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================================================================== BUG: KCSAN: data-race in file_update_time / inode_update_timestamps write to 0xffff88811897c6c4 of 4 bytes by task 17627 on cpu 1: inode_set_mtime_to_ts include/linux/fs.h:1706 [inline] inode_update_timestamps+0x139/0x250 fs/inode.c:2022 generic_update_time fs/inode.c:2057 [inline] inode_update_time fs/inode.c:2077 [inline] __file_update_time fs/inode.c:2305 [inline] file_update_time+0x219/0x2b0 fs/inode.c:2335 fault_dirty_shared_page+0xd7/0x3b0 mm/memory.c:3329 do_shared_fault mm/memory.c:5610 [inline] do_fault mm/memory.c:5656 [inline] do_pte_missing mm/memory.c:4160 [inline] handle_pte_fault mm/memory.c:5997 [inline] __handle_mm_fault mm/memory.c:6140 [inline] handle_mm_fault+0x154c/0x2e80 mm/memory.c:6309 faultin_page mm/gup.c:1193 [inline] __get_user_pages+0xf4e/0x2340 mm/gup.c:1491 __get_user_pages_locked mm/gup.c:1757 [inline] faultin_page_range+0x352/0x5d0 mm/gup.c:1981 madvise_populate mm/madvise.c:965 [inline] madvise_do_behavior+0x10e/0x2530 mm/madvise.c:1693 do_madvise mm/madvise.c:1782 [inline] __do_sys_madvise mm/madvise.c:1790 [inline] __se_sys_madvise mm/madvise.c:1788 [inline] __x64_sys_madvise+0xcb/0x100 mm/madvise.c:1788 x64_sys_call+0x23b8/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:29 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff88811897c6c4 of 4 bytes by task 17628 on cpu 0: inode_get_mtime_nsec include/linux/fs.h:1692 [inline] inode_get_mtime include/linux/fs.h:1698 [inline] inode_needs_update_time fs/inode.c:2284 [inline] file_update_time+0x8b/0x2b0 fs/inode.c:2331 fault_dirty_shared_page+0xd7/0x3b0 mm/memory.c:3329 do_shared_fault mm/memory.c:5610 [inline] do_fault mm/memory.c:5656 [inline] do_pte_missing mm/memory.c:4160 [inline] handle_pte_fault mm/memory.c:5997 [inline] __handle_mm_fault mm/memory.c:6140 [inline] handle_mm_fault+0x154c/0x2e80 mm/memory.c:6309 faultin_page mm/gup.c:1193 [inline] __get_user_pages+0xf4e/0x2340 mm/gup.c:1491 __get_user_pages_locked mm/gup.c:1757 [inline] faultin_page_range+0x352/0x5d0 mm/gup.c:1981 madvise_populate mm/madvise.c:965 [inline] madvise_do_behavior+0x10e/0x2530 mm/madvise.c:1693 do_madvise mm/madvise.c:1782 [inline] __do_sys_madvise mm/madvise.c:1790 [inline] __se_sys_madvise mm/madvise.c:1788 [inline] __x64_sys_madvise+0xcb/0x100 mm/madvise.c:1788 x64_sys_call+0x23b8/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:29 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x236256a9 -> 0x23faed29 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 17628 Comm: syz.3.4930 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/04/08 16:35 | upstream | 0af2f6be1b42 | a775275d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in file_update_time / inode_update_timestamps |