Date
July 18, 2025, 11:11 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.285180] ================================================================== [ 16.285527] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 16.285818] Read of size 121 at addr ffff8881039ee400 by task kunit_try_catch/304 [ 16.286141] [ 16.286293] CPU: 1 UID: 0 PID: 304 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 16.286348] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.286360] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.286381] Call Trace: [ 16.286395] <TASK> [ 16.286411] dump_stack_lvl+0x73/0xb0 [ 16.286441] print_report+0xd1/0x610 [ 16.286464] ? __virt_addr_valid+0x1db/0x2d0 [ 16.286487] ? _copy_to_user+0x3c/0x70 [ 16.286506] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.286541] ? _copy_to_user+0x3c/0x70 [ 16.286570] kasan_report+0x141/0x180 [ 16.286593] ? _copy_to_user+0x3c/0x70 [ 16.286628] kasan_check_range+0x10c/0x1c0 [ 16.286652] __kasan_check_read+0x15/0x20 [ 16.286672] _copy_to_user+0x3c/0x70 [ 16.286692] copy_user_test_oob+0x364/0x10f0 [ 16.286719] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.286745] ? __kasan_check_write+0x18/0x20 [ 16.286765] ? queued_spin_lock_slowpath+0x116/0xb40 [ 16.286794] ? __pfx_queued_spin_lock_slowpath+0x10/0x10 [ 16.286819] ? __pfx_read_tsc+0x10/0x10 [ 16.286841] ? ktime_get_ts64+0x86/0x230 [ 16.286874] kunit_try_run_case+0x1a5/0x480 [ 16.286898] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.286922] ? _raw_spin_lock_irqsave+0xf9/0x100 [ 16.286956] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.286980] ? __kthread_parkme+0x82/0x180 [ 16.287001] ? preempt_count_sub+0x50/0x80 [ 16.287026] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.287051] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.287075] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.287100] kthread+0x337/0x6f0 [ 16.287120] ? trace_preempt_on+0x20/0xc0 [ 16.287143] ? __pfx_kthread+0x10/0x10 [ 16.287164] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.287188] ? calculate_sigpending+0x7b/0xa0 [ 16.287212] ? __pfx_kthread+0x10/0x10 [ 16.287234] ret_from_fork+0x116/0x1d0 [ 16.287253] ? __pfx_kthread+0x10/0x10 [ 16.287274] ret_from_fork_asm+0x1a/0x30 [ 16.287305] </TASK> [ 16.287316] [ 16.295138] Allocated by task 304: [ 16.295276] kasan_save_stack+0x45/0x70 [ 16.295454] kasan_save_track+0x18/0x40 [ 16.295823] kasan_save_alloc_info+0x3b/0x50 [ 16.296063] __kasan_kmalloc+0xb7/0xc0 [ 16.296273] __kmalloc_noprof+0x1c9/0x500 [ 16.296482] kunit_kmalloc_array+0x25/0x60 [ 16.296697] copy_user_test_oob+0xab/0x10f0 [ 16.296920] kunit_try_run_case+0x1a5/0x480 [ 16.297072] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.297359] kthread+0x337/0x6f0 [ 16.297529] ret_from_fork+0x116/0x1d0 [ 16.297713] ret_from_fork_asm+0x1a/0x30 [ 16.297879] [ 16.298070] The buggy address belongs to the object at ffff8881039ee400 [ 16.298070] which belongs to the cache kmalloc-128 of size 128 [ 16.298610] The buggy address is located 0 bytes inside of [ 16.298610] allocated 120-byte region [ffff8881039ee400, ffff8881039ee478) [ 16.299084] [ 16.299158] The buggy address belongs to the physical page: [ 16.299343] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039ee [ 16.299713] flags: 0x200000000000000(node=0|zone=2) [ 16.299946] page_type: f5(slab) [ 16.300144] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.300460] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.300860] page dumped because: kasan: bad access detected [ 16.301107] [ 16.301206] Memory state around the buggy address: [ 16.301400] ffff8881039ee300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.301619] ffff8881039ee380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.301834] >ffff8881039ee400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.302048] ^ [ 16.302404] ffff8881039ee480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.302946] ffff8881039ee500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.303254] ==================================================================