syzbot


Out of 162 bugs, 141 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_set_state / perf_event_update_time (4) perf 2 58d 62d
KCSAN: data-race in _free_event / perf_pending_task (2) perf 9 60d 171d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (9) perf 1 129d 129d
KCSAN: data-race in __perf_event_read_value / perf_event_set_state (2) perf 1 166d 166d
KASAN: slab-use-after-free Read in filter_chain perf trace 13 204d 262d
KASAN: slab-use-after-free Read in uprobe_mmap perf trace 67 206d 253d
WARNING in free_event perf C unreliable done 1 268d 465d
KASAN: slab-use-after-free Read in uprobe_unregister perf trace C unreliable 5 227d 226d
KCSAN: data-race in _free_event / perf_pending_task perf 6 216d 246d
KCSAN: data-race in __change_pid / perf_event_switch_output (3) perf 1 243d 243d
BUG: soft lockup in sys_perf_event_open perf 1 308d 304d
BUG: using __this_cpu_add() in preemptible code in graph_lock perf 1 350d 346d
KCSAN: data-race in perf_event_set_state / perf_event_update_time (3) perf 2 286d 297d
WARNING: suspicious RCU usage in __schedule (2) perf 1 354d 350d
KCSAN: data-race in __perf_event_read_value / perf_event_set_state perf 1 307d 307d
KCSAN: data-race in __change_pid / perf_event_switch_output (2) perf 1 315d 315d
KASAN: use-after-free Read in refcount_sub_and_test_checked (2) perf syz done error 10 1877d 2283d
KCSAN: data-race in __change_pid / perf_event_switch_output perf 1 369d 369d
WARNING in ctx_sched_in (2) perf 1 441d 437d
KCSAN: data-race in perf_event_set_state / perf_event_update_userpage perf 1 394d 394d
KCSAN: data-race in detach_pid / perf_event_switch_output (4) perf 1 412d 412d
KCSAN: data-race in perf_event_set_state / perf_event_update_time (2) perf 1 436d 436d
KCSAN: data-race in ctx_sched_out / perf_event_update_time perf 1 506d 480d
INFO: task hung in perf_event_free_task perf C done error 40 571d 2080d
KCSAN: data-race in detach_pid / perf_event_switch_output (3) perf 1 566d 566d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (8) perf 2 624d 639d
KCSAN: data-race in perf_event_set_state / perf_event_update_time perf 2 634d 642d
KCSAN: data-race in perf_event_exit_event / perf_event_exit_event (4) perf 2 646d 648d
KCSAN: data-race in __perf_event_overflow / perf_event_exit_event (5) perf 2 654d 657d
KCSAN: data-race in __perf_event_overflow / perf_event_exit_event (4) perf 1 721d 721d
INFO: task can't die in perf_event_free_task perf syz unreliable 6 896d 1596d
WARNING: held lock freed in uprobe_unregister perf C error 3 1518d 1520d
KCSAN: data-race in event_sched_out / perf_event_update_time (4) perf 1 830d 830d
KCSAN: data-race in __perf_event_read_value / event_sched_out (6) perf 1 854d 854d
INFO: rcu detected stall in __perf_sw_event perf syz done error 99 1428d 2247d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (7) perf 3 872d 923d
KCSAN: data-race in __perf_event_read_value / event_sched_out (5) perf 5 891d 949d
possible deadlock in down_trylock (2) perf C error error 17 1074d 2345d
KCSAN: data-race in event_sched_out / perf_event_update_time (3) perf 1 932d 932d
possible deadlock in perf_event_ctx_lock_nested (2) perf syz done 12 1260d 1417d
INFO: rcu detected stall in inet_sendmsg (3) perf syz error error 68 1074d 1712d
KCSAN: data-race in event_sched_out / perf_event_update_time (2) perf 1 967d 967d
WARNING in add_event_to_ctx perf C done done 7 2102d 2114d
KCSAN: data-race in perf_event_exit_event / perf_event_exit_event (3) perf 1 978d 978d
KCSAN: data-race in __perf_event_overflow / perf_event_exit_event (3) perf 1 1002d 1002d
KCSAN: data-race in event_sched_in / perf_event_update_userpage (5) perf 1 1015d 1015d
KCSAN: data-race in __perf_event_read_value / event_sched_out (4) perf 1 1015d 1015d
KCSAN: data-race in event_sched_out / perf_event_update_time perf 2 1056d 1071d
KCSAN: data-race in __perf_event_overflow / perf_event_exit_event (2) perf 1 1068d 1068d
KCSAN: data-race in __perf_event_read_value / event_sched_out (3) perf 2 1077d 1094d
