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================================================================== BUG: KCSAN: data-race in __rcu_read_unlock / rcu_report_exp_cpu_mult read to 0xffffffff85c7d080 of 8 bytes by task 26168 on cpu 0: rcu_read_unlock_special kernel/rcu/tree_plugin.h:615 [inline] __rcu_read_unlock+0x392/0x3d0 kernel/rcu/tree_plugin.h:383 rcu_read_unlock include/linux/rcupdate.h:670 [inline] __unlock_page_memcg+0x42/0xa0 mm/memcontrol.c:2019 unlock_page_memcg+0x23/0x30 mm/memcontrol.c:2028 page_remove_file_rmap mm/rmap.c:1273 [inline] page_remove_rmap+0x371/0x7a0 mm/rmap.c:1330 zap_pte_range mm/memory.c:1080 [inline] zap_pmd_range mm/memory.c:1184 [inline] zap_pud_range mm/memory.c:1213 [inline] zap_p4d_range mm/memory.c:1234 [inline] unmap_page_range+0xb31/0x1940 mm/memory.c:1255 unmap_single_vma+0x144/0x200 mm/memory.c:1300 unmap_vmas+0xda/0x1a0 mm/memory.c:1332 exit_mmap+0x13e/0x300 mm/mmap.c:3140 __mmput kernel/fork.c:1082 [inline] mmput+0xea/0x280 kernel/fork.c:1103 exit_mm kernel/exit.c:485 [inline] do_exit+0x4ac/0x18c0 kernel/exit.c:784 do_group_exit+0xb4/0x1c0 kernel/exit.c:895 get_signal+0x2a2/0x1320 kernel/signal.c:2734 do_signal+0x2f/0x6c0 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x250/0x2c0 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x384/0x3a0 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffffffff85c7d080 of 8 bytes by task 3255 on cpu 1: rcu_report_exp_cpu_mult+0x4f/0xa0 kernel/rcu/tree_exp.h:244 sync_rcu_exp_select_node_cpus+0x478/0x510 kernel/rcu/tree_exp.h:414 sync_rcu_exp_select_cpus+0x30c/0x590 kernel/rcu/tree_exp.h:439 rcu_exp_sel_wait_wake kernel/rcu/tree_exp.h:575 [inline] wait_rcu_exp_gp+0x25/0x40 kernel/rcu/tree_exp.h:589 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 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 3255 Comm: kworker/1:0 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: rcu_gp wait_rcu_exp_gp ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/02/03 00:21 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 93e5e335 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/20 06:47 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 0342f8c7 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/18 01:15 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 3de7aabb | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/12 20:30 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 31290a45 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/09 20:35 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 4de4e9f0 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/06 06:44 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 438e1227 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/05 14:26 | https://github.com/google/ktsan.git kcsan | 245a43005292 | d646e21f | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/05 11:38 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 68256974 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/03 18:31 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 9dcc1191 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/31 04:41 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 7f117e28 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/29 09:01 | https://github.com/google/ktsan.git kcsan | 245a43005292 | af6b8ef8 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/24 12:31 | https://github.com/google/ktsan.git kcsan | 245a43005292 | be5c2c81 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/15 20:42 | https://github.com/google/ktsan.git kcsan | 245a43005292 | eef6e580 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/10 15:15 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 4b83c8fb | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/03 00:38 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | ab342da3 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/01 04:17 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | a76bf83f | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/18 19:16 | https://github.com/google/ktsan.git kcsan | 5863cc791e4c | d5696d51 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/15 20:59 | https://github.com/google/ktsan.git kcsan | 5863cc791e4c | 79248ee8 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/13 00:38 | https://github.com/google/ktsan.git kcsan | 7f2955e0d056 | 048f2d49 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/06 20:15 | https://github.com/google/ktsan.git kcsan | 94c006602e13 | da505f84 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/02 23:17 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | d603afc9 | .config | console log | report | ci2-upstream-kcsan-gce |