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BUG: KMSAN: uninit-value in inode_set_ctime_to_ts+0x1eb/0x3b0 fs/inode.c:2770
 inode_set_ctime_to_ts+0x1eb/0x3b0 fs/inode.c:2770
 setattr_copy+0xc20/0xd30 fs/attr.c:368
 kernfs_iop_setattr+0x302/0x340 fs/kernfs/inode.c:131
 notify_change+0x1abe/0x1bd0 fs/attr.c:556
 do_truncate+0x28f/0x310 fs/open.c:68
 handle_truncate fs/namei.c:4307 [inline]
 do_open fs/namei.c:4703 [inline]
 path_openat+0x5bcd/0x64c0 fs/namei.c:4858
 do_file_open+0x2aa/0x680 fs/namei.c:4887
 do_sys_openat2+0x163/0x380 fs/open.c:1364
 do_sys_open fs/open.c:1370 [inline]
 __do_sys_openat fs/open.c:1386 [inline]
 __se_sys_openat fs/open.c:1381 [inline]
 __x64_sys_openat+0x240/0x300 fs/open.c:1381
 x64_sys_call+0x2445/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:258
 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+0x1e4/0x3b0 fs/inode.c:2770
 setattr_copy+0xc20/0xd30 fs/attr.c:368
 kernfs_iop_setattr+0x302/0x340 fs/kernfs/inode.c:131
 notify_change+0x1abe/0x1bd0 fs/attr.c:556
 do_truncate+0x28f/0x310 fs/open.c:68
 handle_truncate fs/namei.c:4307 [inline]
 do_open fs/namei.c:4703 [inline]
 path_openat+0x5bcd/0x64c0 fs/namei.c:4858
 do_file_open+0x2aa/0x680 fs/namei.c:4887
 do_sys_openat2+0x163/0x380 fs/open.c:1364
 do_sys_open fs/open.c:1370 [inline]
 __do_sys_openat fs/open.c:1386 [inline]
 __se_sys_openat fs/open.c:1381 [inline]
 __x64_sys_openat+0x240/0x300 fs/open.c:1381
 x64_sys_call+0x2445/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:258
 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/0x3b0 fs/inode.c:-1
 setattr_copy+0xc20/0xd30 fs/attr.c:368
 kernfs_iop_setattr+0x302/0x340 fs/kernfs/inode.c:131
 notify_change+0x1abe/0x1bd0 fs/attr.c:556
 do_truncate+0x28f/0x310 fs/open.c:68
 handle_truncate fs/namei.c:4307 [inline]
 do_open fs/namei.c:4703 [inline]
 path_openat+0x5bcd/0x64c0 fs/namei.c:4858
 do_file_open+0x2aa/0x680 fs/namei.c:4887
 do_sys_openat2+0x163/0x380 fs/open.c:1364
 do_sys_open fs/open.c:1370 [inline]
 __do_sys_openat fs/open.c:1386 [inline]
 __se_sys_openat fs/open.c:1381 [inline]
 __x64_sys_openat+0x240/0x300 fs/open.c:1381
 x64_sys_call+0x2445/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:258
 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:
 do_truncate+0x4c/0x310 fs/open.c:43
 handle_truncate fs/namei.c:4307 [inline]
 do_open fs/namei.c:4703 [inline]
 path_openat+0x5bcd/0x64c0 fs/namei.c:4858

CPU: 0 UID: 0 PID: 5131 Comm: udevd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
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