[ 43.244939][ T3677] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91)
[ 43.245416][ T3677] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:271)
[ 43.245907][ T3677] ? local_clock_noinstr (kernel/sched/build_utility.c:304)
[ 43.246271][ T3677] ? __lock_acquire (kernel/locking/lockdep.c:4677)
[ 43.246605][ T3677] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:271)
[ 43.246942][ T3677] ? local_clock_noinstr (kernel/sched/build_utility.c:304)
[ 43.247288][ T3677] ? __this_cpu_preempt_check (lib/smp_processor_id.c:65)
[ 43.247606][ T3677] ? kmem_cache_alloc_bulk_noprof (arch/x86/include/asm/irqflags.h:19 arch/x86/include/asm/irqflags.h:109 arch/x86/include/asm/irqflags.h:151 mm/slub.c:5349 mm/slub.c:5403)
[ 43.247962][ T3677] ? __this_cpu_preempt_check (lib/smp_processor_id.c:65)
[ 43.248278][ T3677] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475 (discriminator 5))
[ 43.248578][ T3677] ? kmem_cache_alloc_bulk_noprof (mm/slub.c:?)
[ 43.248927][ T3677] ? __this_cpu_preempt_check (lib/smp_processor_id.c:65)
[ 43.249241][ T3677] mas_store_prealloc (include/linux/maple_tree.h:566 lib/maple_tree.c:5516)
[ 43.249538][ T3677] commit_merge (mm/vma.c:767)
[ 43.249813][ T3677] vma_modify (mm/vma.c:973 (discriminator 1))
[ 43.250135][ T3677] vma_modify_flags (mm/vma.c:?)
[ 43.250442][ T3677] madvise_walk_vmas (mm/madvise.c:168)
[ 43.250767][ T3677] ? __this_cpu_preempt_check (lib/smp_processor_id.c:65)
[ 43.251146][ T3677] ? madvise_lock (include/linux/mmap_lock.h:40)
[ 43.251417][ T3677] madvise_do_behavior (mm/madvise.c:?)
[ 43.251704][ T3677] ? down_write_killable (kernel/locking/rwsem.c:?)
[ 43.252002][ T3677] do_madvise (mm/madvise.c:1909)
[ 43.252247][ T3677] __ia32_sys_madvise (mm/madvise.c:1918 (discriminator 1) mm/madvise.c:1916 (discriminator 1) mm/madvise.c:1916 (discriminator 1))
[ 43.252522][ T3677] ia32_sys_call (arch/x86/entry/syscall_32.c:50 (discriminator 376832))
[ 43.252782][ T3677] do_int80_syscall_32 (arch/x86/entry/syscall_32.c:?)
[ 43.253069][ T3677] ? entry_INT80_32 (arch/x86/entry/entry_32.S:945)
[ 43.253351][ T3677] entry_INT80_32 (arch/x86/entry/entry_32.S:945)
[ 43.253619][ T3677] EIP: 0xa7fd1092
[ 43.253844][ T3677] Code: 00 00 00 e9 90 ff ff ff ff a3 24 00 00 00 68 30 00 00 00 e9 80 ff ff ff ff a3 f8 ff ff ff 66 90 00 00 00 00 00 00 00 00 cd 80 <c3> 8d b4 26 00 00 00 00 8d b6 00 00 00 00 8b 1c 24 c3 8d b4 26 00
All code
========
0: 00 00 add %al,(%rax)
2: 00 e9 add %ch,%cl
4: 90 nop
5: ff (bad)
6: ff (bad)
7: ff (bad)
8: ff a3 24 00 00 00 jmp *0x24(%rbx)
e: 68 30 00 00 00 push $0x30
13: e9 80 ff ff ff jmp 0xffffffffffffff98
18: ff a3 f8 ff ff ff jmp *-0x8(%rbx)
1e: 66 90 xchg %ax,%ax
...
28: cd 80 int $0x80
2a:* c3 ret <-- trapping instruction
2b: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
32: 8d b6 00 00 00 00 lea 0x0(%rsi),%esi
38: 8b 1c 24 mov (%rsp),%ebx
3b: c3 ret
3c: 8d .byte 0x8d
3d: b4 26 mov $0x26,%ah
...
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250722/202507220857.ad1734da-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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