do_mount fs/namespace.c:3367 [inline]
 __do_sys_mount fs/namespace.c:3575 [inline]
 __se_sys_mount+0x8a8/0x9d0 fs/namespace.c:3552
 __x64_sys_mount+0x15d/0x1b0 fs/namespace.c:3552
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x44/0xae
Uninit was created at:
=====================================================
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_symbol_build_id+0x7c/0x90 kernel/kallsyms.c:511
 symbol_string+0x2bc/0x6e0 lib/vsprintf.c:1001
 pointer+0x136e/0x2060 lib/vsprintf.c:2392
 vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2799
 vprintk_store+0x537/0x2150 kernel/printk/printk.c:2135
 vprintk_emit+0x25c/0x950 kernel/printk/printk.c:2229
 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2256
 vprintk+0x15f/0x180 kernel/printk/printk_safe.c:50
 _printk+0x18d/0x1cf kernel/printk/printk.c:2266
 stack_trace_print+0x14a/0x1d0 kernel/stacktrace.c:33
 kmsan_print_origin+0x2be/0x2e0 mm/kmsan/report.c:131
 kmsan_internal_chain_origin+0x7f/0x120 mm/kmsan/core.c:244
 kmsan_internal_memmove_metadata+0x201/0x350 mm/kmsan/core.c:163
 __msan_memcpy+0x65/0x90 mm/kmsan/instrumentation.c:145
 kstrdup mm/util.c:62 [inline]
 kstrdup_const+0x1e4/0x260 mm/util.c:83
 alloc_vfsmnt+0x1b7/0xae0 fs/namespace.c:207
 clone_mnt+0xd4/0x1f30 fs/namespace.c:1091
 copy_tree+0x995/0x1e00 fs/namespace.c:1908
 __do_loopback+0x34d/0x6f0 fs/namespace.c:2392
 do_loopback+0x581/0x950 fs/namespace.c:2432
 path_mount+0xcb2/0x28b0 fs/namespace.c:3348
 do_mount fs/namespace.c:3367 [inline]
 __do_sys_mount fs/namespace.c:3575 [inline]
 __se_sys_mount+0x8a8/0x9d0 fs/namespace.c:3552
 __x64_sys_mount+0x15d/0x1b0 fs/namespace.c:3552
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was created at:
 __alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5429
 alloc_pages+0xa08/0xd50
 __stack_depot_save+0x462/0x4d0 lib/stackdepot.c:412
 kmsan_save_stack_with_flags mm/kmsan/core.c:85 [inline]
 kmsan_internal_chain_origin+0xc3/0x120 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
 ima_collect_measurement+0x7bf/0xbb0 security/integrity/ima/ima_api.c:267
 process_measurement+0x2672/0x38a0 security/integrity/ima/ima_main.c:337
 ima_bprm_check+0x13e/0x340 security/integrity/ima/ima_main.c:491
 security_bprm_check+0x1a3/0x1e0 security/security.c:869
 search_binary_handler fs/exec.c:1715 [inline]
 exec_binprm+0x317/0x18d0 fs/exec.c:1768
 bprm_execve+0xb57/0xef0 fs/exec.c:1837
 kernel_execve+0x1168/0x1190 fs/exec.c:1980
 run_init_process+0x331/0x340 init/main.c:1435
 try_to_run_init_process init/main.c:1442 [inline]
 kernel_init+0x36d/0x860 init/main.c:1561
 ret_from_fork+0x1f/0x30

CPU: 0 PID: 9699 Comm: syz-executor.4 Not tainted 5.17.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================