Date
July 17, 2025, 11:10 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 17.178521] ================================================================== [ 17.178860] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 17.179146] Read of size 121 at addr ffff8881025ccc00 by task kunit_try_catch/302 [ 17.179372] [ 17.179523] CPU: 1 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 17.179578] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.179592] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 17.179614] Call Trace: [ 17.179629] <TASK> [ 17.179644] dump_stack_lvl+0x73/0xb0 [ 17.179673] print_report+0xd1/0x610 [ 17.179696] ? __virt_addr_valid+0x1db/0x2d0 [ 17.179721] ? _copy_to_user+0x3c/0x70 [ 17.179741] ? kasan_complete_mode_report_info+0x2a/0x200 [ 17.179767] ? _copy_to_user+0x3c/0x70 [ 17.179788] kasan_report+0x141/0x180 [ 17.179811] ? _copy_to_user+0x3c/0x70 [ 17.179836] kasan_check_range+0x10c/0x1c0 [ 17.179862] __kasan_check_read+0x15/0x20 [ 17.179883] _copy_to_user+0x3c/0x70 [ 17.179904] copy_user_test_oob+0x364/0x10f0 [ 17.179931] ? __pfx_copy_user_test_oob+0x10/0x10 [ 17.179959] ? __kasan_check_write+0x18/0x20 [ 17.179980] ? queued_spin_lock_slowpath+0x116/0xb40 [ 17.180006] ? irqentry_exit+0x2a/0x60 [ 17.180028] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 17.180055] ? trace_hardirqs_on+0x37/0xe0 [ 17.180085] ? __pfx_read_tsc+0x10/0x10 [ 17.180106] ? ktime_get_ts64+0x86/0x230 [ 17.180131] kunit_try_run_case+0x1a5/0x480 [ 17.180157] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.180184] ? queued_spin_lock_slowpath+0x116/0xb40 [ 17.180209] ? __kthread_parkme+0x82/0x180 [ 17.180230] ? preempt_count_sub+0x50/0x80 [ 17.180255] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.180282] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.180308] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 17.180335] kthread+0x337/0x6f0 [ 17.180355] ? trace_preempt_on+0x20/0xc0 [ 17.180380] ? __pfx_kthread+0x10/0x10 [ 17.180402] ? _raw_spin_unlock_irq+0x47/0x80 [ 17.180439] ? calculate_sigpending+0x7b/0xa0 [ 17.180464] ? __pfx_kthread+0x10/0x10 [ 17.180487] ret_from_fork+0x116/0x1d0 [ 17.180507] ? __pfx_kthread+0x10/0x10 [ 17.180529] ret_from_fork_asm+0x1a/0x30 [ 17.180571] </TASK> [ 17.180582] [ 17.187858] Allocated by task 302: [ 17.188038] kasan_save_stack+0x45/0x70 [ 17.188227] kasan_save_track+0x18/0x40 [ 17.188400] kasan_save_alloc_info+0x3b/0x50 [ 17.188620] __kasan_kmalloc+0xb7/0xc0 [ 17.188803] __kmalloc_noprof+0x1c9/0x500 [ 17.188971] kunit_kmalloc_array+0x25/0x60 [ 17.189182] copy_user_test_oob+0xab/0x10f0 [ 17.189358] kunit_try_run_case+0x1a5/0x480 [ 17.189630] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.189847] kthread+0x337/0x6f0 [ 17.189994] ret_from_fork+0x116/0x1d0 [ 17.190164] ret_from_fork_asm+0x1a/0x30 [ 17.190354] [ 17.190427] The buggy address belongs to the object at ffff8881025ccc00 [ 17.190427] which belongs to the cache kmalloc-128 of size 128 [ 17.190799] The buggy address is located 0 bytes inside of [ 17.190799] allocated 120-byte region [ffff8881025ccc00, ffff8881025ccc78) [ 17.191273] [ 17.191423] The buggy address belongs to the physical page: [ 17.191682] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1025cc [ 17.192030] flags: 0x200000000000000(node=0|zone=2) [ 17.192201] page_type: f5(slab) [ 17.192323] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 17.192945] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 17.193242] page dumped because: kasan: bad access detected [ 17.193507] [ 17.193587] Memory state around the buggy address: [ 17.193744] ffff8881025ccb00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.194061] ffff8881025ccb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.194375] >ffff8881025ccc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 17.194702] ^ [ 17.194961] ffff8881025ccc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.195246] ffff8881025ccd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.195543] ==================================================================