KCSAN: data-race in arch_perf_update_userpage / arch_perf_update_userpage (5) perf 2 1090d 1096d
KCSAN: data-race in event_sched_in / perf_mmap (3) perf 1 1095d 1095d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (6) perf 2 1095d 1104d
KCSAN: data-race in arch_perf_update_userpage / perf_mmap perf 2 1104d 1117d
general protection fault in perf_tp_event (3) perf 9 1196d 1280d
KCSAN: data-race in __perf_event_read / perf_mmap perf 1 1114d 1114d
KMSAN: uninit-value in __perf_event_task_sched_in perf 1 1190d 1190d
KCSAN: data-race in __perf_event_read_value / event_sched_out (2) perf 3 1135d 1174d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (5) perf 3 1142d 1148d
KCSAN: data-race in arch_perf_update_userpage / arch_perf_update_userpage (4) perf 1 1143d 1143d
KCSAN: data-race in event_sched_in / perf_mmap (2) perf 1 1144d 1144d
KCSAN: data-race in event_sched_in / perf_event_update_userpage (4) perf 1 1155d 1155d
KCSAN: data-race in __perf_event_overflow / perf_event_exit_event perf 1 1156d 1156d
KMSAN: uninit-value in build_id_parse (2) perf 3 1213d 1224d
KCSAN: data-race in event_sched_out / perf_mmap perf 7 1162d 1245d
KCSAN: data-race in perf_event_exit_event / perf_event_exit_event (2) perf 1 1164d 1164d
INFO: rcu detected stall in mrp_periodic_timer (3) perf 1 1184d 1184d
INFO: rcu detected stall in estimation_timer (2) perf 1 1190d 1190d
INFO: rcu detected stall in __mod_timer (3) perf 24 1159d 1385d
INFO: rcu detected stall in sys_sendto (5) perf 7 1159d 1280d
INFO: task hung in uprobe_start_dup_mmap (2) perf 4 1177d 1192d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (7) perf 2 1186d 1192d
INFO: rcu detected stall in read_iter_zero (3) perf 1 1242d 1242d
INFO: rcu detected stall in sys_io_submit perf 1 1243d 1243d
general protection fault in perf_cgroup_switch perf 1 1252d 1248d
possible deadlock in register_for_each_vma (2) perf 1 1286d 1284d
KCSAN: data-race in detach_pid / perf_event_switch_output (2) perf 1 1202d 1202d
KCSAN: data-race in arch_perf_update_userpage / arch_perf_update_userpage (3) perf 1 1208d 1208d
KCSAN: data-race in __perf_event_read_value / event_sched_out perf 6 1212d 1287d
INFO: rcu detected stall in tipc_sendstream perf 1 1254d 1254d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (6) perf 1 1235d 1235d
INFO: task hung in perf_event_alloc perf 1 1293d 1293d
KCSAN: data-race in event_sched_in / perf_mmap perf 1 1238d 1232d
KCSAN: data-race in ctx_sched_out / perf_mmap perf 2 1249d 1255d
INFO: rcu detected stall in perf_event_open (2) perf 1 1284d 1284d
KCSAN: data-race in __perf_event_read_value / event_sched_in perf 2 1259d 1273d
KCSAN: data-race in perf_event_exit_event / perf_event_exit_event perf 1 1276d 1276d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (5) perf 1 1287d 1287d
KCSAN: data-race in detach_pid / perf_event_switch_output perf 16 1287d 1438d
WARNING in ctx_sched_in perf 33 1385d 1449d
INFO: task hung in perf_event_exit_task perf 25 1357d 1457d
KCSAN: data-race in copy_page_from_iter_atomic / uprobe_write_opcode perf 1 1304d 1304d
WARNING in __perf_install_in_context perf 6 1395d 1417d
WARNING in task_ctx_sched_out perf 2 1398d 1417d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (4) perf 1 1313d 1313d
INFO: rcu detected stall in read_iter_zero (2) perf 1 1379d 1379d
KCSAN: data-race in event_sched_in / perf_event_update_userpage (3) perf 1 1326d 1326d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (4) perf 1 1336d 1336d
WARNING in ctx_sched_out perf 2 1450d 1417d
KMSAN: uninit-value in build_id_parse perf 3 1427d 1438d
possible deadlock in register_for_each_vma perf 1 1473d 1469d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (3) perf 2 1401d 1412d
general protection fault in perf_tp_event (2) perf 109 1492d 1732d
KCSAN: data-race in event_sched_in / perf_event_update_userpage (2) perf 1 1424d 1424d
KCSAN: data-race in __perf_event_header__init_id / detach_pid perf 1 1445d 1445d
KCSAN: data-race in find_get_context / find_get_context perf 1 1446d 1446d
