Date
Nov. 27, 2024, 3:37 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 32.781089] ================================================================== [ 32.781683] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x4a/0x70 [ 32.782263] Read of size 121 at addr ffff888102a58900 by task kunit_try_catch/293 [ 32.783019] [ 32.783393] CPU: 0 UID: 0 PID: 293 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 32.784285] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.784645] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 32.785616] Call Trace: [ 32.786272] <TASK> [ 32.786751] dump_stack_lvl+0x73/0xb0 [ 32.787468] print_report+0xd1/0x640 [ 32.787963] ? __virt_addr_valid+0x1db/0x2d0 [ 32.788776] ? kasan_complete_mode_report_info+0x2a/0x200 [ 32.789499] kasan_report+0x102/0x140 [ 32.789913] ? _copy_to_user+0x4a/0x70 [ 32.790654] ? _copy_to_user+0x4a/0x70 [ 32.791417] kasan_check_range+0x10c/0x1c0 [ 32.792197] __kasan_check_read+0x15/0x20 [ 32.792600] _copy_to_user+0x4a/0x70 [ 32.792928] copy_user_test_oob+0x365/0x10f0 [ 32.793489] ? __pfx_copy_user_test_oob+0x10/0x10 [ 32.794246] ? finish_task_switch.isra.0+0x153/0x700 [ 32.794786] ? __switch_to+0x5d9/0xf60 [ 32.795629] ? __schedule+0xc3e/0x2790 [ 32.796539] ? __pfx_read_tsc+0x10/0x10 [ 32.797030] ? ktime_get_ts64+0x84/0x230 [ 32.797422] kunit_try_run_case+0x1b3/0x490 [ 32.797900] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.798706] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 32.799367] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 32.799732] ? __kthread_parkme+0x82/0x160 [ 32.800326] ? preempt_count_sub+0x50/0x80 [ 32.800893] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.801416] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 32.802021] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.802602] kthread+0x257/0x310 [ 32.803062] ? __pfx_kthread+0x10/0x10 [ 32.803469] ret_from_fork+0x41/0x80 [ 32.803972] ? __pfx_kthread+0x10/0x10 [ 32.804482] ret_from_fork_asm+0x1a/0x30 [ 32.804937] </TASK> [ 32.805320] [ 32.805545] Allocated by task 293: [ 32.806012] kasan_save_stack+0x3d/0x60 [ 32.806388] kasan_save_track+0x18/0x40 [ 32.806881] kasan_save_alloc_info+0x3b/0x50 [ 32.807592] __kasan_kmalloc+0xb7/0xc0 [ 32.808055] __kmalloc_noprof+0x1c4/0x500 [ 32.808445] kunit_kmalloc_array+0x25/0x60 [ 32.809071] copy_user_test_oob+0xac/0x10f0 [ 32.809444] kunit_try_run_case+0x1b3/0x490 [ 32.809890] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.810641] kthread+0x257/0x310 [ 32.811276] ret_from_fork+0x41/0x80 [ 32.811562] ret_from_fork_asm+0x1a/0x30 [ 32.812081] [ 32.812350] The buggy address belongs to the object at ffff888102a58900 [ 32.812350] which belongs to the cache kmalloc-128 of size 128 [ 32.813263] The buggy address is located 0 bytes inside of [ 32.813263] allocated 120-byte region [ffff888102a58900, ffff888102a58978) [ 32.814459] [ 32.814812] The buggy address belongs to the physical page: [ 32.815278] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a58 [ 32.816213] flags: 0x200000000000000(node=0|zone=2) [ 32.816548] page_type: f5(slab) [ 32.816795] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 32.817754] raw: 0000000000000000 0000000080100010 00000001f5000000 0000000000000000 [ 32.818619] page dumped because: kasan: bad access detected [ 32.819132] [ 32.819512] Memory state around the buggy address: [ 32.820137] ffff888102a58800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.820863] ffff888102a58880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.821349] >ffff888102a58900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 32.822219] ^ [ 32.822917] ffff888102a58980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.823629] ffff888102a58a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.824401] ==================================================================