Date
Dec. 3, 2024, 11:38 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.541316] ================================================================== [ 33.543724] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 33.544992] Read of size 1 at addr fff00000c5921b90 by task kunit_try_catch/248 [ 33.545867] [ 33.546507] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241203 #1 [ 33.547844] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.548563] Hardware name: linux,dummy-virt (DT) [ 33.549245] Call trace: [ 33.549866] show_stack+0x20/0x38 (C) [ 33.550573] dump_stack_lvl+0x8c/0xd0 [ 33.551791] print_report+0x118/0x5e0 [ 33.552571] kasan_report+0xc8/0x118 [ 33.553163] __asan_report_load1_noabort+0x20/0x30 [ 33.553897] strcmp+0xc0/0xc8 [ 33.554508] kasan_strings+0x228/0x8d8 [ 33.555186] kunit_try_run_case+0x14c/0x3d0 [ 33.556085] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.556933] kthread+0x24c/0x2d0 [ 33.557643] ret_from_fork+0x10/0x20 [ 33.558316] [ 33.558684] Allocated by task 248: [ 33.559962] kasan_save_stack+0x3c/0x68 [ 33.561161] kasan_save_track+0x20/0x40 [ 33.561708] kasan_save_alloc_info+0x40/0x58 [ 33.562269] __kasan_kmalloc+0xd4/0xd8 [ 33.562883] __kmalloc_cache_noprof+0x15c/0x3c0 [ 33.563906] kasan_strings+0xb0/0x8d8 [ 33.564747] kunit_try_run_case+0x14c/0x3d0 [ 33.565361] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.566061] kthread+0x24c/0x2d0 [ 33.566552] ret_from_fork+0x10/0x20 [ 33.567046] [ 33.567500] Freed by task 248: [ 33.568032] kasan_save_stack+0x3c/0x68 [ 33.568909] kasan_save_track+0x20/0x40 [ 33.569493] kasan_save_free_info+0x4c/0x78 [ 33.570170] __kasan_slab_free+0x6c/0x98 [ 33.570755] kfree+0x114/0x3c8 [ 33.571643] kasan_strings+0x124/0x8d8 [ 33.572160] kunit_try_run_case+0x14c/0x3d0 [ 33.572765] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.573584] kthread+0x24c/0x2d0 [ 33.574053] ret_from_fork+0x10/0x20 [ 33.574687] [ 33.575298] The buggy address belongs to the object at fff00000c5921b80 [ 33.575298] which belongs to the cache kmalloc-32 of size 32 [ 33.576699] The buggy address is located 16 bytes inside of [ 33.576699] freed 32-byte region [fff00000c5921b80, fff00000c5921ba0) [ 33.578201] [ 33.578525] The buggy address belongs to the physical page: [ 33.579974] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105921 [ 33.580972] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.582360] page_type: f5(slab) [ 33.582885] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.584278] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 33.585271] page dumped because: kasan: bad access detected [ 33.585946] [ 33.586286] Memory state around the buggy address: [ 33.586899] fff00000c5921a80: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 33.588027] fff00000c5921b00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.588928] >fff00000c5921b80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.589783] ^ [ 33.590311] fff00000c5921c00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.591852] fff00000c5921c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.592855] ==================================================================
[ 28.831303] ================================================================== [ 28.834323] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 28.834690] Read of size 1 at addr ffff888102a07b90 by task kunit_try_catch/268 [ 28.835763] [ 28.836189] CPU: 1 UID: 0 PID: 268 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241203 #1 [ 28.837287] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.837874] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.838256] Call Trace: [ 28.838426] <TASK> [ 28.839477] dump_stack_lvl+0x73/0xb0 [ 28.840177] print_report+0xd1/0x640 [ 28.840572] ? __virt_addr_valid+0x1db/0x2d0 [ 28.841033] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.841646] kasan_report+0x102/0x140 [ 28.842121] ? strcmp+0xb0/0xc0 [ 28.842312] ? strcmp+0xb0/0xc0 [ 28.842460] __asan_report_load1_noabort+0x18/0x20 [ 28.843036] strcmp+0xb0/0xc0 [ 28.843535] kasan_strings+0x2d3/0xb60 [ 28.844208] ? __pfx_kasan_strings+0x10/0x10 [ 28.844620] ? __schedule+0xc3e/0x2790 [ 28.845023] ? __pfx_read_tsc+0x10/0x10 [ 28.845268] ? ktime_get_ts64+0x86/0x230 [ 28.845541] kunit_try_run_case+0x1b3/0x490 [ 28.846091] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.846980] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.847303] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.848029] ? __kthread_parkme+0x82/0x160 [ 28.848732] ? preempt_count_sub+0x50/0x80 [ 28.849288] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.850361] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.851128] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.851676] kthread+0x257/0x310 [ 28.851922] ? __pfx_kthread+0x10/0x10 [ 28.852349] ret_from_fork+0x41/0x80 [ 28.852781] ? __pfx_kthread+0x10/0x10 [ 28.853268] ret_from_fork_asm+0x1a/0x30 [ 28.854009] </TASK> [ 28.854221] [ 28.854371] Allocated by task 268: [ 28.854835] kasan_save_stack+0x3d/0x60 [ 28.855815] kasan_save_track+0x18/0x40 [ 28.857097] kasan_save_alloc_info+0x3b/0x50 [ 28.857496] __kasan_kmalloc+0xb7/0xc0 [ 28.857827] __kmalloc_cache_noprof+0x184/0x410 [ 28.858294] kasan_strings+0xb9/0xb60 [ 28.858775] kunit_try_run_case+0x1b3/0x490 [ 28.859198] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.859768] kthread+0x257/0x310 [ 28.860120] ret_from_fork+0x41/0x80 [ 28.860662] ret_from_fork_asm+0x1a/0x30 [ 28.861773] [ 28.862074] Freed by task 268: [ 28.862490] kasan_save_stack+0x3d/0x60 [ 28.862996] kasan_save_track+0x18/0x40 [ 28.863278] kasan_save_free_info+0x3f/0x60 [ 28.863920] __kasan_slab_free+0x56/0x70 [ 28.864429] kfree+0x123/0x3f0 [ 28.864763] kasan_strings+0x13c/0xb60 [ 28.865371] kunit_try_run_case+0x1b3/0x490 [ 28.866027] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.866449] kthread+0x257/0x310 [ 28.866688] ret_from_fork+0x41/0x80 [ 28.867077] ret_from_fork_asm+0x1a/0x30 [ 28.868376] [ 28.868633] The buggy address belongs to the object at ffff888102a07b80 [ 28.868633] which belongs to the cache kmalloc-32 of size 32 [ 28.870106] The buggy address is located 16 bytes inside of [ 28.870106] freed 32-byte region [ffff888102a07b80, ffff888102a07ba0) [ 28.870683] [ 28.870838] The buggy address belongs to the physical page: [ 28.871583] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a07 [ 28.872571] flags: 0x200000000000000(node=0|zone=2) [ 28.873758] page_type: f5(slab) [ 28.874423] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.875196] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 28.875729] page dumped because: kasan: bad access detected [ 28.876509] [ 28.876887] Memory state around the buggy address: [ 28.877286] ffff888102a07a80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.878154] ffff888102a07b00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 28.878699] >ffff888102a07b80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 28.879834] ^ [ 28.880224] ffff888102a07c00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.880807] ffff888102a07c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 28.881739] ==================================================================