Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KCSAN: data-race in vm_area_dup / vma_interval_tree_remove (2) mm | 70 | 1637d | 1750d | 15/28 | fixed on 2020/09/16 22:51 |
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================================================================== BUG: KCSAN: data-race in vm_area_dup / vma_interval_tree_remove read to 0xffff88811c628af0 of 200 bytes by task 9827 on cpu 1: vm_area_dup+0x70/0xf0 kernel/fork.c:350 __split_vma+0x88/0x350 mm/mmap.c:2663 split_vma+0x73/0xa0 mm/mmap.c:2721 mprotect_fixup+0x4bf/0x600 mm/mprotect.c:413 do_mprotect_pkey+0x3eb/0x660 mm/mprotect.c:557 __do_sys_mprotect mm/mprotect.c:582 [inline] __se_sys_mprotect mm/mprotect.c:579 [inline] __x64_sys_mprotect+0x51/0x70 mm/mprotect.c:579 do_syscall_64+0xcf/0x2f0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff88811c628b48 of 8 bytes by task 9825 on cpu 0: rb_set_parent include/linux/rbtree_augmented.h:113 [inline] __rb_erase_augmented include/linux/rbtree_augmented.h:233 [inline] rb_erase_augmented include/linux/rbtree_augmented.h:259 [inline] rb_erase_augmented_cached include/linux/rbtree_augmented.h:270 [inline] vma_interval_tree_remove+0x2ff/0x8b0 mm/interval_tree.c:23 __remove_shared_vm_struct+0xad/0xd0 mm/mmap.c:154 unlink_file_vma+0x69/0x90 mm/mmap.c:169 free_pgtables+0x14f/0x200 mm/memory.c:396 exit_mmap+0x151/0x300 mm/mmap.c:3146 __mmput kernel/fork.c:1064 [inline] mmput+0xea/0x280 kernel/fork.c:1085 exit_mm kernel/exit.c:547 [inline] do_exit+0x4ed/0x18e0 kernel/exit.c:866 do_group_exit+0xb4/0x1c0 kernel/exit.c:983 __do_sys_exit_group kernel/exit.c:994 [inline] __se_sys_exit_group kernel/exit.c:992 [inline] __x64_sys_exit_group+0x2e/0x30 kernel/exit.c:992 do_syscall_64+0xcf/0x2f0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 9825 Comm: blkid Not tainted 5.3.0+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/10/10 08:59 | https://github.com/google/ktsan.git kcsan | d724f94f63de | d52eff28 | .config | console log | report | ci2-upstream-kcsan-gce |