syzbot


Out of 160 bugs, 139 were automatically obsoleted (11 due to revoked reproducers), 21 were invalidated by users.
Applied filters: Label=subsystems:perf (drop)
Title Repro Cause bisect Fix bisect Count Last Reported
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (9) perf 1 79d 79d
KCSAN: data-race in __perf_event_read_value / perf_event_set_state (2) perf 1 117d 117d
KASAN: slab-use-after-free Read in filter_chain perf trace 13 154d 212d
KASAN: slab-use-after-free Read in uprobe_mmap perf trace 67 156d 203d
WARNING in free_event perf C unreliable done 1 218d 416d
KASAN: slab-use-after-free Read in uprobe_unregister perf trace C unreliable 5 178d 176d
KCSAN: data-race in _free_event / perf_pending_task perf 6 167d 197d
KCSAN: data-race in __change_pid / perf_event_switch_output (3) perf 1 194d 194d
BUG: soft lockup in sys_perf_event_open perf 1 258d 254d
BUG: using __this_cpu_add() in preemptible code in graph_lock perf 1 301d 297d
KCSAN: data-race in perf_event_set_state / perf_event_update_time (3) perf 2 237d 247d
WARNING: suspicious RCU usage in __schedule (2) perf 1 304d 300d
KCSAN: data-race in __perf_event_read_value / perf_event_set_state perf 1 257d 257d
KCSAN: data-race in __change_pid / perf_event_switch_output (2) perf 1 266d 266d
KASAN: use-after-free Read in refcount_sub_and_test_checked (2) perf syz done error 10 1827d 2234d
KCSAN: data-race in __change_pid / perf_event_switch_output perf 1 320d 320d
WARNING in ctx_sched_in (2) perf 1 392d 388d
KCSAN: data-race in perf_event_set_state / perf_event_update_userpage perf 1 345d 345d
KCSAN: data-race in detach_pid / perf_event_switch_output (4) perf 1 362d 362d
KCSAN: data-race in perf_event_set_state / perf_event_update_time (2) perf 1 386d 386d
KCSAN: data-race in ctx_sched_out / perf_event_update_time perf 1 457d 430d
INFO: task hung in perf_event_free_task perf C done error 40 522d 2030d
KCSAN: data-race in detach_pid / perf_event_switch_output (3) perf 1 517d 517d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (8) perf 2 574d 590d
KCSAN: data-race in perf_event_set_state / perf_event_update_time perf 2 584d 592d
KCSAN: data-race in perf_event_exit_event / perf_event_exit_event (4) perf 2 597d 598d
KCSAN: data-race in __perf_event_overflow / perf_event_exit_event (5) perf 2 605d 607d
KCSAN: data-race in __perf_event_overflow / perf_event_exit_event (4) perf 1 671d 671d
INFO: task can't die in perf_event_free_task perf syz unreliable 6 847d 1546d
WARNING: held lock freed in uprobe_unregister perf C error 3 1468d 1471d
KCSAN: data-race in event_sched_out / perf_event_update_time (4) perf 1 780d 780d
KCSAN: data-race in __perf_event_read_value / event_sched_out (6) perf 1 804d 804d
INFO: rcu detected stall in __perf_sw_event perf syz done error 99 1379d 2197d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (7) perf 3 822d 873d
KCSAN: data-race in __perf_event_read_value / event_sched_out (5) perf 5 842d 899d
possible deadlock in down_trylock (2) perf C error error 17 1025d 2295d
KCSAN: data-race in event_sched_out / perf_event_update_time (3) perf 1 882d 882d
possible deadlock in perf_event_ctx_lock_nested (2) perf syz done 12 1211d 1368d
INFO: rcu detected stall in inet_sendmsg (3) perf syz error error 68 1024d 1662d
KCSAN: data-race in event_sched_out / perf_event_update_time (2) perf 1 917d 917d
WARNING in add_event_to_ctx perf C done done 7 2053d 2065d
KCSAN: data-race in perf_event_exit_event / perf_event_exit_event (3) perf 1 928d 928d
KCSAN: data-race in __perf_event_overflow / perf_event_exit_event (3) perf 1 953d 953d
KCSAN: data-race in event_sched_in / perf_event_update_userpage (5) perf 1 965d 965d
KCSAN: data-race in __perf_event_read_value / event_sched_out (4) perf 1 965d 965d
KCSAN: data-race in event_sched_out / perf_event_update_time perf 2 1006d 1021d
KCSAN: data-race in __perf_event_overflow / perf_event_exit_event (2) perf 1 1018d 1018d
KCSAN: data-race in __perf_event_read_value / event_sched_out (3) perf 2 1027d 1044d
