syzbot

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BUG: KMSAN: uninit-value in __perf_event_task_sched_in+0x2b6/0xca0 kernel/events/core.c:3924
 __perf_event_task_sched_in+0x2b6/0xca0 kernel/events/core.c:3924
 perf_event_task_sched_in include/linux/perf_event.h:1209 [inline]
 finish_task_switch+0x72c/0xad0 kernel/sched/core.c:4847
 context_switch kernel/sched/core.c:4975 [inline]
 __schedule+0x182c/0x20a0 kernel/sched/core.c:6253
 schedule_idle+0x5b/0x90 kernel/sched/core.c:6354
 do_idle+0x816/0x840 kernel/sched/idle.c:334
 cpu_startup_entry+0x3c/0x40 kernel/sched/idle.c:403
 start_secondary+0x112/0x120 arch/x86/kernel/smpboot.c:272
 secondary_startup_64_no_verify+0xb1/0xbb

------------[ cut here ]------------
slab index 52160 out of bounds (604) for stack id 0283cbc0
WARNING: CPU: 1 PID: 0 at lib/stackdepot.c:293 stack_depot_fetch+0x2f/0x60 lib/stackdepot.c:292
Modules linked in:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:stack_depot_fetch+0x2f/0x60 lib/stackdepot.c:292
Code: 48 c7 06 00 00 00 00 31 db 85 ff 74 45 89 f9 0f b7 c1 8b 15 83 59 8f 0b 39 d0 7e 12 48 c7 c7 55 cd ed 90 89 c6 e8 e1 b0 fb fa <0f> 0b eb 24 89 c0 48 8b 04 c5 00 b8 fc 91 48 85 c0 74 15 c1 e9 0c
RSP: 0018:ffff888102c4f848 EFLAGS: 00010046
RAX: ee1befff8248f700 RBX: 0000000000000000 RCX: ffff888102c3c100
RDX: 0000000040000000 RSI: 0000000080000003 RDI: 0000000000000000
RBP: ffff888102c4f850 R08: ffffffff81961950 R09: 0000000000000000
R10: 0000000000000012 R11: ffff888102c3c100 R12: ffff888102c4f9a8
R13: ffff888102c3c100 R14: 0000000000000008 R15: 000000000283cbc0
FS:  0000000000000000(0000) GS:ffff88813fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f7050034 CR3: 000000008112e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kmsan_print_origin+0x41/0x2e0 mm/kmsan/report.c:97
 kmsan_report+0x1dd/0x2f0 mm/kmsan/report.c:185
 __msan_warning+0xb8/0x130 mm/kmsan/instrumentation.c:222
 __perf_event_task_sched_in+0x2b6/0xca0 kernel/events/core.c:3924
 perf_event_task_sched_in include/linux/perf_event.h:1209 [inline]
 finish_task_switch+0x72c/0xad0 kernel/sched/core.c:4847
 context_switch kernel/sched/core.c:4975 [inline]
 __schedule+0x182c/0x20a0 kernel/sched/core.c:6253
 schedule_idle+0x5b/0x90 kernel/sched/core.c:6354
 do_idle+0x816/0x840 kernel/sched/idle.c:334
 cpu_startup_entry+0x3c/0x40 kernel/sched/idle.c:403
 start_secondary+0x112/0x120 arch/x86/kernel/smpboot.c:272
 secondary_startup_64_no_verify+0xb1/0xbb
 </TASK>
---[ end trace d0954b51d36472ee ]---
Uninit was created at:
(stack is not available)

CPU: 1 PID: 0 Comm: swapper/1 Tainted: G        W         5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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