syzbot |
sign-in | mailing list | source | docs |
================================================================== BUG: KCSAN: data-race in __mpage_writepage / generic_write_end write to 0xffff888122b3e738 of 8 bytes by task 6929 on cpu 1: i_size_write include/linux/fs.h:878 [inline] generic_write_end+0x98/0x230 fs/buffer.c:2183 fat_write_end+0x4a/0x150 fs/fat/inode.c:249 generic_perform_write+0x26a/0x3f0 mm/filemap.c:3798 __generic_file_write_iter+0xe3/0x280 mm/filemap.c:3915 generic_file_write_iter+0x75/0x130 mm/filemap.c:3947 do_iter_readv_writev+0x27b/0x300 do_iter_write+0x16f/0x5c0 fs/read_write.c:852 vfs_iter_write+0x4c/0x70 fs/read_write.c:893 iter_file_splice_write+0x44a/0x7c0 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0x80/0xa0 fs/splice.c:936 splice_direct_to_actor+0x345/0x660 fs/splice.c:891 do_splice_direct+0xfb/0x180 fs/splice.c:979 do_sendfile+0x3ad/0x900 fs/read_write.c:1246 __do_sys_sendfile64 fs/read_write.c:1311 [inline] __se_sys_sendfile64 fs/read_write.c:1297 [inline] __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1297 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888122b3e738 of 8 bytes by task 6922 on cpu 0: i_size_read include/linux/fs.h:856 [inline] __mpage_writepage+0xb8/0x1030 fs/mpage.c:466 write_cache_pages+0x443/0xa30 mm/page-writeback.c:2243 mpage_writepages+0x7b/0x100 fs/mpage.c:676 fat_writepages+0x20/0x30 fs/fat/inode.c:205 do_writepages+0x1db/0x350 mm/page-writeback.c:2352 filemap_fdatawrite_wbc+0xd6/0xf0 mm/filemap.c:388 __filemap_fdatawrite_range mm/filemap.c:421 [inline] filemap_write_and_wait_range+0xbf/0x2e0 mm/filemap.c:673 generic_file_read_iter+0xff/0x320 mm/filemap.c:2793 call_read_iter include/linux/fs.h:2044 [inline] generic_file_splice_read+0x1de/0x2c0 fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_direct_to_actor+0x2ac/0x660 fs/splice.c:870 do_splice_direct+0xfb/0x180 fs/splice.c:979 do_sendfile+0x3ad/0x900 fs/read_write.c:1246 __do_sys_sendfile64 fs/read_write.c:1311 [inline] __se_sys_sendfile64 fs/read_write.c:1297 [inline] __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1297 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x0000000000020400 -> 0x0000000000021000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6922 Comm: syz-executor.2 Not tainted 5.18.0-rc5-syzkaller-00178-g30c8e80f7932-dirty #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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2022/05/07 23:16 | upstream | 30c8e80f7932 | e60b1103 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in __mpage_writepage / generic_write_end |