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BUG: KMSAN: uninit-value in __is_kernel include/asm-generic/sections.h:208 [inline]
BUG: KMSAN: uninit-value in is_kernel include/linux/kallsyms.h:36 [inline]
BUG: KMSAN: uninit-value in is_ksym_addr include/linux/kallsyms.h:44 [inline]
BUG: KMSAN: uninit-value in kallsyms_lookup_buildid+0x1ee/0xb10 kernel/kallsyms.c:338
 __is_kernel include/asm-generic/sections.h:208 [inline]
 is_kernel include/linux/kallsyms.h:36 [inline]
 is_ksym_addr include/linux/kallsyms.h:44 [inline]
 kallsyms_lookup_buildid+0x1ee/0xb10 kernel/kallsyms.c:338
 __sprint_symbol+0x166/0x650 kernel/kallsyms.c:451
 sprint_backtrace+0x7f/0x90 kernel/kallsyms.c:548
 symbol_string+0x421/0x6e0 lib/vsprintf.c:999
 pointer+0x136e/0x2060 lib/vsprintf.c:2392
 vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2799
 seq_vprintf fs/seq_file.c:391 [inline]
 seq_printf+0x314/0x4f0 fs/seq_file.c:406
 proc_pid_stack+0x3b7/0x4d0 fs/proc/base.c:461
 proc_single_show+0x1cc/0x370 fs/proc/base.c:778
 seq_read_iter+0xaac/0x2150 fs/seq_file.c:230
 seq_read+0x7a6/0x990 fs/seq_file.c:162
 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]
 __ia32_sys_read+0xdb/0x120 fs/read_write.c:627
 do_syscall_32_irqs_on arch/x86/entry/common.c:113 [inline]
 __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:179
 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:204
 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:247
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:737 [inline]
 slab_alloc_node mm/slub.c:3244 [inline]
 slab_alloc mm/slub.c:3252 [inline]
 kmem_cache_alloc_trace+0xaa1/0x1120 mm/slub.c:3269
 kmalloc include/linux/slab.h:581 [inline]
 kmalloc_array include/linux/slab.h:620 [inline]
 proc_pid_stack+0x103/0x4d0 fs/proc/base.c:448
 proc_single_show+0x1cc/0x370 fs/proc/base.c:778
 seq_read_iter+0xaac/0x2150 fs/seq_file.c:230
 seq_read+0x7a6/0x990 fs/seq_file.c:162
 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]
 __ia32_sys_read+0xdb/0x120 fs/read_write.c:627
 do_syscall_32_irqs_on arch/x86/entry/common.c:113 [inline]
 __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:179
 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:204
 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:247
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

CPU: 1 PID: 11879 Comm: syz-executor.5 Not tainted 5.17.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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