KCSAN: data-race in arch_perf_update_userpage / arch_perf_update_userpage (5) perf 2 1040d 1046d
KCSAN: data-race in event_sched_in / perf_mmap (3) perf 1 1045d 1045d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (6) perf 2 1046d 1054d
KCSAN: data-race in arch_perf_update_userpage / perf_mmap perf 2 1054d 1067d
general protection fault in perf_tp_event (3) perf 9 1147d 1231d
KCSAN: data-race in __perf_event_read / perf_mmap perf 1 1064d 1064d
KMSAN: uninit-value in __perf_event_task_sched_in perf 1 1140d 1140d
KCSAN: data-race in __perf_event_read_value / event_sched_out (2) perf 3 1086d 1124d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (5) perf 3 1092d 1099d
KCSAN: data-race in arch_perf_update_userpage / arch_perf_update_userpage (4) perf 1 1093d 1093d
KCSAN: data-race in event_sched_in / perf_mmap (2) perf 1 1094d 1094d
KCSAN: data-race in event_sched_in / perf_event_update_userpage (4) perf 1 1105d 1105d
KCSAN: data-race in __perf_event_overflow / perf_event_exit_event perf 1 1107d 1107d
KMSAN: uninit-value in build_id_parse (2) perf 3 1164d 1175d
KCSAN: data-race in event_sched_out / perf_mmap perf 7 1112d 1196d
KCSAN: data-race in perf_event_exit_event / perf_event_exit_event (2) perf 1 1114d 1114d
INFO: rcu detected stall in mrp_periodic_timer (3) perf 1 1135d 1135d
INFO: rcu detected stall in estimation_timer (2) perf 1 1140d 1140d
INFO: rcu detected stall in __mod_timer (3) perf 24 1109d 1335d
INFO: rcu detected stall in sys_sendto (5) perf 7 1109d 1230d
INFO: task hung in uprobe_start_dup_mmap (2) perf 4 1128d 1142d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (7) perf 2 1136d 1143d
INFO: rcu detected stall in read_iter_zero (3) perf 1 1193d 1193d
INFO: rcu detected stall in sys_io_submit perf 1 1194d 1194d
general protection fault in perf_cgroup_switch perf 1 1202d 1198d
possible deadlock in register_for_each_vma (2) perf 1 1237d 1234d
KCSAN: data-race in detach_pid / perf_event_switch_output (2) perf 1 1152d 1152d
KCSAN: data-race in arch_perf_update_userpage / arch_perf_update_userpage (3) perf 1 1158d 1158d
KCSAN: data-race in __perf_event_read_value / event_sched_out perf 6 1162d 1237d
INFO: rcu detected stall in tipc_sendstream perf 1 1204d 1204d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (6) perf 1 1186d 1186d
INFO: task hung in perf_event_alloc perf 1 1243d 1243d
KCSAN: data-race in event_sched_in / perf_mmap perf 1 1189d 1182d
KCSAN: data-race in ctx_sched_out / perf_mmap perf 2 1199d 1205d
INFO: rcu detected stall in perf_event_open (2) perf 1 1234d 1234d
KCSAN: data-race in __perf_event_read_value / event_sched_in perf 2 1209d 1223d
KCSAN: data-race in perf_event_exit_event / perf_event_exit_event perf 1 1227d 1227d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (5) perf 1 1237d 1237d
KCSAN: data-race in detach_pid / perf_event_switch_output perf 16 1237d 1388d
WARNING in ctx_sched_in perf 33 1335d 1399d
INFO: task hung in perf_event_exit_task perf 25 1307d 1408d
KCSAN: data-race in copy_page_from_iter_atomic / uprobe_write_opcode perf 1 1255d 1255d
WARNING in __perf_install_in_context perf 6 1345d 1368d
WARNING in task_ctx_sched_out perf 2 1348d 1367d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (4) perf 1 1263d 1263d
INFO: rcu detected stall in read_iter_zero (2) perf 1 1329d 1329d
KCSAN: data-race in event_sched_in / perf_event_update_userpage (3) perf 1 1277d 1277d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (4) perf 1 1287d 1287d
WARNING in ctx_sched_out perf 2 1401d 1368d
KMSAN: uninit-value in build_id_parse perf 3 1377d 1388d
possible deadlock in register_for_each_vma perf 1 1424d 1420d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (3) perf 2 1351d 1362d
general protection fault in perf_tp_event (2) perf 109 1442d 1683d
KCSAN: data-race in event_sched_in / perf_event_update_userpage (2) perf 1 1374d 1374d
KCSAN: data-race in __perf_event_header__init_id / detach_pid perf 1 1396d 1396d
