Date
July 15, 2025, 11:09 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.498944] ================================================================== [ 16.499569] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.500264] Write of size 121 at addr ffff8881038e2900 by task kunit_try_catch/302 [ 16.501151] [ 16.501365] CPU: 1 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 16.501416] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.501430] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.501462] Call Trace: [ 16.501477] <TASK> [ 16.501496] dump_stack_lvl+0x73/0xb0 [ 16.501530] print_report+0xd1/0x610 [ 16.501557] ? __virt_addr_valid+0x1db/0x2d0 [ 16.501583] ? _copy_from_user+0x32/0x90 [ 16.501604] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.501629] ? _copy_from_user+0x32/0x90 [ 16.501651] kasan_report+0x141/0x180 [ 16.501674] ? _copy_from_user+0x32/0x90 [ 16.501700] kasan_check_range+0x10c/0x1c0 [ 16.501726] __kasan_check_write+0x18/0x20 [ 16.501746] _copy_from_user+0x32/0x90 [ 16.501780] copy_user_test_oob+0x2be/0x10f0 [ 16.501809] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.501834] ? finish_task_switch.isra.0+0x153/0x700 [ 16.501860] ? __switch_to+0x47/0xf50 [ 16.501888] ? __schedule+0x10cc/0x2b60 [ 16.501912] ? __pfx_read_tsc+0x10/0x10 [ 16.501936] ? ktime_get_ts64+0x86/0x230 [ 16.501963] kunit_try_run_case+0x1a5/0x480 [ 16.501988] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.502014] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.502040] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.502066] ? __kthread_parkme+0x82/0x180 [ 16.502088] ? preempt_count_sub+0x50/0x80 [ 16.502113] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.502141] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.502167] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.502195] kthread+0x337/0x6f0 [ 16.502216] ? trace_preempt_on+0x20/0xc0 [ 16.502243] ? __pfx_kthread+0x10/0x10 [ 16.502265] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.502289] ? calculate_sigpending+0x7b/0xa0 [ 16.502316] ? __pfx_kthread+0x10/0x10 [ 16.502339] ret_from_fork+0x116/0x1d0 [ 16.502360] ? __pfx_kthread+0x10/0x10 [ 16.502387] ret_from_fork_asm+0x1a/0x30 [ 16.502420] </TASK> [ 16.502433] [ 16.509833] Allocated by task 302: [ 16.510018] kasan_save_stack+0x45/0x70 [ 16.510218] kasan_save_track+0x18/0x40 [ 16.510418] kasan_save_alloc_info+0x3b/0x50 [ 16.510585] __kasan_kmalloc+0xb7/0xc0 [ 16.510749] __kmalloc_noprof+0x1c9/0x500 [ 16.510967] kunit_kmalloc_array+0x25/0x60 [ 16.511184] copy_user_test_oob+0xab/0x10f0 [ 16.511349] kunit_try_run_case+0x1a5/0x480 [ 16.511633] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.511876] kthread+0x337/0x6f0 [ 16.512032] ret_from_fork+0x116/0x1d0 [ 16.512191] ret_from_fork_asm+0x1a/0x30 [ 16.512391] [ 16.512504] The buggy address belongs to the object at ffff8881038e2900 [ 16.512504] which belongs to the cache kmalloc-128 of size 128 [ 16.512978] The buggy address is located 0 bytes inside of [ 16.512978] allocated 120-byte region [ffff8881038e2900, ffff8881038e2978) [ 16.513473] [ 16.513548] The buggy address belongs to the physical page: [ 16.513724] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1038e2 [ 16.513976] flags: 0x200000000000000(node=0|zone=2) [ 16.514141] page_type: f5(slab) [ 16.514285] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.514633] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.514976] page dumped because: kasan: bad access detected [ 16.515273] [ 16.515369] Memory state around the buggy address: [ 16.515655] ffff8881038e2800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.515930] ffff8881038e2880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.516153] >ffff8881038e2900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.516371] ^ [ 16.517017] ffff8881038e2980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.517341] ffff8881038e2a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.517742] ==================================================================