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================================================================== BUG: KCSAN: data-race in __filemap_remove_folio / file_write_and_wait_range read-write to 0xffff888166fc6890 of 8 bytes by task 32508 on cpu 0: page_cache_delete mm/filemap.c:147 [inline] __filemap_remove_folio+0x224/0x320 mm/filemap.c:225 invalidate_complete_folio2 mm/truncate.c:587 [inline] invalidate_inode_pages2_range+0x506/0x790 mm/truncate.c:674 generic_file_direct_write+0x208/0x400 mm/filemap.c:3841 __generic_file_write_iter+0x122/0x290 mm/filemap.c:4013 generic_file_write_iter+0x7d/0x1c0 mm/filemap.c:4089 do_iter_write+0x4ae/0x770 fs/read_write.c:860 vfs_iter_write+0x50/0x70 fs/read_write.c:901 iter_file_splice_write+0x456/0x7d0 fs/splice.c:795 do_splice_from fs/splice.c:873 [inline] direct_splice_actor+0x84/0xa0 fs/splice.c:1039 splice_direct_to_actor+0x2ee/0x5f0 fs/splice.c:994 do_splice_direct+0x104/0x180 fs/splice.c:1082 do_sendfile+0x3b8/0x950 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1308 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 0xffff888166fc6890 of 8 bytes by task 32490 on cpu 1: mapping_needs_writeback mm/filemap.c:628 [inline] file_write_and_wait_range+0x6a/0x190 mm/filemap.c:780 __generic_file_fsync+0x4c/0x140 fs/libfs.c:1127 fat_file_fsync+0x4c/0x100 fs/fat/file.c:191 vfs_fsync_range+0x10b/0x120 fs/sync.c:188 generic_write_sync include/linux/fs.h:2469 [inline] generic_file_write_iter+0x191/0x1c0 mm/filemap.c:4093 do_iter_write+0x4ae/0x770 fs/read_write.c:860 vfs_iter_write+0x50/0x70 fs/read_write.c:901 iter_file_splice_write+0x456/0x7d0 fs/splice.c:795 do_splice_from fs/splice.c:873 [inline] direct_splice_actor+0x84/0xa0 fs/splice.c:1039 splice_direct_to_actor+0x2ee/0x5f0 fs/splice.c:994 do_splice_direct+0x104/0x180 fs/splice.c:1082 do_sendfile+0x3b8/0x950 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1308 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: 0x0000000000000254 -> 0x0000000000000245 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 32490 Comm: syz-executor.4 Not tainted 6.4.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/06/19 21:46 | upstream | 45a3e24f65e9 | d521bc56 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __filemap_remove_folio / file_write_and_wait_range | ||
2023/06/18 22:00 | upstream | 8c1f0c38b310 | f3921d4d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __filemap_remove_folio / file_write_and_wait_range | ||
2023/06/17 14:50 | upstream | 1639fae5132b | f3921d4d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __filemap_remove_folio / file_write_and_wait_range | ||
2023/06/05 06:14 | upstream | 9561de3a55be | a4ae4f42 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in __filemap_remove_folio / file_write_and_wait_range |