syzbot |
sign-in | mailing list | source | docs |
🐞 Open [1030] ≡ Subsystems 🐞 Fixed [5279] 🐞 Invalid [12607] ⬇ Missing Backports [86] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes | 💬 Send us feedback |
================================================================== BUG: KCSAN: data-race in fprop_fraction_percpu / percpu_counter_add_batch read to 0xffffffff86253030 of 8 bytes by task 22244 on cpu 0: fprop_fraction_percpu+0x9c/0x1c0 lib/flex_proportions.c:238 __wb_calc_thresh+0x6f/0x250 mm/page-writeback.c:775 wb_calc_thresh+0x96/0xc0 mm/page-writeback.c:795 wb_over_bg_thresh+0x287/0x490 mm/page-writeback.c:1949 wb_check_background_flush fs/fs-writeback.c:1952 [inline] wb_do_writeback fs/fs-writeback.c:2050 [inline] wb_workfn+0x3b3/0x970 fs/fs-writeback.c:2078 process_one_work+0x3d4/0x890 kernel/workqueue.c:2264 worker_thread+0xa0/0x800 kernel/workqueue.c:2410 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 write to 0xffffffff86253030 of 8 bytes by interrupt on cpu 1: percpu_counter_add_batch+0xca/0x150 lib/percpu_counter.c:91 percpu_counter_add include/linux/percpu_counter.h:55 [inline] __fprop_inc_percpu_max+0xb9/0x150 lib/flex_proportions.c:272 wb_domain_writeout_inc mm/page-writeback.c:581 [inline] __wb_writeout_inc mm/page-writeback.c:605 [inline] test_clear_page_writeback+0x543/0x790 mm/page-writeback.c:2737 end_page_writeback+0x9e/0x190 mm/filemap.c:1339 ext4_finish_bio+0x40d/0x520 fs/ext4/page-io.c:148 ext4_end_bio+0xd2/0x2f0 fs/ext4/page-io.c:370 bio_endio+0x2fa/0x400 block/bio.c:1821 req_bio_endio block/blk-core.c:245 [inline] blk_update_request+0x427/0x7b0 block/blk-core.c:1464 scsi_end_request+0x6b/0x360 drivers/scsi/scsi_lib.c:576 scsi_io_completion+0x11d/0xc80 drivers/scsi/scsi_lib.c:960 scsi_finish_command+0x283/0x380 drivers/scsi/scsi.c:228 scsi_softirq_done+0x259/0x280 drivers/scsi/scsi_lib.c:1476 blk_done_softirq+0x1eb/0x250 block/blk-softirq.c:37 __do_softirq+0x115/0x33f kernel/softirq.c:292 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.5.0-rc1-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/01/29 17:43 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 5ed23f9a | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/17 23:14 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 3de7aabb | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/03 14:42 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 9dcc1191 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/28 20:47 | https://github.com/google/ktsan.git kcsan | 245a43005292 | af6b8ef8 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/21 10:56 | https://github.com/google/ktsan.git kcsan | 245a43005292 | bc586918 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/17 08:06 | https://github.com/google/ktsan.git kcsan | 245a43005292 | d13d7958 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/15 07:35 | https://github.com/google/ktsan.git kcsan | 245a43005292 | eef6e580 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/04 14:25 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | b2088328 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/03 02:43 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | ab342da3 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/29 05:45 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 76357d6f | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/28 06:09 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 0d63f89c | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/17 11:01 | https://github.com/google/ktsan.git kcsan | 5863cc791e4c | d5696d51 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/16 09:56 | https://github.com/google/ktsan.git kcsan | 5863cc791e4c | cdac920b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/05 19:06 | https://github.com/google/ktsan.git kcsan | 94c006602e13 | af5c522d | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/03 16:38 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | c9610487 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/26 12:49 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | 25bb509e | .config | console log | report | ci2-upstream-kcsan-gce |