Date
Nov. 27, 2024, 3:37 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 32.735112] ================================================================== [ 32.736461] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x33/0xa0 [ 32.737199] Write of size 121 at addr ffff888102a58900 by task kunit_try_catch/293 [ 32.737829] [ 32.738190] CPU: 0 UID: 0 PID: 293 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 32.739243] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.739683] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 32.740594] Call Trace: [ 32.741072] <TASK> [ 32.741437] dump_stack_lvl+0x73/0xb0 [ 32.741834] print_report+0xd1/0x640 [ 32.742385] ? __virt_addr_valid+0x1db/0x2d0 [ 32.742762] ? kasan_complete_mode_report_info+0x2a/0x200 [ 32.743353] kasan_report+0x102/0x140 [ 32.743658] ? _copy_from_user+0x33/0xa0 [ 32.744106] ? _copy_from_user+0x33/0xa0 [ 32.744622] kasan_check_range+0x10c/0x1c0 [ 32.745194] __kasan_check_write+0x18/0x20 [ 32.745496] _copy_from_user+0x33/0xa0 [ 32.745940] copy_user_test_oob+0x2bf/0x10f0 [ 32.746535] ? __pfx_copy_user_test_oob+0x10/0x10 [ 32.746966] ? finish_task_switch.isra.0+0x153/0x700 [ 32.747598] ? __switch_to+0x5d9/0xf60 [ 32.747931] ? __schedule+0xc3e/0x2790 [ 32.748465] ? __pfx_read_tsc+0x10/0x10 [ 32.748839] ? ktime_get_ts64+0x84/0x230 [ 32.749336] kunit_try_run_case+0x1b3/0x490 [ 32.749836] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.750408] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 32.750934] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 32.751529] ? __kthread_parkme+0x82/0x160 [ 32.751855] ? preempt_count_sub+0x50/0x80 [ 32.752394] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.752803] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 32.753522] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.753976] kthread+0x257/0x310 [ 32.754422] ? __pfx_kthread+0x10/0x10 [ 32.754764] ret_from_fork+0x41/0x80 [ 32.755279] ? __pfx_kthread+0x10/0x10 [ 32.755690] ret_from_fork_asm+0x1a/0x30 [ 32.756181] </TASK> [ 32.756513] [ 32.756761] Allocated by task 293: [ 32.757260] kasan_save_stack+0x3d/0x60 [ 32.757548] kasan_save_track+0x18/0x40 [ 32.758140] kasan_save_alloc_info+0x3b/0x50 [ 32.758506] __kasan_kmalloc+0xb7/0xc0 [ 32.758937] __kmalloc_noprof+0x1c4/0x500 [ 32.759496] kunit_kmalloc_array+0x25/0x60 [ 32.759895] copy_user_test_oob+0xac/0x10f0 [ 32.760368] kunit_try_run_case+0x1b3/0x490 [ 32.760872] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.761414] kthread+0x257/0x310 [ 32.761724] ret_from_fork+0x41/0x80 [ 32.762063] ret_from_fork_asm+0x1a/0x30 [ 32.762576] [ 32.762833] The buggy address belongs to the object at ffff888102a58900 [ 32.762833] which belongs to the cache kmalloc-128 of size 128 [ 32.763931] The buggy address is located 0 bytes inside of [ 32.763931] allocated 120-byte region [ffff888102a58900, ffff888102a58978) [ 32.766090] [ 32.766324] The buggy address belongs to the physical page: [ 32.766749] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a58 [ 32.767451] flags: 0x200000000000000(node=0|zone=2) [ 32.767910] page_type: f5(slab) [ 32.768375] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 32.769137] raw: 0000000000000000 0000000080100010 00000001f5000000 0000000000000000 [ 32.769795] page dumped because: kasan: bad access detected [ 32.770465] [ 32.770698] Memory state around the buggy address: [ 32.771213] ffff888102a58800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.771825] ffff888102a58880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.772555] >ffff888102a58900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 32.773112] ^ [ 32.773854] ffff888102a58980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.774470] ffff888102a58a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.775233] ==================================================================