KCSAN: data-race in find_get_context / find_get_context perf 1 1397d 1397d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (2) perf 1 1398d 1398d
BUG: KFENCE: use-after-free read in find_uprobe perf 1 1472d 1472d
WARNING: refcount bug in uprobe_mmap perf 1 1472d 1472d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (3) perf 1 1477d 1477d
KCSAN: data-race in event_sched_in / perf_event_update_userpage perf 1 1480d 1480d
INFO: rcu detected stall in __do_sys_bpf perf 1 1581d 1581d
INFO: rcu detected stall in __do_sys_perf_event_open perf 2 1623d 1625d
KCSAN: data-race in event_sched_out / perf_event_update_userpage perf 1 1568d 1568d
KMSAN: uninit-value in x86_pmu_stop perf 1 1629d 1629d
BUG: unable to handle kernel paging request in perf_misc_flags perf 1 1630d 1626d
BUG: corrupted list in event_sched_out perf 1 1632d 1628d
general protection fault in perf_tp_event_match (2) perf 356 1687d 2015d
BUG: unable to handle kernel NULL pointer dereference in perf_misc_flags perf 2 1671d 1681d
BUG: soft lockup in perf_release (2) perf 2 1682d 1678d
general protection fault in msr_event_init perf 1 1684d 1680d
INFO: rcu detected stall in __se_sys_perf_event_open perf 1 1685d 1685d
general protection fault in perf_misc_flags perf 7 1600d 1608d
KCSAN: data-race in perf_event_exit_task / perf_event_exit_task perf 1 1631d 1631d
INFO: rcu detected stall in sys_sendto (4) perf 1 1688d 1688d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (2) perf 1 1668d 1668d
WARNING: locking bug in __perf_event_task_sched_in perf 2 1772d 1807d
KASAN: out-of-bounds Read in perf_assign_events perf 1 1756d 1752d
KCSAN: data-race in perf_event_wakeup / perf_event_wakeup perf 1 1735d 1735d
BUG: unable to handle kernel NULL pointer dereference in smp_call_function_many_cond perf 1 1705d 1705d
KCSAN: data-race in calc_timer_values / perf_event_update_time perf 8 1808d 1921d
KCSAN: data-race in __change_pid / __task_pid_nr_ns (2) perf 1 1829d 1829d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage perf 4 1841d 1927d
KCSAN: data-race in arch_perf_update_userpage / arch_perf_update_userpage (2) perf 1 1884d 1884d
KCSAN: data-race in mmap_region / register_for_each_vma perf 1 1891d 1891d
INFO: rcu detected stall in sys_perf_event_open (4) perf 1 1863d 1863d
INFO: rcu detected stall in sys_perf_event_open (3) perf 1 1863d 1863d
INFO: rcu detected stall in sys_perf_event_open (2) perf 8 1898d 1899d
INFO: task hung in perf_ioctl perf 1 1901d 1901d
INFO: task hung in perf_event_release_kernel perf 18 1901d 1903d
KCSAN: data-race in ns_capable_common / prepare_signal perf 1 1925d 1925d
KCSAN: data-race in arch_perf_update_userpage / arch_perf_update_userpage perf 1 1927d 1927d
general protection fault in perf_tp_event perf 423 2053d 2477d
KASAN: use-after-free Read in _free_event perf 1 2062d 2061d
INFO: task hung in uprobe_start_dup_mmap perf 196 2137d 2351d
INFO: task hung in register_for_each_vma perf 1 2204d 2204d
possible deadlock in uprobe_clear_state perf 2 2217d 2255d
possible deadlock in percpu_down_write perf 2 2225d 2313d
possible deadlock in fs_reclaim_acquire perf 1 2230d 2229d
KASAN: slab-out-of-bounds Read in perf_exclude_event perf 5 2249d 2238d
general protection fault in uprobe_mmap perf 1 2272d 2270d
INFO: rcu detected stall in sys_perf_event_open perf 1 2342d 2340d
INFO: task hung in __do_sys_perf_event_open perf 1 2407d 2405d
general protection fault in perf_tp_event_match perf 1 2409d 2409d
possible deadlock in perf_event_for_each_child perf 135 2569d 2578d
possible deadlock in perf_event_ctx_lock_nested perf 8914 2616d 2666d
INFO: rcu detected stall in smp_call_function_many perf 138 2361d 2516d
BUG: soft lockup in __msan_metadata_ptr_for_load_4 perf 243 2349d 2409d
general protection fault in __perf_event_task_sched_in perf 1 2415d 2415d
BUG: soft lockup in event_function_call perf 25 2355d 2407d
INFO: rcu detected stall in event_function_call perf 5 2361d 2400d
INFO: task hung in rwsem_down_read_failed perf 8 2567d 2614d