Date
Dec. 5, 2024, 2:07 p.m.
| Environment | |
|---|---|
| qemu-x86_64 |
[ 35.143660] ================================================================== [ 35.145033] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x33/0xa0 [ 35.145758] Write of size 121 at addr ffff888101ac8600 by task kunit_try_catch/292 [ 35.146363] [ 35.146652] CPU: 0 UID: 0 PID: 292 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 35.147474] Tainted: [B]=BAD_PAGE, [N]=TEST [ 35.148051] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 35.149020] Call Trace: [ 35.149299] <TASK> [ 35.149954] dump_stack_lvl+0x73/0xb0 [ 35.150258] print_report+0xd1/0x640 [ 35.150661] ? __virt_addr_valid+0x1db/0x2d0 [ 35.151281] ? kasan_complete_mode_report_info+0x2a/0x200 [ 35.152260] kasan_report+0x102/0x140 [ 35.153210] ? _copy_from_user+0x33/0xa0 [ 35.153781] ? _copy_from_user+0x33/0xa0 [ 35.154213] kasan_check_range+0x10c/0x1c0 [ 35.154619] __kasan_check_write+0x18/0x20 [ 35.155822] _copy_from_user+0x33/0xa0 [ 35.156228] copy_user_test_oob+0x2bf/0x10f0 [ 35.156933] ? __pfx_copy_user_test_oob+0x10/0x10 [ 35.157601] ? finish_task_switch.isra.0+0x153/0x700 [ 35.158300] ? __switch_to+0x5d9/0xf60 [ 35.158935] ? irqentry_exit+0x2a/0x60 [ 35.159453] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 35.160476] ? trace_hardirqs_on+0x37/0xe0 [ 35.161096] ? __pfx_read_tsc+0x10/0x10 [ 35.161541] ? ktime_get_ts64+0x86/0x230 [ 35.162787] kunit_try_run_case+0x1b3/0x490 [ 35.163276] ? __pfx_kunit_try_run_case+0x10/0x10 [ 35.164253] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 35.164708] ? __kthread_parkme+0x82/0x160 [ 35.165568] ? preempt_count_sub+0x50/0x80 [ 35.166073] ? __pfx_kunit_try_run_case+0x10/0x10 [ 35.166630] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 35.167438] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 35.168229] kthread+0x257/0x310 [ 35.168492] ? __pfx_kthread+0x10/0x10 [ 35.169046] ret_from_fork+0x41/0x80 [ 35.169363] ? __pfx_kthread+0x10/0x10 [ 35.169875] ret_from_fork_asm+0x1a/0x30 [ 35.170244] </TASK> [ 35.170649] [ 35.171144] Allocated by task 292: [ 35.171413] kasan_save_stack+0x3d/0x60 [ 35.171624] kasan_save_track+0x18/0x40 [ 35.171945] kasan_save_alloc_info+0x3b/0x50 [ 35.172288] __kasan_kmalloc+0xb7/0xc0 [ 35.173369] __kmalloc_noprof+0x1c4/0x500 [ 35.174084] kunit_kmalloc_array+0x25/0x60 [ 35.174461] copy_user_test_oob+0xac/0x10f0 [ 35.174823] kunit_try_run_case+0x1b3/0x490 [ 35.175263] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 35.175830] kthread+0x257/0x310 [ 35.176450] ret_from_fork+0x41/0x80 [ 35.176783] ret_from_fork_asm+0x1a/0x30 [ 35.177328] [ 35.177556] The buggy address belongs to the object at ffff888101ac8600 [ 35.177556] which belongs to the cache kmalloc-128 of size 128 [ 35.179280] The buggy address is located 0 bytes inside of [ 35.179280] allocated 120-byte region [ffff888101ac8600, ffff888101ac8678) [ 35.180450] [ 35.180735] The buggy address belongs to the physical page: [ 35.181474] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ac8 [ 35.182914] flags: 0x200000000000000(node=0|zone=2) [ 35.183324] page_type: f5(slab) [ 35.183755] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 35.184445] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 35.185866] page dumped because: kasan: bad access detected [ 35.187073] [ 35.187425] Memory state around the buggy address: [ 35.188184] ffff888101ac8500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.189069] ffff888101ac8580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 35.190260] >ffff888101ac8600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 35.191139] ^ [ 35.191772] ffff888101ac8680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 35.192584] ffff888101ac8700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 35.193763] ==================================================================