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================================================================== BUG: KCSAN: data-race in filemap_fault / generic_write_end write to 0xffff888109e18800 of 8 bytes by task 5510 on cpu 1: i_size_write include/linux/fs.h:905 [inline] generic_write_end+0xb4/0x360 fs/buffer.c:2241 ext4_da_write_end+0x4df/0x690 fs/ext4/inode.c:3010 generic_perform_write+0x253/0x3d0 mm/filemap.c:3934 ext4_buffered_write_iter+0x234/0x3e0 fs/ext4/file.c:289 ext4_file_write_iter+0xd7/0x10e0 call_write_iter include/linux/fs.h:1868 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x47b/0x780 fs/read_write.c:584 ksys_write+0xeb/0x1a0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:646 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 read to 0xffff888109e18800 of 8 bytes by task 5520 on cpu 0: i_size_read include/linux/fs.h:883 [inline] filemap_fault+0x94/0xb70 mm/filemap.c:3255 __do_fault mm/memory.c:4176 [inline] do_cow_fault mm/memory.c:4560 [inline] do_fault mm/memory.c:4661 [inline] do_pte_missing mm/memory.c:3647 [inline] handle_pte_fault mm/memory.c:4947 [inline] __handle_mm_fault mm/memory.c:5089 [inline] handle_mm_fault+0x1b38/0x2c60 mm/memory.c:5243 faultin_page mm/gup.c:925 [inline] __get_user_pages+0x363/0xc30 mm/gup.c:1147 populate_vma_page_range mm/gup.c:1543 [inline] __mm_populate+0x23d/0x370 mm/gup.c:1652 mm_populate include/linux/mm.h:3153 [inline] vm_mmap_pgoff+0x1a3/0x240 mm/util.c:548 ksys_mmap_pgoff+0x2ac/0x320 mm/mmap.c:1440 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: 0x0000000000fdb000 -> 0x0000000000fdc000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 5520 Comm: syz-executor.5 Not tainted 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/05/08 19:53 | upstream | ba0ad6ed89fd | c7a5e2a0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in filemap_fault / generic_write_end | ||
2023/05/07 02:48 | upstream | fc4354c6e5c2 | 90c93c40 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in filemap_fault / generic_write_end | ||
2023/05/06 09:55 | upstream | 2e1e1337881b | de870ca5 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in filemap_fault / generic_write_end |