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| 🐞 Open [988] ≡ Subsystems 🐞 Fixed [5236] 🐞 Invalid [12507] ⬇ Missing Backports [83] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes | 💬 Send us feedback |
| Title | Replies (including bot) | Last reply |
|---|---|---|
| [PATCH 5.4 000/309] 5.4.19-stable review | 321 (321) | 2020/02/12 21:17 |
| [PATCH 5.5 000/367] 5.5.3-stable review | 385 (385) | 2020/02/12 07:27 |
| [tip: core/rcu] rcu: Use READ_ONCE() for ->expmask in rcu_read_unlock_special() | 1 (1) | 2020/01/25 10:42 |
| [PATCH tip/core/rcu 0/11] Preemptible-RCU updates for v5.6 | 12 (12) | 2019/12/10 04:26 |
| KCSAN: data-race in __rcu_read_unlock / sync_rcu_exp_select_cpus | 4 (5) | 2019/11/04 17:19 |
================================================================== BUG: KCSAN: data-race in __rcu_read_unlock / sync_rcu_exp_select_cpus read to 0xffffffff85c7d080 of 8 bytes by task 30033 on cpu 1: 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] filemap_map_pages+0x5b3/0x990 mm/filemap.c:2667 do_fault_around mm/memory.c:3546 [inline] do_read_fault mm/memory.c:3580 [inline] do_fault mm/memory.c:3714 [inline] handle_pte_fault mm/memory.c:3945 [inline] __handle_mm_fault+0x2a92/0x2e00 mm/memory.c:4075 handle_mm_fault+0x21b/0x530 mm/memory.c:4112 faultin_page mm/gup.c:640 [inline] __get_user_pages+0x485/0x1130 mm/gup.c:851 populate_vma_page_range+0xe6/0x100 mm/gup.c:1235 __mm_populate+0x168/0x2a0 mm/gup.c:1283 mm_populate include/linux/mm.h:2347 [inline] vm_mmap_pgoff+0x181/0x190 mm/util.c:511 ksys_mmap_pgoff+0x99/0x420 mm/mmap.c:1607 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0x2e/0x40 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffffffff85c7d080 of 8 bytes by task 8080 on cpu 0: sync_exp_reset_tree kernel/rcu/tree_exp.h:137 [inline] sync_rcu_exp_select_cpus+0xd5/0x590 kernel/rcu/tree_exp.h:427 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: 0 PID: 8080 Comm: kworker/0:3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020/02/06 11:14 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 662cf49a | .config | console log | report | ci2-upstream-kcsan-gce | |||||
| 2020/01/29 19:28 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 5ed23f9a | .config | console log | report | ci2-upstream-kcsan-gce | |||||
| 2019/12/21 06:56 | https://github.com/google/ktsan.git kcsan | 245a43005292 | bc586918 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
| 2019/12/05 04:53 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | b2088328 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
| 2019/12/02 17:41 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | f879db37 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
| 2019/11/17 05:46 | https://github.com/google/ktsan.git kcsan | 5863cc791e4c | cdac920b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
| 2019/10/24 23:14 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | d01bb02a | .config | console log | report | ci2-upstream-kcsan-gce |