Date
July 20, 2025, 11:12 p.m.
| Environment | |
|---|---|
| qemu-x86_64 |
[ 16.651412] ================================================================== [ 16.652275] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.652777] Write of size 121 at addr ffff88810315a200 by task kunit_try_catch/303 [ 16.653672] [ 16.653997] CPU: 0 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT(voluntary) [ 16.654065] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.654080] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.654105] Call Trace: [ 16.654121] <TASK> [ 16.654142] dump_stack_lvl+0x73/0xb0 [ 16.654177] print_report+0xd1/0x610 [ 16.654203] ? __virt_addr_valid+0x1db/0x2d0 [ 16.654230] ? _copy_from_user+0x32/0x90 [ 16.654251] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.654275] ? _copy_from_user+0x32/0x90 [ 16.654297] kasan_report+0x141/0x180 [ 16.654321] ? _copy_from_user+0x32/0x90 [ 16.654348] kasan_check_range+0x10c/0x1c0 [ 16.654373] __kasan_check_write+0x18/0x20 [ 16.654409] _copy_from_user+0x32/0x90 [ 16.654431] copy_user_test_oob+0x2be/0x10f0 [ 16.654460] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.654484] ? finish_task_switch.isra.0+0x153/0x700 [ 16.654511] ? __switch_to+0x47/0xf50 [ 16.654541] ? __schedule+0x10c6/0x2b60 [ 16.654565] ? __pfx_read_tsc+0x10/0x10 [ 16.654596] ? ktime_get_ts64+0x86/0x230 [ 16.654623] kunit_try_run_case+0x1a5/0x480 [ 16.654649] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.654673] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.654698] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.654722] ? __kthread_parkme+0x82/0x180 [ 16.654745] ? preempt_count_sub+0x50/0x80 [ 16.654771] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.654797] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.654822] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.654847] kthread+0x337/0x6f0 [ 16.654869] ? trace_preempt_on+0x20/0xc0 [ 16.654894] ? __pfx_kthread+0x10/0x10 [ 16.654916] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.654939] ? calculate_sigpending+0x7b/0xa0 [ 16.654965] ? __pfx_kthread+0x10/0x10 [ 16.654989] ret_from_fork+0x116/0x1d0 [ 16.655009] ? __pfx_kthread+0x10/0x10 [ 16.655032] ret_from_fork_asm+0x1a/0x30 [ 16.655066] </TASK> [ 16.655080] [ 16.666830] Allocated by task 303: [ 16.667380] kasan_save_stack+0x45/0x70 [ 16.667797] kasan_save_track+0x18/0x40 [ 16.668086] kasan_save_alloc_info+0x3b/0x50 [ 16.668390] __kasan_kmalloc+0xb7/0xc0 [ 16.668950] __kmalloc_noprof+0x1c9/0x500 [ 16.669326] kunit_kmalloc_array+0x25/0x60 [ 16.669542] copy_user_test_oob+0xab/0x10f0 [ 16.670036] kunit_try_run_case+0x1a5/0x480 [ 16.670469] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.670926] kthread+0x337/0x6f0 [ 16.671107] ret_from_fork+0x116/0x1d0 [ 16.671553] ret_from_fork_asm+0x1a/0x30 [ 16.671723] [ 16.672025] The buggy address belongs to the object at ffff88810315a200 [ 16.672025] which belongs to the cache kmalloc-128 of size 128 [ 16.672807] The buggy address is located 0 bytes inside of [ 16.672807] allocated 120-byte region [ffff88810315a200, ffff88810315a278) [ 16.673661] [ 16.673832] The buggy address belongs to the physical page: [ 16.674036] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10315a [ 16.674577] flags: 0x200000000000000(node=0|zone=2) [ 16.674916] page_type: f5(slab) [ 16.675098] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.675570] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.675978] page dumped because: kasan: bad access detected [ 16.676440] [ 16.676548] Memory state around the buggy address: [ 16.676901] ffff88810315a100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.677388] ffff88810315a180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.677938] >ffff88810315a200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.678474] ^ [ 16.678917] ffff88810315a280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.679371] ffff88810315a300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.679923] ==================================================================
