Date
July 1, 2025, 11:08 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.473184] ================================================================== [ 15.473532] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 15.473882] Read of size 121 at addr ffff88810258dd00 by task kunit_try_catch/302 [ 15.474454] [ 15.474575] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 15.474625] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.474638] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.474662] Call Trace: [ 15.474678] <TASK> [ 15.474702] dump_stack_lvl+0x73/0xb0 [ 15.474734] print_report+0xd1/0x650 [ 15.474760] ? __virt_addr_valid+0x1db/0x2d0 [ 15.474785] ? _copy_to_user+0x3c/0x70 [ 15.474805] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.474828] ? _copy_to_user+0x3c/0x70 [ 15.474848] kasan_report+0x141/0x180 [ 15.474872] ? _copy_to_user+0x3c/0x70 [ 15.474896] kasan_check_range+0x10c/0x1c0 [ 15.474920] __kasan_check_read+0x15/0x20 [ 15.474940] _copy_to_user+0x3c/0x70 [ 15.474960] copy_user_test_oob+0x364/0x10f0 [ 15.474985] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.475009] ? finish_task_switch.isra.0+0x153/0x700 [ 15.475033] ? __switch_to+0x47/0xf50 [ 15.475060] ? __schedule+0x10cc/0x2b60 [ 15.475083] ? __pfx_read_tsc+0x10/0x10 [ 15.475105] ? ktime_get_ts64+0x86/0x230 [ 15.475130] kunit_try_run_case+0x1a5/0x480 [ 15.475154] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.475178] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.475203] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.475228] ? __kthread_parkme+0x82/0x180 [ 15.475251] ? preempt_count_sub+0x50/0x80 [ 15.475274] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.475300] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.475324] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.475349] kthread+0x337/0x6f0 [ 15.475368] ? trace_preempt_on+0x20/0xc0 [ 15.475405] ? __pfx_kthread+0x10/0x10 [ 15.475427] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.475449] ? calculate_sigpending+0x7b/0xa0 [ 15.475473] ? __pfx_kthread+0x10/0x10 [ 15.475496] ret_from_fork+0x116/0x1d0 [ 15.475515] ? __pfx_kthread+0x10/0x10 [ 15.475536] ret_from_fork_asm+0x1a/0x30 [ 15.475567] </TASK> [ 15.475595] [ 15.482597] Allocated by task 302: [ 15.482891] kasan_save_stack+0x45/0x70 [ 15.483103] kasan_save_track+0x18/0x40 [ 15.483298] kasan_save_alloc_info+0x3b/0x50 [ 15.483512] __kasan_kmalloc+0xb7/0xc0 [ 15.483709] __kmalloc_noprof+0x1c9/0x500 [ 15.483886] kunit_kmalloc_array+0x25/0x60 [ 15.484083] copy_user_test_oob+0xab/0x10f0 [ 15.484275] kunit_try_run_case+0x1a5/0x480 [ 15.484452] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.484630] kthread+0x337/0x6f0 [ 15.484762] ret_from_fork+0x116/0x1d0 [ 15.484958] ret_from_fork_asm+0x1a/0x30 [ 15.485155] [ 15.485252] The buggy address belongs to the object at ffff88810258dd00 [ 15.485252] which belongs to the cache kmalloc-128 of size 128 [ 15.485865] The buggy address is located 0 bytes inside of [ 15.485865] allocated 120-byte region [ffff88810258dd00, ffff88810258dd78) [ 15.486222] [ 15.486301] The buggy address belongs to the physical page: [ 15.486490] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10258d [ 15.487175] flags: 0x200000000000000(node=0|zone=2) [ 15.487432] page_type: f5(slab) [ 15.487605] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.487944] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.488173] page dumped because: kasan: bad access detected [ 15.488442] [ 15.488538] Memory state around the buggy address: [ 15.488993] ffff88810258dc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.489216] ffff88810258dc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.489468] >ffff88810258dd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.489953] ^ [ 15.490266] ffff88810258dd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.490545] ffff88810258de00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.490833] ==================================================================