=============================
WARNING: suspicious RCU usage
6.5.0-rc3-syzkaller #0 Not tainted
-----------------------------
lib/maple_tree.c:839 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
1 lock held by syz-executor.0/2795:
#0: ffff8881131be790 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:654 [inline]
#0: ffff8881131be790 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0xcc/0x470 mm/memory.c:5585
stack backtrace:
CPU: 0 PID: 2795 Comm: syz-executor.0 Not tainted 6.5.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x7e/0xb0 lib/dump_stack.c:106
lockdep_rcu_suspicious+0x158/0x1e0 kernel/locking/lockdep.c:6719
mas_root lib/maple_tree.c:839 [inline]
mas_root lib/maple_tree.c:837 [inline]
mas_start lib/maple_tree.c:1381 [inline]
mas_state_walk lib/maple_tree.c:3832 [inline]
mas_walk+0x19c/0x1f0 lib/maple_tree.c:4973
find_mergeable_anon_vma+0x6c/0x210 mm/mmap.c:1085
__anon_vma_prepare+0x43/0x1b0 mm/rmap.c:200
anon_vma_prepare include/linux/rmap.h:159 [inline]
wp_page_copy mm/memory.c:3202 [inline]
do_wp_page+0xb88/0x10e0 mm/memory.c:3579
handle_pte_fault mm/memory.c:5133 [inline]
__handle_mm_fault+0x3c1/0x3d0 mm/memory.c:5257
handle_mm_fault+0x111/0x280 mm/memory.c:5422
do_user_addr_fault arch/x86/mm/fault.c:1342 [inline]
handle_page_fault arch/x86/mm/fault.c:1483 [inline]
exc_page_fault+0x16f/0x920 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f7c96b5a361
Code: 48 8b 54 24 08 48 85 d2 74 17 8b 44 24 18 0f c8 89 c0 48 89 44 24 18 48 83 fa 01 0f 85 b3 01 00 00 48 8b 44 24 10 8b 54 24 18 <89> 10 e9 15 fd ff ff 48 8b 44 24 10 8b 10 48 8b 44 24 08 48 85 c0
RSP: 002b:00007ffeefc774a0 EFLAGS: 00010246
RAX: 0000000020000400 RBX: 0000000000000004 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000555555a81360
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffeefc77610 R11: 0000000000000246 R12: 00007f7c9672f158
R13: fffffffffffffffe R14: 00007f7c9672f000 R15: 00007f7c9672f160
=============================
WARNING: suspicious RCU usage
6.5.0-rc3-syzkaller #0 Not tainted
-----------------------------
lib/maple_tree.c:795 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
1 lock held by syz-executor.0/2795:
#0: ffff8881131be790 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:654 [inline]
#0: ffff8881131be790 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0xcc/0x470 mm/memory.c:5585
stack backtrace:
CPU: 0 PID: 2795 Comm: syz-executor.0 Not tainted 6.5.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x7e/0xb0 lib/dump_stack.c:106
lockdep_rcu_suspicious+0x158/0x1e0 kernel/locking/lockdep.c:6719
mt_slot lib/maple_tree.c:795 [inline]
mt_slot lib/maple_tree.c:792 [inline]
mtree_range_walk+0x249/0x290 lib/maple_tree.c:2946
mas_state_walk lib/maple_tree.c:3839 [inline]
mas_walk+0xfc/0x1f0 lib/maple_tree.c:4973
find_mergeable_anon_vma+0x6c/0x210 mm/mmap.c:1085
__anon_vma_prepare+0x43/0x1b0 mm/rmap.c:200
anon_vma_prepare include/linux/rmap.h:159 [inline]
wp_page_copy mm/memory.c:3202 [inline]
do_wp_page+0xb88/0x10e0 mm/memory.c:3579
handle_pte_fault mm/memory.c:5133 [inline]
__handle_mm_fault+0x3c1/0x3d0 mm/memory.c:5257
handle_mm_fault+0x111/0x280 mm/memory.c:5422
do_user_addr_fault arch/x86/mm/fault.c:1342 [inline]
handle_page_fault arch/x86/mm/fault.c:1483 [inline]
exc_page_fault+0x16f/0x920 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f7c96b5a361
Code: 48 8b 54 24 08 48 85 d2 74 17 8b 44 24 18 0f c8 89 c0 48 89 44 24 18 48 83 fa 01 0f 85 b3 01 00 00 48 8b 44 24 10 8b 54 24 18 <89> 10 e9 15 fd ff ff 48 8b 44 24 10 8b 10 48 8b 44 24 08 48 85 c0
RSP: 002b:00007ffeefc774a0 EFLAGS: 00010246
RAX: 0000000020000400 RBX: 0000000000000004 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000555555a81360
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffeefc77610 R11: 0000000000000246 R12: 00007f7c9672f158
R13: fffffffffffffffe R14: 00007f7c9672f000 R15: 00007f7c9672f160