=====================================================
BUG: KMSAN: uninit-value in check_pointer lib/vsprintf.c:705 [inline]
BUG: KMSAN: uninit-value in string+0x3d2/0x700 lib/vsprintf.c:717
 check_pointer lib/vsprintf.c:705 [inline]
 string+0x3d2/0x700 lib/vsprintf.c:717
 vsnprintf+0x224f/0x36a0 lib/vsprintf.c:2797
 seq_vprintf fs/seq_file.c:407 [inline]
 seq_printf+0x301/0x500 fs/seq_file.c:422
 arp_format_neigh_entry net/ipv4/arp.c:1373 [inline]
 arp_seq_show+0x18ef/0x1d00 net/ipv4/arp.c:1402
 seq_read_iter+0x1589/0x2160 fs/seq_file.c:272
 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:483
 ksys_read+0x28c/0x520 fs/read_write.c:623
 __do_sys_read fs/read_write.c:633 [inline]
 __se_sys_read fs/read_write.c:631 [inline]
 __x64_sys_read+0xdb/0x120 fs/read_write.c:631
 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 ----filename@process_measurement created at:
 process_measurement+0x1c8/0x38d0 security/integrity/ima/ima_main.c:209
 ima_file_check+0x131/0x170 security/integrity/ima/ima_main.c:516
=====================================================
Kernel panic - not syncing: panic_on_kmsan set ...
CPU: 1 PID: 16047 Comm: syz-executor.1 Tainted: G    B             5.15.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1ff/0x28e lib/dump_stack.c:106
 dump_stack+0x25/0x28 lib/dump_stack.c:113
 panic+0x44f/0xdeb kernel/panic.c:232
 kmsan_report+0x2ee/0x300 mm/kmsan/report.c:168
 __msan_warning+0xa9/0xf0 mm/kmsan/instrumentation.c:199
 check_pointer lib/vsprintf.c:705 [inline]
 string+0x3d2/0x700 lib/vsprintf.c:717
 vsnprintf+0x224f/0x36a0 lib/vsprintf.c:2797
 seq_vprintf fs/seq_file.c:407 [inline]
 seq_printf+0x301/0x500 fs/seq_file.c:422
 arp_format_neigh_entry net/ipv4/arp.c:1373 [inline]
 arp_seq_show+0x18ef/0x1d00 net/ipv4/arp.c:1402
 seq_read_iter+0x1589/0x2160 fs/seq_file.c:272
 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:483
 ksys_read+0x28c/0x520 fs/read_write.c:623
 __do_sys_read fs/read_write.c:633 [inline]
 __se_sys_read fs/read_write.c:631 [inline]
 __x64_sys_read+0xdb/0x120 fs/read_write.c:631
 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
RIP: 0033:0x7f3b27e4b8d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3b253c2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f3b27f4ff60 RCX: 00007f3b27e4b8d9
RDX: 0000000000002020 RSI: 00000000200002c0 RDI: 0000000000000004
RBP: 00007f3b27ea5cb4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3b28483b2f R14: 00007f3b253c2300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..