Date
Nov. 20, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 39.684719] ================================================================== [ 39.686405] BUG: KASAN: slab-use-after-free in strchr+0xcc/0xd8 [ 39.687249] Read of size 1 at addr fff00000c65a90d0 by task kunit_try_catch/248 [ 39.688288] [ 39.688716] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241120 #1 [ 39.690045] Tainted: [B]=BAD_PAGE, [N]=TEST [ 39.690552] Hardware name: linux,dummy-virt (DT) [ 39.691173] Call trace: [ 39.691543] show_stack+0x20/0x38 (C) [ 39.692161] dump_stack_lvl+0x8c/0xd0 [ 39.692740] print_report+0x118/0x5e0 [ 39.693264] kasan_report+0xc8/0x118 [ 39.693796] __asan_report_load1_noabort+0x20/0x30 [ 39.694500] strchr+0xcc/0xd8 [ 39.695038] kasan_strings+0x180/0x8f8 [ 39.695954] kunit_try_run_case+0x14c/0x3d0 [ 39.696581] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.697202] kthread+0x24c/0x2d0 [ 39.698023] ret_from_fork+0x10/0x20 [ 39.698605] [ 39.698961] Allocated by task 248: [ 39.699456] kasan_save_stack+0x3c/0x68 [ 39.700048] kasan_save_track+0x20/0x40 [ 39.700565] kasan_save_alloc_info+0x40/0x58 [ 39.701186] __kasan_kmalloc+0xd4/0xd8 [ 39.702000] __kmalloc_cache_noprof+0x15c/0x3c8 [ 39.702664] kasan_strings+0xb4/0x8f8 [ 39.703178] kunit_try_run_case+0x14c/0x3d0 [ 39.703788] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.704401] kthread+0x24c/0x2d0 [ 39.704987] ret_from_fork+0x10/0x20 [ 39.705998] [ 39.706311] Freed by task 248: [ 39.706760] kasan_save_stack+0x3c/0x68 [ 39.707295] kasan_save_track+0x20/0x40 [ 39.707899] kasan_save_free_info+0x4c/0x78 [ 39.708547] __kasan_slab_free+0x6c/0x98 [ 39.709075] kfree+0x114/0x3d0 [ 39.710038] kasan_strings+0x128/0x8f8 [ 39.710655] kunit_try_run_case+0x14c/0x3d0 [ 39.711224] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.711803] kthread+0x24c/0x2d0 [ 39.712282] ret_from_fork+0x10/0x20 [ 39.712835] [ 39.713134] The buggy address belongs to the object at fff00000c65a90c0 [ 39.713134] which belongs to the cache kmalloc-32 of size 32 [ 39.714307] The buggy address is located 16 bytes inside of [ 39.714307] freed 32-byte region [fff00000c65a90c0, fff00000c65a90e0) [ 39.715993] [ 39.716317] The buggy address belongs to the physical page: [ 39.717022] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1065a9 [ 39.718488] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 39.719194] page_type: f5(slab) [ 39.719741] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 39.720641] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 39.721387] page dumped because: kasan: bad access detected [ 39.722276] [ 39.722633] Memory state around the buggy address: [ 39.723210] fff00000c65a8f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 39.724045] fff00000c65a9000: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 39.724961] >fff00000c65a9080: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 39.726373] ^ [ 39.727299] fff00000c65a9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 39.728320] fff00000c65a9180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 39.729019] ==================================================================
