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Muchun Song 9ab96b524d hugetlb: fix NULL pointer dereference in trace_hugetlbfs_alloc_inode 
hugetlb_file_setup() will pass a NULL @dir to hugetlbfs_get_inode(), so we
will access a NULL pointer for @dir.  Fix it and set __entry->dr to 0 if
@dir is NULL.  Because ->i_ino cannot be 0 (see get_next_ino()), there is
no confusing if user sees a 0 inode number.

Link: https://lkml.kernel.org/r/20250106033118.4640-1-songmuchun@bytedance.com
Fixes: 318580ad7f ("hugetlbfs: support tracepoint")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Reported-by: Cheung Wall <zzqq0103.hey@gmail.com>
Closes: https://lore.kernel.org/linux-mm/02858D60-43C1-4863-A84F-3C76A8AF1F15@linux.dev/T/#
Reviewed-by: Hongbo Li <lihongbo22@huawei.com>
Cc: cheung wall <zzqq0103.hey@gmail.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 		2025-01-12 19:03:36 -08:00
..
events hugetlb: fix NULL pointer dereference in trace_hugetlbfs_alloc_inode 2025-01-12 19:03:36 -08:00
misc NFS: trace: show TIMEDOUT instead of 0x6e 2024-09-01 10:04:55 -04:00
stages tracing: Add __print_dynamic_array() helper 2024-10-30 17:24:32 +01:00
bpf_probe.h tracing/bpf: Add might_fault check to syscall probes 2024-10-09 17:09:46 -04:00
define_custom_trace.h
…
define_trace.h Add Rust support for trace events: 2024-11-25 15:44:29 -08:00
perf.h tracing/perf: Add might_fault check to syscall probes 2024-10-09 17:09:46 -04:00
syscall.h
…
trace_custom_events.h
…
trace_events.h tracing/ftrace: Add might_fault check to syscall probes 2024-10-09 17:09:36 -04:00