syzbot

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BUG: KMSAN: uninit-value in inode_set_ctime_to_ts+0x1eb/0x3f0 fs/inode.c:2777
 inode_set_ctime_to_ts+0x1eb/0x3f0 fs/inode.c:2777
 setattr_copy+0xc20/0xd30 fs/attr.c:368
 shmem_setattr+0x1233/0x1a00 mm/shmem.c:1385
 notify_change+0x1abe/0x1bd0 fs/attr.c:556
 vfs_utimes+0x72c/0xaf0 fs/utimes.c:67
 do_utimes_path fs/utimes.c:99 [inline]
 do_utimes+0x2d8/0x4f0 fs/utimes.c:139
 __do_sys_utimensat fs/utimes.c:158 [inline]
 __se_sys_utimensat fs/utimes.c:142 [inline]
 __x64_sys_utimensat+0x1b8/0x450 fs/utimes.c:142
 x64_sys_call+0x370c/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:281
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 inode_set_ctime_to_ts+0x1e4/0x3f0 fs/inode.c:2777
 setattr_copy+0xc20/0xd30 fs/attr.c:368
 shmem_setattr+0x1233/0x1a00 mm/shmem.c:1385
 notify_change+0x1abe/0x1bd0 fs/attr.c:556
 vfs_utimes+0x72c/0xaf0 fs/utimes.c:67
 do_utimes_path fs/utimes.c:99 [inline]
 do_utimes+0x2d8/0x4f0 fs/utimes.c:139
 __do_sys_utimensat fs/utimes.c:158 [inline]
 __se_sys_utimensat fs/utimes.c:142 [inline]
 __x64_sys_utimensat+0x1b8/0x450 fs/utimes.c:142
 x64_sys_call+0x370c/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:281
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 inode_set_ctime_to_ts+0x19f/0x3f0 fs/inode.c:-1
 setattr_copy+0xc20/0xd30 fs/attr.c:368
 shmem_setattr+0x1233/0x1a00 mm/shmem.c:1385
 notify_change+0x1abe/0x1bd0 fs/attr.c:556
 vfs_utimes+0x72c/0xaf0 fs/utimes.c:67
 do_utimes_path fs/utimes.c:99 [inline]
 do_utimes+0x2d8/0x4f0 fs/utimes.c:139
 __do_sys_utimensat fs/utimes.c:158 [inline]
 __se_sys_utimensat fs/utimes.c:142 [inline]
 __x64_sys_utimensat+0x1b8/0x450 fs/utimes.c:142
 x64_sys_call+0x370c/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:281
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable newattrs created at:
 vfs_utimes+0x43/0xaf0 fs/utimes.c:24
 do_utimes_path fs/utimes.c:99 [inline]
 do_utimes+0x2d8/0x4f0 fs/utimes.c:139

CPU: 1 UID: 0 PID: 6275 Comm: udevd Tainted: G        W    L      syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
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