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================================================================== BUG: KCSAN: data-race in mtree_range_walk / rcu_segcblist_enqueue write to 0xffff888104b5eb08 of 8 bytes by task 30520 on cpu 1: rcu_segcblist_enqueue+0x67/0xb0 kernel/rcu/rcu_segcblist.c:334 rcutree_enqueue kernel/rcu/tree.c:2954 [inline] call_rcu_core kernel/rcu/tree.c:2971 [inline] __call_rcu_common kernel/rcu/tree.c:3107 [inline] call_rcu+0x1bd/0x430 kernel/rcu/tree.c:3190 ma_free_rcu lib/maple_tree.c:211 [inline] mas_free lib/maple_tree.c:1317 [inline] mas_replace_node+0x2fa/0x430 lib/maple_tree.c:1754 mas_wr_node_store lib/maple_tree.c:3878 [inline] mas_wr_store_entry+0x1fbf/0x2d10 lib/maple_tree.c:4098 mas_store_prealloc+0x6bf/0x960 lib/maple_tree.c:5520 vma_iter_store mm/vma.h:387 [inline] vma_complete+0x3a7/0x760 mm/vma.c:277 __split_vma+0x5d6/0x6a0 mm/vma.c:480 split_vma mm/vma.c:510 [inline] vma_modify+0xd3/0x1e0 mm/vma.c:1520 vma_modify_flags+0xf1/0x120 mm/vma.c:1546 mprotect_fixup+0x31a/0x5e0 mm/mprotect.c:666 do_mprotect_pkey+0x653/0x960 mm/mprotect.c:840 __do_sys_mprotect mm/mprotect.c:861 [inline] __se_sys_mprotect mm/mprotect.c:858 [inline] __x64_sys_mprotect+0x48/0x60 mm/mprotect.c:858 x64_sys_call+0x2770/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:11 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888104b5eb08 of 8 bytes by task 30522 on cpu 0: mtree_range_walk+0x140/0x460 lib/maple_tree.c:2784 mas_state_walk lib/maple_tree.c:3620 [inline] mas_walk+0x16e/0x320 lib/maple_tree.c:4947 lock_vma_under_rcu+0x95/0x260 mm/memory.c:6274 do_user_addr_fault arch/x86/mm/fault.c:1329 [inline] handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x150/0x650 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 30522 Comm: syz.4.8653 Not tainted 6.13.0-rc6-syzkaller-00262-gb62cef9a5c67 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/01/12 06:33 | upstream | b62cef9a5c67 | 6dbc6a9b | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in mtree_range_walk / rcu_segcblist_enqueue | ||
2024/12/20 03:21 | upstream | baaa2567a712 | 5905cb39 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in mtree_range_walk / rcu_segcblist_enqueue |