Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KCSAN: data-race in enqueue_timer / mod_timer (2) net | 2 | 1530d | 1588d | 0/26 | auto-closed as invalid on 2020/03/29 15:30 |
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Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KCSAN: data-race in enqueue_timer / mod_timer (2) net | 2 | 1530d | 1588d | 0/26 | auto-closed as invalid on 2020/03/29 15:30 |
================================================================== BUG: KCSAN: data-race in enqueue_timer / mod_timer write to 0xffff888129ddf6d0 of 8 bytes by task 1838 on cpu 1: hlist_add_head include/linux/list.h:789 [inline] enqueue_timer+0x9c/0x210 kernel/time/timer.c:540 __internal_add_timer+0x4f/0x60 kernel/time/timer.c:553 internal_add_timer kernel/time/timer.c:595 [inline] __mod_timer kernel/time/timer.c:1053 [inline] mod_timer+0x303/0x7a0 kernel/time/timer.c:1100 blk_add_timer+0x1c6/0x1d0 block/blk-timeout.c:148 blk_mq_start_request+0xb7/0x370 block/blk-mq.c:693 loop_queue_rq+0x64/0x2b0 drivers/block/loop.c:1898 blk_mq_dispatch_rq_list+0xbe9/0xe40 block/blk-mq.c:1273 blk_mq_do_dispatch_sched+0x11d/0x260 block/blk-mq-sched.c:115 blk_mq_sched_dispatch_requests+0x2b4/0x380 block/blk-mq-sched.c:211 __blk_mq_run_hw_queue+0xb7/0x160 block/blk-mq.c:1403 __blk_mq_delay_run_hw_queue+0x31b/0x3a0 block/blk-mq.c:1471 blk_mq_run_hw_queue+0x103/0x1c0 block/blk-mq.c:1508 blk_mq_sched_insert_requests+0x1ca/0x2e0 block/blk-mq-sched.c:444 blk_mq_flush_plug_list+0x572/0x6c0 block/blk-mq.c:1772 blk_flush_plug_list+0x271/0x2a0 block/blk-core.c:1766 blk_finish_plug block/blk-core.c:1783 [inline] blk_finish_plug+0x60/0x84 block/blk-core.c:1779 read_pages+0xbc/0x2d0 mm/readahead.c:142 __do_page_cache_readahead+0x353/0x390 mm/readahead.c:212 force_page_cache_readahead+0x13a/0x1f0 mm/readahead.c:243 page_cache_sync_readahead+0x1cf/0x1e0 mm/readahead.c:522 generic_file_buffered_read mm/filemap.c:2051 [inline] generic_file_read_iter+0xeb6/0x1440 mm/filemap.c:2324 blkdev_read_iter+0xb2/0xe0 fs/block_dev.c:2010 call_read_iter include/linux/fs.h:1889 [inline] new_sync_read+0x389/0x4f0 fs/read_write.c:414 __vfs_read+0xb1/0xc0 fs/read_write.c:427 vfs_read fs/read_write.c:461 [inline] vfs_read+0x143/0x2c0 fs/read_write.c:446 ksys_read+0xd5/0x1b0 fs/read_write.c:587 __do_sys_read fs/read_write.c:597 [inline] __se_sys_read fs/read_write.c:595 [inline] __x64_sys_read+0x4c/0x60 fs/read_write.c:595 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888129ddf6d0 of 8 bytes by task 2492 on cpu 0: __mod_timer kernel/time/timer.c:963 [inline] mod_timer+0x59/0x7a0 kernel/time/timer.c:1100 blk_add_timer+0x1c6/0x1d0 block/blk-timeout.c:148 blk_mq_start_request+0xb7/0x370 block/blk-mq.c:693 loop_queue_rq+0x64/0x2b0 drivers/block/loop.c:1898 blk_mq_dispatch_rq_list+0xbe9/0xe40 block/blk-mq.c:1273 blk_mq_do_dispatch_sched+0x11d/0x260 block/blk-mq-sched.c:115 blk_mq_sched_dispatch_requests+0x2b4/0x380 block/blk-mq-sched.c:211 __blk_mq_run_hw_queue+0xb7/0x160 block/blk-mq.c:1403 blk_mq_run_work_fn+0x57/0x70 block/blk-mq.c:1636 process_one_work+0x3d4/0x890 kernel/workqueue.c:2269 worker_thread+0xa0/0x800 kernel/workqueue.c:2415 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: 0 PID: 2492 Comm: kworker/0:1H Not tainted 5.4.0-rc6+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: kblockd blk_mq_run_work_fn ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/11/05 13:04 | https://github.com/google/ktsan.git kcsan | 94c006602e13 | 0f3ec414 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/16 19:32 | https://github.com/google/ktsan.git kcsan | a6311db074d9 | 8c88c9c1 | .config | console log | report | ci2-upstream-kcsan-gce |