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================================================================== BUG: KCSAN: data-race in xas_clear_mark / xas_find_marked read to 0xffff888125e0e8f0 of 8 bytes by task 7325 on cpu 0: xas_find_chunk include/linux/xarray.h:1590 [inline] xas_find_marked+0x17a/0x7b0 lib/xarray.c:1187 find_get_pages_range_tag+0x111/0x670 mm/filemap.c:1924 pagevec_lookup_range_tag+0x45/0x70 mm/swap.c:1054 __filemap_fdatawait_range+0xdc/0x1d0 mm/filemap.c:517 file_write_and_wait_range+0x134/0x160 mm/filemap.c:785 __generic_file_fsync+0x59/0x190 fs/libfs.c:1000 ext4_sync_file+0x48e/0xb00 fs/ext4/fsync.c:120 vfs_fsync_range+0x82/0x150 fs/sync.c:197 generic_write_sync include/linux/fs.h:2853 [inline] ext4_file_write_iter+0x45b/0xa00 fs/ext4/file.c:279 call_write_iter include/linux/fs.h:1895 [inline] new_sync_write+0x388/0x4a0 fs/read_write.c:483 __vfs_write+0xb1/0xc0 fs/read_write.c:496 vfs_write fs/read_write.c:558 [inline] vfs_write+0x18a/0x390 fs/read_write.c:542 ksys_write+0xd5/0x1b0 fs/read_write.c:611 __do_sys_write fs/read_write.c:623 [inline] __se_sys_write fs/read_write.c:620 [inline] __x64_sys_write+0x4c/0x60 fs/read_write.c:620 write to 0xffff888125e0e8f0 of 8 bytes by interrupt on cpu 1: __test_and_clear_bit include/asm-generic/bitops-instrumented.h:213 [inline] node_clear_mark lib/xarray.c:99 [inline] xas_clear_mark+0x146/0x1d0 lib/xarray.c:907 __xa_clear_mark+0xd3/0x100 lib/xarray.c:1713 test_clear_page_writeback+0x449/0x790 mm/page-writeback.c:2731 end_page_writeback+0x9e/0x190 mm/filemap.c:1338 ext4_finish_bio+0x40d/0x520 fs/ext4/page-io.c:110 ext4_end_bio+0xd2/0x310 fs/ext4/page-io.c:334 bio_endio+0x3a8/0x4f0 block/bio.c:1818 req_bio_endio block/blk-core.c:242 [inline] blk_update_request+0x427/0x7b0 block/blk-core.c:1462 scsi_end_request+0x6b/0x3e0 drivers/scsi/scsi_lib.c:579 scsi_io_completion+0x11d/0xc80 drivers/scsi/scsi_lib.c:963 scsi_finish_command+0x280/0x380 drivers/scsi/scsi.c:228 scsi_softirq_done+0x259/0x280 drivers/scsi/scsi_lib.c:1477 blk_done_softirq+0x1eb/0x250 block/blk-softirq.c:37 __do_softirq+0x115/0x33f kernel/softirq.c:292 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 3006 Comm: kworker/1:2 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events linkwatch_event ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/10/17 18:32 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | 8c88c9c1 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/13 10:34 | https://github.com/google/ktsan.git kcsan | d724f94f63de | 2f661ec4 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/11 16:17 | https://github.com/google/ktsan.git kcsan | d724f94f63de | 426631dd | .config | console log | report | ci2-upstream-kcsan-gce |