syzbot |
sign-in | mailing list | source | docs |
================================================================== BUG: KCSAN: data-race in mtree_range_walk / rcu_segcblist_enqueue write to 0xffff888103e5b508 of 8 bytes by task 11356 on cpu 1: rcu_segcblist_enqueue+0x67/0xb0 kernel/rcu/rcu_segcblist.c:345 rcutree_enqueue kernel/rcu/tree.c:2602 [inline] call_rcu_core kernel/rcu/tree.c:2619 [inline] __call_rcu_common kernel/rcu/tree.c:2755 [inline] call_rcu+0x1bd/0x430 kernel/rcu/tree.c:2838 ma_free_rcu lib/maple_tree.c:197 [inline] mas_free lib/maple_tree.c:1304 [inline] mas_replace_node+0x2f8/0x440 lib/maple_tree.c:1741 mas_wr_node_store lib/maple_tree.c:3958 [inline] mas_wr_modify+0x2bc3/0x3c90 lib/maple_tree.c:4191 mas_wr_store_entry+0x250/0x390 lib/maple_tree.c:4231 mas_store_prealloc+0x151/0x2b0 lib/maple_tree.c:5487 vma_iter_store mm/internal.h:1185 [inline] vma_complete+0x3a7/0x760 mm/mmap.c:532 __split_vma+0x58d/0x610 mm/mmap.c:2389 split_vma mm/mmap.c:2415 [inline] vma_modify+0x156/0x240 mm/mmap.c:2450 vma_modify_flags include/linux/mm.h:3283 [inline] mprotect_fixup+0x325/0x5c0 mm/mprotect.c:635 do_mprotect_pkey+0x655/0x940 mm/mprotect.c:809 __do_sys_mprotect mm/mprotect.c:830 [inline] __se_sys_mprotect mm/mprotect.c:827 [inline] __x64_sys_mprotect+0x48/0x60 mm/mprotect.c:827 do_syscall_64+0xd3/0x1d0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 read to 0xffff888103e5b508 of 8 bytes by task 11360 on cpu 0: mtree_range_walk+0x2a3/0x460 lib/maple_tree.c:2791 mas_state_walk lib/maple_tree.c:3680 [inline] mas_walk+0x16e/0x320 lib/maple_tree.c:4911 lock_vma_under_rcu+0x84/0x2a0 mm/memory.c:5622 do_user_addr_fault arch/x86/mm/fault.c:1354 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x161/0x6d0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 value changed: 0x0000000000000000 -> 0xffff888103e5b408 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 11360 Comm: syz-executor.1 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/03/15 00:02 | upstream | fe46a7dd189e | d615901c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in mtree_range_walk / rcu_segcblist_enqueue | ||
2024/02/23 01:18 | upstream | 1c892cdd8fe0 | 8d446f15 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in mtree_range_walk / rcu_segcblist_enqueue | ||
2024/02/10 12:26 | upstream | 4a7bbe7519b6 | 77b23aa1 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in mtree_range_walk / rcu_segcblist_enqueue |