vfs_create_mount+0xec/0xa80 fs/namespace.c:1017 do_new_mount_fc fs/namespace.c:2977 [inline] do_new_mount+0xa78/0x16f0 fs/namespace.c:3042 path_mount+0x1021/0x28b0 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x8a8/0x9d0 fs/namespace.c:3568 __x64_sys_mount+0x15d/0x1b0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x51/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x44/0xae Uninit was created at: slab_post_alloc_hook mm/slab.h:754 [inline] slab_alloc_node mm/slub.c:3231 [inline] slab_alloc mm/slub.c:3239 [inline] __kmalloc_track_caller+0xc60/0x1310 mm/slub.c:4931 kmemdup_nul+0xb3/0x1c0 mm/util.c:151 vfs_parse_fs_string+0x16f/0x300 fs/fs_context.c:178 ===================================================== BUG: KMSAN: uninit-value in __is_kernel include/asm-generic/sections.h:221 [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:342 __is_kernel include/asm-generic/sections.h:221 [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:342 __sprint_symbol+0x166/0x650 kernel/kallsyms.c:455 sprint_symbol_build_id+0x7c/0x90 kernel/kallsyms.c:515 symbol_string+0x2bc/0x6e0 lib/vsprintf.c:1021 pointer+0x1356/0x1f70 lib/vsprintf.c:2410 vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2810 vprintk_store+0x537/0x2150 kernel/printk/printk.c:2158 vprintk_emit+0x28b/0xab0 kernel/printk/printk.c:2256 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2283 vprintk+0x15f/0x180 kernel/printk/printk_safe.c:50 _printk+0x18d/0x1cf kernel/printk/printk.c:2293 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:1104 copy_tree+0x995/0x1e00 fs/namespace.c:1921 propagate_one+0x95a/0xe80 fs/pnode.c:261 propagate_mnt+0x1fd/0x13f0 fs/pnode.c:308 attach_recursive_mnt+0x10c2/0x3ac0 fs/namespace.c:2229 graft_tree+0x302/0x330 fs/namespace.c:2337 do_loopback+0x64a/0x950 fs/namespace.c:2452 path_mount+0xcb2/0x28b0 fs/namespace.c:3364 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x8a8/0x9d0 fs/namespace.c:3568 __x64_sys_mount+0x15d/0x1b0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x51/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x44/0xae Local variable rf created at: __schedule+0x53/0x21c0 kernel/sched/core.c:6271 schedule+0x195/0x270 kernel/sched/core.c:6460 CPU: 0 PID: 29121 Comm: syz-executor.5 Not tainted 5.18.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 =====================================================