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================================================================== BUG: KCSAN: data-race in mark_buffer_dirty_inode / sync_mapping_buffers write to 0xffff88810d98c948 of 8 bytes by task 14812 on cpu 0: __remove_assoc_queue fs/buffer.c:481 [inline] fsync_buffers_list fs/buffer.c:713 [inline] sync_mapping_buffers+0x155/0x7d0 fs/buffer.c:548 ext4_fsync_nojournal fs/ext4/fsync.c:86 [inline] ext4_sync_file+0x286/0x6c0 fs/ext4/fsync.c:170 vfs_fsync_range+0x107/0x120 fs/sync.c:200 generic_write_sync include/linux/fs.h:2737 [inline] ext4_buffered_write_iter+0x384/0x3d0 fs/ext4/file.c:278 ext4_file_write_iter+0x45e/0x1090 fs/ext4/file.c:503 call_write_iter include/linux/fs.h:1901 [inline] do_iter_readv_writev+0x2cb/0x360 fs/read_write.c:740 do_iter_write+0x112/0x4b0 fs/read_write.c:866 vfs_iter_write+0x4c/0x70 fs/read_write.c:907 iter_file_splice_write+0x42a/0x780 fs/splice.c:686 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0x80/0xa0 fs/splice.c:933 splice_direct_to_actor+0x345/0x650 fs/splice.c:888 do_splice_direct+0xf5/0x170 fs/splice.c:976 do_sendfile+0x5db/0xca0 fs/read_write.c:1257 __do_sys_sendfile64 fs/read_write.c:1312 [inline] __se_sys_sendfile64 fs/read_write.c:1304 [inline] __x64_sys_sendfile64+0xa9/0x130 fs/read_write.c:1304 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88810d98c948 of 8 bytes by task 14804 on cpu 1: mark_buffer_dirty_inode+0x92/0x1b0 fs/buffer.c:581 __ext4_handle_dirty_metadata+0x1af/0x590 fs/ext4/ext4_jbd2.c:360 __ext4_ext_dirty fs/ext4/extents.c:165 [inline] ext4_ext_insert_extent+0x1c75/0x2b50 fs/ext4/extents.c:2130 ext4_ext_map_blocks+0x16a3/0x1fc0 fs/ext4/extents.c:4259 ext4_map_blocks+0x700/0xfc0 fs/ext4/inode.c:628 ext4_iomap_alloc fs/ext4/inode.c:3418 [inline] ext4_iomap_begin+0x503/0x690 fs/ext4/inode.c:3468 iomap_apply+0x8d/0x4a0 fs/iomap/apply.c:46 __iomap_dio_rw+0x448/0x9b0 fs/iomap/direct-io.c:517 iomap_dio_rw+0x30/0x70 fs/iomap/direct-io.c:605 ext4_dio_write_iter fs/ext4/file.c:552 [inline] ext4_file_write_iter+0xe06/0x1090 fs/ext4/file.c:662 call_write_iter include/linux/fs.h:1901 [inline] do_iter_readv_writev+0x2cb/0x360 fs/read_write.c:740 do_iter_write+0x112/0x4b0 fs/read_write.c:866 vfs_iter_write+0x4c/0x70 fs/read_write.c:907 iter_file_splice_write+0x42a/0x780 fs/splice.c:686 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0x80/0xa0 fs/splice.c:933 splice_direct_to_actor+0x345/0x650 fs/splice.c:888 do_splice_direct+0xf5/0x170 fs/splice.c:976 do_sendfile+0x5db/0xca0 fs/read_write.c:1257 __do_sys_sendfile64 fs/read_write.c:1318 [inline] __se_sys_sendfile64 fs/read_write.c:1304 [inline] __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1304 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 14804 Comm: syz-executor.3 Not tainted 5.10.0-syzkaller #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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/12/19 11:44 | upstream | 3644e2d2dda7 | 04201c06 | .config | console log | report | info | ci2-upstream-kcsan-gce | ||||
2020/12/08 09:45 | upstream | cd796ed33450 | 9af51e31 | .config | console log | report | info | ci2-upstream-kcsan-gce | ||||
2020/12/07 22:43 | upstream | cd796ed33450 | 51a9082e | .config | console log | report | info | ci2-upstream-kcsan-gce | ||||
2020/12/01 10:01 | upstream | b65054597872 | b3a34598 | .config | console log | report | info | ci2-upstream-kcsan-gce | ||||
2020/11/05 18:31 | upstream | 4ef8451b3326 | cba33199 | .config | console log | report | info | ci2-upstream-kcsan-gce |