Date
Dec. 4, 2024, 3:07 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 30.560433] ================================================================== [ 30.562451] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x33/0xa0 [ 30.563165] Write of size 121 at addr ffff8881029a4b00 by task kunit_try_catch/293 [ 30.563937] [ 30.564381] CPU: 1 UID: 0 PID: 293 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241204 #1 [ 30.565672] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.566673] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 30.567440] Call Trace: [ 30.567731] <TASK> [ 30.568031] dump_stack_lvl+0x73/0xb0 [ 30.568452] print_report+0xd1/0x640 [ 30.568971] ? __virt_addr_valid+0x1db/0x2d0 [ 30.569350] ? kasan_complete_mode_report_info+0x2a/0x200 [ 30.570218] kasan_report+0x102/0x140 [ 30.570783] ? _copy_from_user+0x33/0xa0 [ 30.571341] ? _copy_from_user+0x33/0xa0 [ 30.571810] kasan_check_range+0x10c/0x1c0 [ 30.572540] __kasan_check_write+0x18/0x20 [ 30.573186] _copy_from_user+0x33/0xa0 [ 30.573792] copy_user_test_oob+0x2bf/0x10f0 [ 30.574457] ? __pfx_copy_user_test_oob+0x10/0x10 [ 30.574862] ? finish_task_switch.isra.0+0x153/0x700 [ 30.575671] ? __switch_to+0x5d9/0xf60 [ 30.576275] ? __schedule+0xc3e/0x2790 [ 30.576927] ? __pfx_read_tsc+0x10/0x10 [ 30.577594] ? ktime_get_ts64+0x86/0x230 [ 30.577990] kunit_try_run_case+0x1b3/0x490 [ 30.578533] ? __pfx_kunit_try_run_case+0x10/0x10 [ 30.578906] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 30.579824] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 30.580577] ? __kthread_parkme+0x82/0x160 [ 30.580998] ? preempt_count_sub+0x50/0x80 [ 30.581423] ? __pfx_kunit_try_run_case+0x10/0x10 [ 30.581876] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 30.582685] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 30.583243] kthread+0x257/0x310 [ 30.583741] ? __pfx_kthread+0x10/0x10 [ 30.584327] ret_from_fork+0x41/0x80 [ 30.584778] ? __pfx_kthread+0x10/0x10 [ 30.585080] ret_from_fork_asm+0x1a/0x30 [ 30.585700] </TASK> [ 30.586372] [ 30.586556] Allocated by task 293: [ 30.586837] kasan_save_stack+0x3d/0x60 [ 30.587384] kasan_save_track+0x18/0x40 [ 30.588275] kasan_save_alloc_info+0x3b/0x50 [ 30.588656] __kasan_kmalloc+0xb7/0xc0 [ 30.589355] __kmalloc_noprof+0x1c4/0x500 [ 30.589764] kunit_kmalloc_array+0x25/0x60 [ 30.590638] copy_user_test_oob+0xac/0x10f0 [ 30.591144] kunit_try_run_case+0x1b3/0x490 [ 30.591714] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 30.593059] kthread+0x257/0x310 [ 30.593411] ret_from_fork+0x41/0x80 [ 30.593883] ret_from_fork_asm+0x1a/0x30 [ 30.594738] [ 30.595035] The buggy address belongs to the object at ffff8881029a4b00 [ 30.595035] which belongs to the cache kmalloc-128 of size 128 [ 30.596272] The buggy address is located 0 bytes inside of [ 30.596272] allocated 120-byte region [ffff8881029a4b00, ffff8881029a4b78) [ 30.597785] [ 30.598245] The buggy address belongs to the physical page: [ 30.598943] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029a4 [ 30.600158] flags: 0x200000000000000(node=0|zone=2) [ 30.600715] page_type: f5(slab) [ 30.601102] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 30.601953] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 30.602936] page dumped because: kasan: bad access detected [ 30.603494] [ 30.603739] Memory state around the buggy address: [ 30.604204] ffff8881029a4a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.605198] ffff8881029a4a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.606031] >ffff8881029a4b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 30.606766] ^ [ 30.607539] ffff8881029a4b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.608413] ffff8881029a4c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.609031] ==================================================================