Date
Dec. 9, 2024, 6:35 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 32.014459] ================================================================== [ 32.015691] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x33/0xa0 [ 32.016492] Write of size 121 at addr ffff88810296dd00 by task kunit_try_catch/292 [ 32.017431] [ 32.017842] CPU: 0 UID: 0 PID: 292 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc2-next-20241209 #1 [ 32.019367] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.019885] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 32.020627] Call Trace: [ 32.020967] <TASK> [ 32.022105] dump_stack_lvl+0x73/0xb0 [ 32.022496] print_report+0xd1/0x640 [ 32.022927] ? __virt_addr_valid+0x1db/0x2d0 [ 32.023704] ? kasan_complete_mode_report_info+0x2a/0x200 [ 32.024535] kasan_report+0x102/0x140 [ 32.025110] ? _copy_from_user+0x33/0xa0 [ 32.025540] ? _copy_from_user+0x33/0xa0 [ 32.026076] kasan_check_range+0x10c/0x1c0 [ 32.026652] __kasan_check_write+0x18/0x20 [ 32.027226] _copy_from_user+0x33/0xa0 [ 32.027620] copy_user_test_oob+0x2bf/0x10f0 [ 32.028075] ? __pfx_copy_user_test_oob+0x10/0x10 [ 32.028513] ? finish_task_switch.isra.0+0x153/0x700 [ 32.029201] ? __switch_to+0x5d9/0xf60 [ 32.029709] ? __schedule+0xc70/0x27e0 [ 32.030247] ? __pfx_read_tsc+0x10/0x10 [ 32.030649] ? ktime_get_ts64+0x86/0x230 [ 32.031192] kunit_try_run_case+0x1b3/0x490 [ 32.031650] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.032249] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 32.032661] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 32.033413] ? __kthread_parkme+0x82/0x160 [ 32.033923] ? preempt_count_sub+0x50/0x80 [ 32.034557] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.034962] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 32.035608] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.036611] kthread+0x257/0x310 [ 32.037029] ? __pfx_kthread+0x10/0x10 [ 32.037801] ret_from_fork+0x41/0x80 [ 32.038611] ? __pfx_kthread+0x10/0x10 [ 32.039091] ret_from_fork_asm+0x1a/0x30 [ 32.039590] </TASK> [ 32.039834] [ 32.040065] Allocated by task 292: [ 32.041043] kasan_save_stack+0x3d/0x60 [ 32.041453] kasan_save_track+0x18/0x40 [ 32.042575] kasan_save_alloc_info+0x3b/0x50 [ 32.043136] __kasan_kmalloc+0xb7/0xc0 [ 32.043714] __kmalloc_noprof+0x1c4/0x500 [ 32.044315] kunit_kmalloc_array+0x25/0x60 [ 32.044946] copy_user_test_oob+0xac/0x10f0 [ 32.045552] kunit_try_run_case+0x1b3/0x490 [ 32.046420] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.046990] kthread+0x257/0x310 [ 32.047320] ret_from_fork+0x41/0x80 [ 32.048513] ret_from_fork_asm+0x1a/0x30 [ 32.049161] [ 32.049352] The buggy address belongs to the object at ffff88810296dd00 [ 32.049352] which belongs to the cache kmalloc-128 of size 128 [ 32.050876] The buggy address is located 0 bytes inside of [ 32.050876] allocated 120-byte region [ffff88810296dd00, ffff88810296dd78) [ 32.052284] [ 32.052767] The buggy address belongs to the physical page: [ 32.053395] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10296d [ 32.054647] flags: 0x200000000000000(node=0|zone=2) [ 32.055194] page_type: f5(slab) [ 32.055621] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 32.056858] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 32.057613] page dumped because: kasan: bad access detected [ 32.059113] [ 32.059305] Memory state around the buggy address: [ 32.059723] ffff88810296dc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.061074] ffff88810296dc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.062010] >ffff88810296dd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 32.062707] ^ [ 32.063680] ffff88810296dd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.064413] ffff88810296de00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.065384] ==================================================================