====================================================== WARNING: possible circular locking dependency detected 6.10.0-syzkaller-04559-g7d30b8aa4fc3 #0 Not tainted ------------------------------------------------------ modprobe/16137 is trying to acquire lock: ffff8880b9338798 (lock#10){+.+.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] ffff8880b9338798 (lock#10){+.+.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x8f/0x630 mm/mmap_lock.c:237 but task is already holding lock: ffff8880b933e858 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&rq->__lock){-.-.}-{2:2}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5753 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560 raw_spin_rq_lock kernel/sched/sched.h:1415 [inline] rq_lock kernel/sched/sched.h:1714 [inline] task_fork_fair+0x61/0x1e0 kernel/sched/fair.c:12710 sched_cgroup_fork+0x37c/0x410 kernel/sched/core.c:4633 copy_process+0x2217/0x3dc0 kernel/fork.c:2482 kernel_clone+0x226/0x8f0 kernel/fork.c:2780 user_mode_thread+0x132/0x1a0 kernel/fork.c:2858 rest_init+0x23/0x300 init/main.c:712 start_kernel+0x47a/0x500 init/main.c:1103 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x147 -> #1 (&p->pi_lock){-.-.}-{2:2}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5753 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline] try_to_wake_up+0xb0/0x1470 kernel/sched/core.c:4051 rcu_read_unlock_special+0x3db/0x550 kernel/rcu/tree_plugin.h:665 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:436 rcu_read_unlock include/linux/rcupdate.h:872 [inline] get_mem_cgroup_from_mm+0x1b2/0x2a0 mm/memcontrol.c:1271 get_mm_memcg_path+0x1b/0x600 mm/mmap_lock.c:202 __mmap_lock_do_trace_released+0x134/0x620 mm/mmap_lock.c:243 __mmap_lock_trace_released include/linux/mmap_lock.h:42 [inline] mmap_read_unlock include/linux/mmap_lock.h:170 [inline] __get_user_pages_locked mm/gup.c:1962 [inline] get_dump_page+0x2e4/0x2f0 mm/gup.c:2389 dump_user_range+0x14c/0x950 fs/coredump.c:952 elf_core_dump+0x3de6/0x4720 fs/binfmt_elf.c:2116 do_coredump+0x19e1/0x2940 fs/coredump.c:767 get_signal+0x13fa/0x1740 kernel/signal.c:2902 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] irqentry_exit_to_user_mode+0x79/0x280 kernel/entry/common.c:231 exc_page_fault+0x590/0x8c0 arch/x86/mm/fault.c:1542 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 -> #0 (lock#10){+.+.}-{2:2}: check_prev_add kernel/locking/lockdep.c:3133 [inline] check_prevs_add kernel/locking/lockdep.c:3252 [inline] validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3868 __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5136 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5753 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0xa8/0x630 mm/mmap_lock.c:237 __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline] mmap_read_trylock include/linux/mmap_lock.h:164 [inline] stack_map_get_build_id_offset+0x9af/0x9d0 kernel/bpf/stackmap.c:141 __bpf_get_stack+0x4ad/0x5a0 kernel/bpf/stackmap.c:449 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1997 [inline] bpf_get_stack_raw_tp+0x1a3/0x240 kernel/trace/bpf_trace.c:1987 bpf_prog_ec3b2eefa702d8d3+0x43/0x47 bpf_dispatcher_nop_func include/linux/bpf.h:1252 [inline] __bpf_prog_run include/linux/filter.h:691 [inline] bpf_prog_run include/linux/filter.h:698 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline] bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2447 __traceiter_tlb_flush+0x77/0xd0 include/trace/events/tlb.h:38 trace_tlb_flush+0x118/0x140 include/trace/events/tlb.h:38 switch_mm_irqs_off+0x7cb/0xae0 context_switch kernel/sched/core.c:5172 [inline] __schedule+0x1079/0x4a60 kernel/sched/core.c:6529 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x130/0x140 kernel/locking/spinlock.c:194 debug_object_activate+0x3e4/0x510 lib/debugobjects.c:727 debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline] __call_rcu_common kernel/rcu/tree.c:3091 [inline] call_rcu+0x97/0xa70 kernel/rcu/tree.c:3210 mas_wr_node_store lib/maple_tree.c:3956 [inline] mas_wr_modify+0x20fc/0x2830 lib/maple_tree.c:4189 mas_store_prealloc+0x278/0x5f0 lib/maple_tree.c:5485 vma_complete+0x21d/0xb60 mm/mmap.c:535 __split_vma+0xaca/0xc30 mm/mmap.c:2440 split_vma mm/mmap.c:2466 [inline] vma_modify+0x268/0x350 mm/mmap.c:2507 vma_modify_flags include/linux/mm.h:3352 [inline] mprotect_fixup+0x3ea/0xa90 mm/mprotect.c:637 