Date
Feb. 5, 2025, 2:09 p.m.
Environment | |
---|---|
qemu-arm64 |
[ 182.600304] ================================================================== [ 182.602158] BUG: KASAN: slab-use-after-free in strcmp+0x2c/0x78 [ 182.604882] Read of size 1 at addr ffff0000c5f6ec10 by task kunit_try_catch/204 [ 182.606840] [ 182.607745] CPU: 0 PID: 204 Comm: kunit_try_catch Tainted: G B N 6.6.76-rc1 #1 [ 182.609893] Hardware name: linux,dummy-virt (DT) [ 182.611278] Call trace: [ 182.612132] dump_backtrace+0x9c/0x128 [ 182.613397] show_stack+0x20/0x38 [ 182.614448] dump_stack_lvl+0x60/0xb0 [ 182.615562] print_report+0xf8/0x5d8 [ 182.616541] kasan_report+0xc8/0x118 [ 182.618446] __asan_load1+0x60/0x70 [ 182.619690] strcmp+0x2c/0x78 [ 182.620691] kasan_strings+0x12c/0x478 [ 182.622441] kunit_try_run_case+0xf8/0x260 [ 182.624097] kunit_generic_run_threadfn_adapter+0x38/0x60 [ 182.625815] kthread+0x18c/0x1a8 [ 182.627117] ret_from_fork+0x10/0x20 [ 182.628205] [ 182.628718] Allocated by task 204: [ 182.629786] kasan_save_stack+0x3c/0x68 [ 182.630977] kasan_set_track+0x2c/0x40 [ 182.632109] kasan_save_alloc_info+0x24/0x38 [ 182.633770] __kasan_kmalloc+0xd4/0xd8 [ 182.634884] kmalloc_trace+0x68/0x130 [ 182.636053] kasan_strings+0xa0/0x478 [ 182.637906] kunit_try_run_case+0xf8/0x260 [ 182.639612] kunit_generic_run_threadfn_adapter+0x38/0x60 [ 182.641122] kthread+0x18c/0x1a8 [ 182.642557] ret_from_fork+0x10/0x20 [ 182.643683] [ 182.644321] Freed by task 204: [ 182.645645] kasan_save_stack+0x3c/0x68 [ 182.647001] kasan_set_track+0x2c/0x40 [ 182.648256] kasan_save_free_info+0x38/0x60 [ 182.649836] __kasan_slab_free+0x100/0x170 [ 182.651317] __kmem_cache_free+0x170/0x2e0 [ 182.652511] kfree+0x74/0x138 [ 182.653516] kasan_strings+0xbc/0x478 [ 182.655791] kunit_try_run_case+0xf8/0x260 [ 182.657123] kunit_generic_run_threadfn_adapter+0x38/0x60 [ 182.658785] kthread+0x18c/0x1a8 [ 182.659810] ret_from_fork+0x10/0x20 [ 182.661042] [ 182.662030] The buggy address belongs to the object at ffff0000c5f6ec00 [ 182.662030] which belongs to the cache kmalloc-32 of size 32 [ 182.665541] The buggy address is located 16 bytes inside of [ 182.665541] freed 32-byte region [ffff0000c5f6ec00, ffff0000c5f6ec20) [ 182.667448] [ 182.667976] The buggy address belongs to the physical page: [ 182.669347] page:00000000e8269612 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105f6e [ 182.672014] flags: 0xbfffc0000000800(slab|node=0|zone=2|lastcpupid=0xffff) [ 182.674021] page_type: 0xffffffff() [ 182.675457] raw: 0bfffc0000000800 ffff0000c0001500 dead000000000122 0000000000000000 [ 182.677420] raw: 0000000000000000 0000000080400040 00000001ffffffff 0000000000000000 [ 182.680422] page dumped because: kasan: bad access detected [ 182.682133] [ 182.682659] Memory state around the buggy address: [ 182.683938] ffff0000c5f6eb00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 182.685888] ffff0000c5f6eb80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 182.687619] >ffff0000c5f6ec00: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 182.689219] ^ [ 182.691001] ffff0000c5f6ec80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 182.692997] ffff0000c5f6ed00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 182.694611] ==================================================================