[ 16.746717] ================================================================== [ 16.748540] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.748780] Write of size 121 at addr ffff8881027bcb00 by task kunit_try_catch/303 [ 16.749011] [ 16.749110] CPU: 1 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT(voluntary) [ 16.749173] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.749187] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.749212] Call Trace: [ 16.749227] <TASK> [ 16.749249] dump_stack_lvl+0x73/0xb0 [ 16.749283] print_report+0xd1/0x610 [ 16.749309] ? __virt_addr_valid+0x1db/0x2d0 [ 16.749335] ? _copy_from_user+0x32/0x90 [ 16.749355] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.749378] ? _copy_from_user+0x32/0x90 [ 16.749398] kasan_report+0x141/0x180 [ 16.749421] ? _copy_from_user+0x32/0x90 [ 16.749540] kasan_check_range+0x10c/0x1c0 [ 16.749696] __kasan_check_write+0x18/0x20 [ 16.749718] _copy_from_user+0x32/0x90 [ 16.749740] copy_user_test_oob+0x2be/0x10f0 [ 16.749768] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.749792] ? finish_task_switch.isra.0+0x153/0x700 [ 16.749816] ? __switch_to+0x47/0xf50 [ 16.749843] ? __schedule+0x10c6/0x2b60 [ 16.749866] ? __pfx_read_tsc+0x10/0x10 [ 16.749888] ? ktime_get_ts64+0x86/0x230 [ 16.749913] kunit_try_run_case+0x1a5/0x480 [ 16.749938] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.749961] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.749987] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.750011] ? __kthread_parkme+0x82/0x180 [ 16.750035] ? preempt_count_sub+0x50/0x80 [ 16.750060] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.750086] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.750110] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.750135] kthread+0x337/0x6f0 [ 16.750166] ? trace_preempt_on+0x20/0xc0 [ 16.750191] ? __pfx_kthread+0x10/0x10 [ 16.750212] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.750234] ? calculate_sigpending+0x7b/0xa0 [ 16.750260] ? __pfx_kthread+0x10/0x10 [ 16.750282] ret_from_fork+0x116/0x1d0 [ 16.750302] ? __pfx_kthread+0x10/0x10 [ 16.750364] ret_from_fork_asm+0x1a/0x30 [ 16.750397] </TASK> [ 16.750421] [ 16.760677] Allocated by task 303: [ 16.760870] kasan_save_stack+0x45/0x70 [ 16.761076] kasan_save_track+0x18/0x40 [ 16.761285] kasan_save_alloc_info+0x3b/0x50 [ 16.761466] __kasan_kmalloc+0xb7/0xc0 [ 16.761605] __kmalloc_noprof+0x1c9/0x500 [ 16.761811] kunit_kmalloc_array+0x25/0x60 [ 16.762032] copy_user_test_oob+0xab/0x10f0 [ 16.762293] kunit_try_run_case+0x1a5/0x480 [ 16.762449] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.762629] kthread+0x337/0x6f0 [ 16.762750] ret_from_fork+0x116/0x1d0 [ 16.762943] ret_from_fork_asm+0x1a/0x30 [ 16.763326] [ 16.763564] The buggy address belongs to the object at ffff8881027bcb00 [ 16.763564] which belongs to the cache kmalloc-128 of size 128 [ 16.764154] The buggy address is located 0 bytes inside of [ 16.764154] allocated 120-byte region [ffff8881027bcb00, ffff8881027bcb78) [ 16.764691] [ 16.764775] The buggy address belongs to the physical page: [ 16.765034] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1027bc [ 16.765824] flags: 0x200000000000000(node=0|zone=2) [ 16.766188] page_type: f5(slab) [ 16.766416] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.766756] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.767133] page dumped because: kasan: bad access detected [ 16.767377] [ 16.767478] Memory state around the buggy address: [ 16.767756] ffff8881027bca00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.768182] ffff8881027bca80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.768587] >ffff8881027bcb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.768941] ^ [ 16.769319] ffff8881027bcb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.769662] ffff8881027bcc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.770010] ==================================================================