do_mprotect_pkey+0x908/0xe00 mm/mprotect.c:820 __do_sys_mprotect mm/mprotect.c:841 [inline] __se_sys_mprotect mm/mprotect.c:838 [inline] __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:838 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: lock#10 --> &p->pi_lock --> &rq->__lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&rq->__lock); lock(&p->pi_lock); lock(&rq->__lock); lock(lock#10); *** DEADLOCK *** 5 locks held by modprobe/16137: #0: ffff88807b987398 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline] #0: ffff88807b987398 (&mm->mmap_lock){++++}-{3:3}, at: do_mprotect_pkey+0x20e/0xe00 mm/mprotect.c:713 #1: ffff88802a2c6a78 (&mapping->i_mmap_rwsem){++++}-{3:3}, at: i_mmap_lock_write include/linux/fs.h:507 [inline] #1: ffff88802a2c6a78 (&mapping->i_mmap_rwsem){++++}-{3:3}, at: vma_prepare+0x13e/0x4c0 mm/mmap.c:476 #2: ffff88802dd97298 (&anon_vma->rwsem){++++}-{3:3}, at: anon_vma_lock_write include/linux/rmap.h:121 [inline] #2: ffff88802dd97298 (&anon_vma->rwsem){++++}-{3:3}, at: vma_prepare+0x26f/0x4c0 mm/mmap.c:490 #3: ffff8880b933e858 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560 #4: ffffffff8e735fe0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:327 [inline] #4: ffffffff8e735fe0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:839 [inline] #4: ffffffff8e735fe0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2405 [inline] #4: ffffffff8e735fe0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x1fc/0x540 kernel/trace/bpf_trace.c:2447 stack backtrace: CPU: 1 PID: 16137 Comm: modprobe Not tainted 6.10.0-syzkaller-04559-g7d30b8aa4fc3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2186 check_prev_add kernel/locking/lockdep.c:3133 [inline] check_prevs_add kernel/locking/lockdep.c:3252 [inline] validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3868 __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5136 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5753 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0xa8/0x630 mm/mmap_lock.c:237 __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline] mmap_read_trylock include/linux/mmap_lock.h:164 [inline] stack_map_get_build_id_offset+0x9af/0x9d0 kernel/bpf/stackmap.c:141 __bpf_get_stack+0x4ad/0x5a0 kernel/bpf/stackmap.c:449 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1997 [inline] bpf_get_stack_raw_tp+0x1a3/0x240 kernel/trace/bpf_trace.c:1987 bpf_prog_ec3b2eefa702d8d3+0x43/0x47 bpf_dispatcher_nop_func include/linux/bpf.h:1252 [inline] __bpf_prog_run include/linux/filter.h:691 [inline] bpf_prog_run include/linux/filter.h:698 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline] bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2447 __traceiter_tlb_flush+0x77/0xd0 include/trace/events/tlb.h:38 trace_tlb_flush+0x118/0x140 include/trace/events/tlb.h:38 switch_mm_irqs_off+0x7cb/0xae0 context_switch kernel/sched/core.c:5172 [inline] __schedule+0x1079/0x4a60 kernel/sched/core.c:6529 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x130/0x140 kernel/locking/spinlock.c:194 debug_object_activate+0x3e4/0x510 lib/debugobjects.c:727 debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline] __call_rcu_common kernel/rcu/tree.c:3091 [inline] call_rcu+0x97/0xa70 kernel/rcu/tree.c:3210 mas_wr_node_store lib/maple_tree.c:3956 [inline] mas_wr_modify+0x20fc/0x2830 lib/maple_tree.c:4189 mas_store_prealloc+0x278/0x5f0 lib/maple_tree.c:5485 vma_complete+0x21d/0xb60 mm/mmap.c:535 __split_vma+0xaca/0xc30 mm/mmap.c:2440 split_vma mm/mmap.c:2466 [inline] vma_modify+0x268/0x350 mm/mmap.c:2507 vma_modify_flags include/linux/mm.h:3352 [inline] mprotect_fixup+0x3ea/0xa90 mm/mprotect.c:637 do_mprotect_pkey+0x908/0xe00 mm/mprotect.c:820 __do_sys_mprotect mm/mprotect.c:841 [inline] __se_sys_mprotect mm/mprotect.c:838 [inline] __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:838 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2bfd425bb7 Code: Unable to access opcode bytes at 0x7f2bfd425b8d. RSP: 002b:00007ffea1a79e68 EFLAGS: 00000206 ORIG_RAX: 000000000000000a RAX: ffffffffffffffda RBX: 00007f2bfd4025c0 RCX: 00007f2bfd425bb7 RDX: 0000000000000001 RSI: 0000000000004000 RDI: 00007f2bfd32c000 RBP: 00007ffea1a79f80 R08: 00007ffea1a70000 R09: 00007f2bfd439ab0 R10: 00007f2bfd192ab8 R11: 0000000000000206 R12: 00007f2bfd4025c0 R13: 00007f2bfd42deda R14: 00007f2bfd32fbf8 R15: 00007f2bfd32fb70