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================================================================== BUG: KCSAN: data-race in __wb_update_bandwidth / balance_dirty_pages write to 0xffff8880a945ed08 of 8 bytes by task 7882 on cpu 1: __wb_update_bandwidth+0x2cb/0x3d0 mm/page-writeback.c:1392 wb_update_bandwidth+0x93/0xc0 mm/page-writeback.c:1399 wb_writeback+0x21d/0x6a0 fs/fs-writeback.c:1897 wb_check_old_data_flush fs/fs-writeback.c:1996 [inline] wb_do_writeback fs/fs-writeback.c:2049 [inline] wb_workfn+0x796/0x970 fs/fs-writeback.c:2078 process_one_work+0x424/0x930 kernel/workqueue.c:2264 worker_thread+0x9a/0x7e0 kernel/workqueue.c:2410 kthread+0x1cb/0x1f0 kernel/kthread.c:255 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 read to 0xffff8880a945ed08 of 8 bytes by task 19125 on cpu 0: balance_dirty_pages+0x988/0x1ab0 mm/page-writeback.c:1706 balance_dirty_pages_ratelimited+0x6f9/0xa20 mm/page-writeback.c:1913 fault_dirty_shared_page+0x179/0x1a0 mm/memory.c:2421 do_shared_fault mm/memory.c:3754 [inline] do_fault mm/memory.c:3806 [inline] handle_pte_fault mm/memory.c:4033 [inline] __handle_mm_fault+0x1df9/0x2cf0 mm/memory.c:4163 handle_mm_fault+0x21c/0x540 mm/memory.c:4200 do_user_addr_fault arch/x86/mm/fault.c:1442 [inline] do_page_fault+0x4a4/0xa52 arch/x86/mm/fault.c:1517 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1203 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 19125 Comm: syz-executor.2 Not tainted 5.6.0-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/04/04 00:58 | https://github.com/google/ktsan.git kcsan | 40959e34d670 | ef26b610 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/03/21 21:38 | https://github.com/google/ktsan.git kcsan | 40959e34d670 | 78267cec | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/18 17:05 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 3de7aabb | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/30 17:44 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 6b36d338 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/24 08:09 | https://github.com/google/ktsan.git kcsan | 245a43005292 | be5c2c81 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/16 16:13 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 0ae38e44 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/29 19:44 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 4f7e1d0f | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/12 10:29 | https://github.com/google/ktsan.git kcsan | 7f2955e0d056 | 048f2d49 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/07 07:05 | https://github.com/google/ktsan.git kcsan | 94c006602e13 | d797d201 | .config | console log | report | ci2-upstream-kcsan-gce |