=====================================================
BUG: KMSAN: uninit-value in __preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
BUG: KMSAN: uninit-value in preempt_count_add+0x1b5/0x320 kernel/sched/core.c:5532
 __preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
 preempt_count_add+0x1b5/0x320 kernel/sched/core.c:5532
 sysvec_reschedule_ipi+0x1c/0x110 arch/x86/kernel/smp.c:225
 asm_sysvec_reschedule_ipi+0x12/0x20
 smap_save mm/kmsan/instrumentation.c:76 [inline]
 get_shadow_origin_ptr mm/kmsan/instrumentation.c:32 [inline]
 __msan_metadata_ptr_for_load_4+0x10/0x30 mm/kmsan/instrumentation.c:76
 unwind_done arch/x86/include/asm/unwind.h:50 [inline]
 arch_stack_walk+0x32e/0x3c0 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x117/0x1a0 kernel/stacktrace.c:122
 kmsan_save_stack_with_flags mm/kmsan/core.c:80 [inline]
 kmsan_internal_chain_origin+0xac/0x120 mm/kmsan/core.c:252
 kmsan_internal_memmove_metadata+0x201/0x350 mm/kmsan/core.c:163
 __msan_memcpy+0x65/0x90 mm/kmsan/instrumentation.c:145
 sock_read_iter+0x121/0x630 net/socket.c:1026
 call_read_iter include/linux/fs.h:2044 [inline]
 new_sync_read fs/read_write.c:401 [inline]
 vfs_read+0xec1/0x17b0 fs/read_write.c:482
 ksys_read+0x28b/0x510 fs/read_write.c:620
 __do_sys_read fs/read_write.c:630 [inline]
 __se_sys_read fs/read_write.c:628 [inline]
 __x64_sys_read+0xdb/0x120 fs/read_write.c:628
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Local variable nd created at:
 filename_lookup+0xc5/0xa50 fs/namei.c:2524
 vfs_statx+0x1e6/0x8c0 fs/stat.c:228

CPU: 0 PID: 2820 Comm: syslogd Not tainted 5.18.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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