KCSAN: data-race in event_sched_out / perf_event_update_userpage (2) perf 1 1448d 1448d
BUG: KFENCE: use-after-free read in find_uprobe perf 1 1521d 1521d
WARNING: refcount bug in uprobe_mmap perf 1 1522d 1521d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (3) perf 1 1526d 1526d
KCSAN: data-race in event_sched_in / perf_event_update_userpage perf 1 1530d 1530d
INFO: rcu detected stall in __do_sys_bpf perf 1 1631d 1631d
INFO: rcu detected stall in __do_sys_perf_event_open perf 2 1672d 1675d
KCSAN: data-race in event_sched_out / perf_event_update_userpage perf 1 1618d 1618d
KMSAN: uninit-value in x86_pmu_stop perf 1 1678d 1678d
BUG: unable to handle kernel paging request in perf_misc_flags perf 1 1680d 1676d
BUG: corrupted list in event_sched_out perf 1 1682d 1678d
general protection fault in perf_tp_event_match (2) perf 356 1736d 2065d
BUG: unable to handle kernel NULL pointer dereference in perf_misc_flags perf 2 1721d 1731d
BUG: soft lockup in perf_release (2) perf 2 1732d 1728d
general protection fault in msr_event_init perf 1 1734d 1730d
INFO: rcu detected stall in __se_sys_perf_event_open perf 1 1735d 1735d
general protection fault in perf_misc_flags perf 7 1649d 1657d
KCSAN: data-race in perf_event_exit_task / perf_event_exit_task perf 1 1681d 1681d
INFO: rcu detected stall in sys_sendto (4) perf 1 1737d 1737d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage (2) perf 1 1718d 1718d
WARNING: locking bug in __perf_event_task_sched_in perf 2 1822d 1856d
KASAN: out-of-bounds Read in perf_assign_events perf 1 1806d 1802d
KCSAN: data-race in perf_event_wakeup / perf_event_wakeup perf 1 1785d 1785d
BUG: unable to handle kernel NULL pointer dereference in smp_call_function_many_cond perf 1 1754d 1754d
KCSAN: data-race in calc_timer_values / perf_event_update_time perf 8 1858d 1970d
KCSAN: data-race in __change_pid / __task_pid_nr_ns (2) perf 1 1879d 1879d
KCSAN: data-race in perf_event_update_userpage / perf_event_update_userpage perf 4 1891d 1976d
KCSAN: data-race in arch_perf_update_userpage / arch_perf_update_userpage (2) perf 1 1934d 1934d
KCSAN: data-race in mmap_region / register_for_each_vma perf 1 1941d 1941d
INFO: rcu detected stall in sys_perf_event_open (4) perf 1 1912d 1912d
INFO: rcu detected stall in sys_perf_event_open (3) perf 1 1913d 1913d
INFO: rcu detected stall in sys_perf_event_open (2) perf 8 1947d 1949d
INFO: task hung in perf_ioctl perf 1 1951d 1951d
INFO: task hung in perf_event_release_kernel perf 18 1951d 1952d
KCSAN: data-race in ns_capable_common / prepare_signal perf 1 1974d 1974d
KCSAN: data-race in arch_perf_update_userpage / arch_perf_update_userpage perf 1 1977d 1977d
general protection fault in perf_tp_event perf 423 2103d 2527d
KASAN: use-after-free Read in _free_event perf 1 2112d 2110d
INFO: task hung in uprobe_start_dup_mmap perf 196 2187d 2401d
INFO: task hung in register_for_each_vma perf 1 2254d 2254d
possible deadlock in uprobe_clear_state perf 2 2267d 2304d
possible deadlock in percpu_down_write perf 2 2275d 2363d
possible deadlock in fs_reclaim_acquire perf 1 2280d 2278d
KASAN: slab-out-of-bounds Read in perf_exclude_event perf 5 2299d 2287d
general protection fault in uprobe_mmap perf 1 2321d 2319d
INFO: rcu detected stall in sys_perf_event_open perf 1 2392d 2390d
INFO: task hung in __do_sys_perf_event_open perf 1 2457d 2454d
general protection fault in perf_tp_event_match perf 1 2459d 2459d
possible deadlock in perf_event_for_each_child perf 135 2618d 2627d
possible deadlock in perf_event_ctx_lock_nested perf 8914 2666d 2715d
INFO: rcu detected stall in smp_call_function_many perf 138 2410d 2566d
BUG: soft lockup in __msan_metadata_ptr_for_load_4 perf 243 2398d 2459d
general protection fault in __perf_event_task_sched_in perf 1 2465d 2465d
BUG: soft lockup in event_function_call perf 25 2404d 2456d
INFO: rcu detected stall in event_function_call perf 5 2411d 2450d
INFO: task hung in rwsem_down_read_failed perf 8 2616d 2663d