Date
July 8, 2025, 4:38 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.389114] ================================================================== [ 15.390025] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 15.390456] Write of size 121 at addr ffff888103606900 by task kunit_try_catch/305 [ 15.391123] [ 15.391258] CPU: 0 UID: 0 PID: 305 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT(voluntary) [ 15.391311] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.391326] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.391353] Call Trace: [ 15.391368] <TASK> [ 15.391388] dump_stack_lvl+0x73/0xb0 [ 15.391420] print_report+0xd1/0x650 [ 15.391448] ? __virt_addr_valid+0x1db/0x2d0 [ 15.391473] ? _copy_from_user+0x32/0x90 [ 15.391495] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.391521] ? _copy_from_user+0x32/0x90 [ 15.391543] kasan_report+0x141/0x180 [ 15.391567] ? _copy_from_user+0x32/0x90 [ 15.391605] kasan_check_range+0x10c/0x1c0 [ 15.391628] __kasan_check_write+0x18/0x20 [ 15.391650] _copy_from_user+0x32/0x90 [ 15.391673] copy_user_test_oob+0x2be/0x10f0 [ 15.391698] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.391719] ? finish_task_switch.isra.0+0x153/0x700 [ 15.391745] ? __switch_to+0x5d9/0xf60 [ 15.391769] ? dequeue_task_fair+0x156/0x4e0 [ 15.391795] ? __schedule+0x10cc/0x2b60 [ 15.391821] ? __pfx_read_tsc+0x10/0x10 [ 15.391842] ? ktime_get_ts64+0x86/0x230 [ 15.391870] kunit_try_run_case+0x1a5/0x480 [ 15.391904] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.391925] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.391953] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.391982] ? __kthread_parkme+0x82/0x180 [ 15.392032] ? preempt_count_sub+0x50/0x80 [ 15.392059] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.392083] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.392110] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.392137] kthread+0x337/0x6f0 [ 15.392155] ? trace_preempt_on+0x20/0xc0 [ 15.392183] ? __pfx_kthread+0x10/0x10 [ 15.392203] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.392227] ? calculate_sigpending+0x7b/0xa0 [ 15.392252] ? __pfx_kthread+0x10/0x10 [ 15.392273] ret_from_fork+0x41/0x80 [ 15.392295] ? __pfx_kthread+0x10/0x10 [ 15.392315] ret_from_fork_asm+0x1a/0x30 [ 15.392349] </TASK> [ 15.392362] [ 15.403306] Allocated by task 305: [ 15.403492] kasan_save_stack+0x45/0x70 [ 15.403702] kasan_save_track+0x18/0x40 [ 15.403900] kasan_save_alloc_info+0x3b/0x50 [ 15.404101] __kasan_kmalloc+0xb7/0xc0 [ 15.404285] __kmalloc_noprof+0x1c9/0x500 [ 15.404480] kunit_kmalloc_array+0x25/0x60 [ 15.405092] copy_user_test_oob+0xab/0x10f0 [ 15.405303] kunit_try_run_case+0x1a5/0x480 [ 15.405726] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.406118] kthread+0x337/0x6f0 [ 15.406497] ret_from_fork+0x41/0x80 [ 15.406823] ret_from_fork_asm+0x1a/0x30 [ 15.407157] [ 15.407258] The buggy address belongs to the object at ffff888103606900 [ 15.407258] which belongs to the cache kmalloc-128 of size 128 [ 15.408070] The buggy address is located 0 bytes inside of [ 15.408070] allocated 120-byte region [ffff888103606900, ffff888103606978) [ 15.409004] [ 15.409239] The buggy address belongs to the physical page: [ 15.409487] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103606 [ 15.409818] flags: 0x200000000000000(node=0|zone=2) [ 15.410217] page_type: f5(slab) [ 15.410388] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.410989] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.411526] page dumped because: kasan: bad access detected [ 15.411790] [ 15.411898] Memory state around the buggy address: [ 15.412117] ffff888103606800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.412416] ffff888103606880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.413131] >ffff888103606900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.413671] ^ [ 15.414111] ffff888103606980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.414423] ffff888103606a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.414969] ==================================================================