On Tue, Apr 25, 2023 at 04:24:46PM -0600, Jim Cromie wrote: > Drop the __init on kmemleak_test_init(). With it, the storage is > reclaimed, but then the symbol isn't available for "%pS" rendering, > and the backtrace gets a bare pointer where the actual leak happened. > > unreferenced object 0xffff88800a2b0800 (size 1024): > comm "modprobe", pid 413, jiffies 4294953430 > hex dump (first 32 bytes): > 73 02 00 00 75 01 00 68 02 00 00 01 00 00 00 04 s...u..h........ > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > backtrace (ck 603070071): > [<00000000fabad728>] kmalloc_trace+0x26/0x90 > [<00000000ef738764>] 0xffffffffc02350a2 > [<00000000004e5795>] do_one_initcall+0x43/0x210 > [<00000000d768905e>] do_init_module+0x4a/0x210 > [<0000000087135ab5>] __do_sys_finit_module+0x93/0xf0 > [<000000004fcb1fa2>] do_syscall_64+0x34/0x80 > [<00000000c73c8d9d>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 > > with __init gone, that trace entry renders like: > > [<00000000ef738764>] kmemleak_test_init+<offset>/<size> Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