[ 31.295328] ================================================================== [ 31.296966] BUG: KASAN: slab-use-after-free in strchr+0x9c/0xc0 [ 31.298021] Read of size 1 at addr ffff8881029f3d50 by task kunit_try_catch/266 [ 31.298553] [ 31.299274] CPU: 1 UID: 0 PID: 266 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241120 #1 [ 31.300783] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.301062] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 31.302749] Call Trace: [ 31.303567] <TASK> [ 31.304051] dump_stack_lvl+0x73/0xb0 [ 31.304737] print_report+0xd1/0x640 [ 31.305326] ? __virt_addr_valid+0x1db/0x2d0 [ 31.305540] ? kasan_complete_mode_report_info+0x64/0x200 [ 31.306737] kasan_report+0x102/0x140 [ 31.307390] ? strchr+0x9c/0xc0 [ 31.308059] ? strchr+0x9c/0xc0 [ 31.308443] __asan_report_load1_noabort+0x18/0x20 [ 31.310123] strchr+0x9c/0xc0 [ 31.310507] kasan_strings+0x1b1/0xb60 [ 31.310980] ? __pfx_kasan_strings+0x10/0x10 [ 31.311798] ? __schedule+0xc3e/0x2790 [ 31.312210] ? __pfx_read_tsc+0x10/0x10 [ 31.313431] ? ktime_get_ts64+0x84/0x230 [ 31.313833] kunit_try_run_case+0x1b3/0x490 [ 31.314934] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.315622] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 31.316404] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 31.317159] ? __kthread_parkme+0x82/0x160 [ 31.317870] ? preempt_count_sub+0x50/0x80 [ 31.318353] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.319370] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 31.320003] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.320575] kthread+0x257/0x310 [ 31.321121] ? __pfx_kthread+0x10/0x10 [ 31.321903] ret_from_fork+0x41/0x80 [ 31.322336] ? __pfx_kthread+0x10/0x10 [ 31.322891] ret_from_fork_asm+0x1a/0x30 [ 31.323410] </TASK> [ 31.323862] [ 31.324055] Allocated by task 266: [ 31.324809] kasan_save_stack+0x3d/0x60 [ 31.325187] kasan_save_track+0x18/0x40 [ 31.325544] kasan_save_alloc_info+0x3b/0x50 [ 31.326396] __kasan_kmalloc+0xb7/0xc0 [ 31.326908] __kmalloc_cache_noprof+0x184/0x410 [ 31.327584] kasan_strings+0xb3/0xb60 [ 31.327921] kunit_try_run_case+0x1b3/0x490 [ 31.328223] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.328977] kthread+0x257/0x310 [ 31.329553] ret_from_fork+0x41/0x80 [ 31.330294] ret_from_fork_asm+0x1a/0x30 [ 31.330877] [ 31.331106] Freed by task 266: [ 31.331638] kasan_save_stack+0x3d/0x60 [ 31.332183] kasan_save_track+0x18/0x40 [ 31.332716] kasan_save_free_info+0x3f/0x60 [ 31.333022] __kasan_slab_free+0x56/0x70 [ 31.333847] kfree+0x123/0x3f0 [ 31.334287] kasan_strings+0x13a/0xb60 [ 31.335073] kunit_try_run_case+0x1b3/0x490 [ 31.335610] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.336038] kthread+0x257/0x310 [ 31.336291] ret_from_fork+0x41/0x80 [ 31.336562] ret_from_fork_asm+0x1a/0x30 [ 31.337236] [ 31.337491] The buggy address belongs to the object at ffff8881029f3d40 [ 31.337491] which belongs to the cache kmalloc-32 of size 32 [ 31.338767] The buggy address is located 16 bytes inside of [ 31.338767] freed 32-byte region [ffff8881029f3d40, ffff8881029f3d60) [ 31.340396] [ 31.340834] The buggy address belongs to the physical page: [ 31.341203] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029f3 [ 31.342548] flags: 0x200000000000000(node=0|zone=2) [ 31.343187] page_type: f5(slab) [ 31.343807] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 31.344908] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 31.345389] page dumped because: kasan: bad access detected [ 31.346195] [ 31.346459] Memory state around the buggy address: [ 31.347322] ffff8881029f3c00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 31.347916] ffff8881029f3c80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 31.349142] >ffff8881029f3d00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.349958] ^ [ 31.351128] ffff8881029f3d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.351588] ffff8881029f3e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.352586] ==================================================================