Date
July 16, 2025, 3:10 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.649037] ================================================================== [ 16.649582] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.649891] Write of size 121 at addr ffff88810307db00 by task kunit_try_catch/302 [ 16.650288] [ 16.650523] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 16.650574] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.650587] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.650610] Call Trace: [ 16.650625] <TASK> [ 16.650644] dump_stack_lvl+0x73/0xb0 [ 16.650677] print_report+0xd1/0x610 [ 16.650703] ? __virt_addr_valid+0x1db/0x2d0 [ 16.650730] ? _copy_from_user+0x32/0x90 [ 16.650751] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.650832] ? _copy_from_user+0x32/0x90 [ 16.650854] kasan_report+0x141/0x180 [ 16.651128] ? _copy_from_user+0x32/0x90 [ 16.651283] kasan_check_range+0x10c/0x1c0 [ 16.651311] __kasan_check_write+0x18/0x20 [ 16.651332] _copy_from_user+0x32/0x90 [ 16.651355] copy_user_test_oob+0x2be/0x10f0 [ 16.651384] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.651410] ? finish_task_switch.isra.0+0x153/0x700 [ 16.651437] ? __switch_to+0x47/0xf50 [ 16.651480] ? __schedule+0x10cc/0x2b60 [ 16.651504] ? __pfx_read_tsc+0x10/0x10 [ 16.651528] ? ktime_get_ts64+0x86/0x230 [ 16.651554] kunit_try_run_case+0x1a5/0x480 [ 16.651580] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.651606] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.651632] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.651658] ? __kthread_parkme+0x82/0x180 [ 16.651681] ? preempt_count_sub+0x50/0x80 [ 16.651708] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.651736] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.651773] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.651801] kthread+0x337/0x6f0 [ 16.651822] ? trace_preempt_on+0x20/0xc0 [ 16.651849] ? __pfx_kthread+0x10/0x10 [ 16.651872] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.651896] ? calculate_sigpending+0x7b/0xa0 [ 16.651922] ? __pfx_kthread+0x10/0x10 [ 16.651946] ret_from_fork+0x116/0x1d0 [ 16.651966] ? __pfx_kthread+0x10/0x10 [ 16.651989] ret_from_fork_asm+0x1a/0x30 [ 16.652022] </TASK> [ 16.652036] [ 16.662453] Allocated by task 302: [ 16.662873] kasan_save_stack+0x45/0x70 [ 16.663158] kasan_save_track+0x18/0x40 [ 16.663454] kasan_save_alloc_info+0x3b/0x50 [ 16.663653] __kasan_kmalloc+0xb7/0xc0 [ 16.663920] __kmalloc_noprof+0x1c9/0x500 [ 16.664141] kunit_kmalloc_array+0x25/0x60 [ 16.664328] copy_user_test_oob+0xab/0x10f0 [ 16.664777] kunit_try_run_case+0x1a5/0x480 [ 16.665086] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.665393] kthread+0x337/0x6f0 [ 16.665688] ret_from_fork+0x116/0x1d0 [ 16.665852] ret_from_fork_asm+0x1a/0x30 [ 16.666206] [ 16.666289] The buggy address belongs to the object at ffff88810307db00 [ 16.666289] which belongs to the cache kmalloc-128 of size 128 [ 16.667450] The buggy address is located 0 bytes inside of [ 16.667450] allocated 120-byte region [ffff88810307db00, ffff88810307db78) [ 16.668015] [ 16.668098] The buggy address belongs to the physical page: [ 16.668275] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10307d [ 16.668544] flags: 0x200000000000000(node=0|zone=2) [ 16.668874] page_type: f5(slab) [ 16.669043] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.669363] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.670036] page dumped because: kasan: bad access detected [ 16.670354] [ 16.670458] Memory state around the buggy address: [ 16.670624] ffff88810307da00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.671084] ffff88810307da80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.671447] >ffff88810307db00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.671853] ^ [ 16.672143] ffff88810307db80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.672444] ffff88810307dc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.672968] ==================================================================