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================================================================== BUG: KCSAN: data-race in __anon_vma_prepare / do_wp_page write to 0xffff888162f87c40 of 8 bytes by task 30946 on cpu 1: __anon_vma_prepare+0x147/0x2b0 mm/rmap.c:214 anon_vma_prepare include/linux/rmap.h:159 [inline] wp_page_copy mm/memory.c:3066 [inline] do_wp_page+0x1554/0x1ee0 mm/memory.c:3449 handle_pte_fault mm/memory.c:4994 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0xe2a/0x2cc0 mm/memory.c:5284 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2f7/0x6c0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 read to 0xffff888162f87c40 of 8 bytes by task 30950 on cpu 0: anon_vma_prepare include/linux/rmap.h:156 [inline] wp_page_copy mm/memory.c:3066 [inline] do_wp_page+0x5c8/0x1ee0 mm/memory.c:3449 handle_pte_fault mm/memory.c:4994 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0xe2a/0x2cc0 mm/memory.c:5284 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2f7/0x6c0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 __put_user_8+0x11/0x20 arch/x86/lib/putuser.S:106 __do_sys_io_setup fs/aio.c:1351 [inline] __se_sys_io_setup+0x95/0x1b0 fs/aio.c:1331 __x64_sys_io_setup+0x31/0x40 fs/aio.c:1331 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x0000000000000000 -> 0xffff888103fbabc8 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 30950 Comm: syz-executor.0 Not tainted 6.6.0-rc3-syzkaller-00044-g633b47cb009d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/09/28 18:03 | upstream | 633b47cb009d | d265efd8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __anon_vma_prepare / do_wp_page |