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2024-01-03 2f7c68cb55ecb7331f2381deb497c27155f32faf

 kernel/mm/memfd.c
.. .. @@ -330,7 +330,8 @@
330 330  
331 331  	if (flags & MFD_ALLOW_SEALING) {
332 332  		file_seals = memfd_file_seals_ptr(file);
333 -		*file_seals &= ~F_SEAL_SEAL;
333 +		if (file_seals)
334 +			*file_seals &= ~F_SEAL_SEAL;
334 335  	}
335 336  
336 337  	fd_install(fd, file);

..	..	@@ -330,7 +330,8 @@
330	330
331	331	if (flags & MFD_ALLOW_SEALING) {
332	332	file_seals = memfd_file_seals_ptr(file);
333		- *file_seals &= ~F_SEAL_SEAL;
	333	+ if (file_seals)
	334	+ *file_seals &= ~F_SEAL_SEAL;
334	335	}
335	336
336	337	fd_install(fd, file);