Date
July 20, 2025, 8:11 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 17.047719] ================================================================== [ 17.048067] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 17.048361] Read of size 121 at addr ffff8881029dff00 by task kunit_try_catch/303 [ 17.048665] [ 17.048787] CPU: 1 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 17.048837] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.048850] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 17.048874] Call Trace: [ 17.048895] <TASK> [ 17.048914] dump_stack_lvl+0x73/0xb0 [ 17.048947] print_report+0xd1/0x610 [ 17.048974] ? __virt_addr_valid+0x1db/0x2d0 [ 17.048999] ? _copy_to_user+0x3c/0x70 [ 17.049020] ? kasan_complete_mode_report_info+0x2a/0x200 [ 17.049045] ? _copy_to_user+0x3c/0x70 [ 17.049065] kasan_report+0x141/0x180 [ 17.049089] ? _copy_to_user+0x3c/0x70 [ 17.049114] kasan_check_range+0x10c/0x1c0 [ 17.049139] __kasan_check_read+0x15/0x20 [ 17.049160] _copy_to_user+0x3c/0x70 [ 17.049181] copy_user_test_oob+0x364/0x10f0 [ 17.049209] ? __pfx_copy_user_test_oob+0x10/0x10 [ 17.049233] ? finish_task_switch.isra.0+0x153/0x700 [ 17.049258] ? __switch_to+0x47/0xf50 [ 17.049287] ? __schedule+0x10c6/0x2b60 [ 17.049312] ? __pfx_read_tsc+0x10/0x10 [ 17.049336] ? ktime_get_ts64+0x86/0x230 [ 17.049362] kunit_try_run_case+0x1a5/0x480 [ 17.049388] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.049412] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 17.049438] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 17.049464] ? __kthread_parkme+0x82/0x180 [ 17.049498] ? preempt_count_sub+0x50/0x80 [ 17.049523] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.049548] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.049574] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 17.049599] kthread+0x337/0x6f0 [ 17.049620] ? trace_preempt_on+0x20/0xc0 [ 17.049646] ? __pfx_kthread+0x10/0x10 [ 17.049668] ? _raw_spin_unlock_irq+0x47/0x80 [ 17.049692] ? calculate_sigpending+0x7b/0xa0 [ 17.049718] ? __pfx_kthread+0x10/0x10 [ 17.049741] ret_from_fork+0x116/0x1d0 [ 17.049762] ? __pfx_kthread+0x10/0x10 [ 17.049794] ret_from_fork_asm+0x1a/0x30 [ 17.049827] </TASK> [ 17.049838] [ 17.057268] Allocated by task 303: [ 17.057457] kasan_save_stack+0x45/0x70 [ 17.057681] kasan_save_track+0x18/0x40 [ 17.058021] kasan_save_alloc_info+0x3b/0x50 [ 17.058251] __kasan_kmalloc+0xb7/0xc0 [ 17.058453] __kmalloc_noprof+0x1c9/0x500 [ 17.058669] kunit_kmalloc_array+0x25/0x60 [ 17.058885] copy_user_test_oob+0xab/0x10f0 [ 17.059108] kunit_try_run_case+0x1a5/0x480 [ 17.059325] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.059533] kthread+0x337/0x6f0 [ 17.059662] ret_from_fork+0x116/0x1d0 [ 17.059803] ret_from_fork_asm+0x1a/0x30 [ 17.060061] [ 17.060164] The buggy address belongs to the object at ffff8881029dff00 [ 17.060164] which belongs to the cache kmalloc-128 of size 128 [ 17.060727] The buggy address is located 0 bytes inside of [ 17.060727] allocated 120-byte region [ffff8881029dff00, ffff8881029dff78) [ 17.061228] [ 17.061304] The buggy address belongs to the physical page: [ 17.061504] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029df [ 17.061870] flags: 0x200000000000000(node=0|zone=2) [ 17.062121] page_type: f5(slab) [ 17.062427] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 17.062684] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 17.063127] page dumped because: kasan: bad access detected [ 17.063388] [ 17.063493] Memory state around the buggy address: [ 17.063713] ffff8881029dfe00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.063940] ffff8881029dfe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.064168] >ffff8881029dff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 17.064390] ^ [ 17.064739] ffff8881029dff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.065066] ffff8881029e0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.065385] ==================================================================