=====================================================
BUG: KMSAN: uninit-value in check_pointer lib/vsprintf.c:705 [inline]
BUG: KMSAN: uninit-value in string+0x3cf/0x6f0 lib/vsprintf.c:717
 check_pointer lib/vsprintf.c:705 [inline]
 string+0x3cf/0x6f0 lib/vsprintf.c:717
 vsnprintf+0x2222/0x3650 lib/vsprintf.c:2805
 seq_vprintf fs/seq_file.c:391 [inline]
 seq_printf+0x314/0x4f0 fs/seq_file.c:406
 proto_seq_show+0x583/0x1770 net/core/sock.c:3878
 seq_read_iter+0xaac/0x2150 fs/seq_file.c:230
 seq_read+0x7a6/0x990 fs/seq_file.c:162
 pde_read fs/proc/inode.c:311 [inline]
 proc_reg_read+0x39d/0x560 fs/proc/inode.c:323
 vfs_read+0x6c8/0x1980 fs/read_write.c:479
 ksys_read+0x28b/0x510 fs/read_write.c:619
 __do_sys_read fs/read_write.c:629 [inline]
 __se_sys_read fs/read_write.c:627 [inline]
 __x64_sys_read+0xdb/0x120 fs/read_write.c:627
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Local variable sample.i created at:
 perf_log_itrace_start kernel/events/core.c:9069 [inline]
 event_sched_in+0x132b/0x35c0 kernel/events/core.c:2557
 group_sched_in kernel/events/core.c:2595 [inline]
 merge_sched_in kernel/events/core.c:3746 [inline]
 visit_groups_merge+0x2919/0x7460 kernel/events/core.c:3696

CPU: 0 PID: 15151 Comm: syz-executor.3 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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