Date
Nov. 22, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 37.485043] ================================================================== [ 37.486587] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 37.487474] Read of size 1 at addr fff00000c6a4c550 by task kunit_try_catch/248 [ 37.488382] [ 37.489100] CPU: 1 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 37.490914] Tainted: [B]=BAD_PAGE, [N]=TEST [ 37.491369] Hardware name: linux,dummy-virt (DT) [ 37.491741] Call trace: [ 37.491951] show_stack+0x20/0x38 (C) [ 37.492263] dump_stack_lvl+0x8c/0xd0 [ 37.492847] print_report+0x118/0x5e0 [ 37.493743] kasan_report+0xc8/0x118 [ 37.495284] __asan_report_load1_noabort+0x20/0x30 [ 37.496235] strnlen+0x80/0x88 [ 37.496825] kasan_strings+0x380/0x8f8 [ 37.497413] kunit_try_run_case+0x14c/0x3d0 [ 37.499363] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.501012] kthread+0x24c/0x2d0 [ 37.501649] ret_from_fork+0x10/0x20 [ 37.502281] [ 37.502643] Allocated by task 248: [ 37.503409] kasan_save_stack+0x3c/0x68 [ 37.504150] kasan_save_track+0x20/0x40 [ 37.505329] kasan_save_alloc_info+0x40/0x58 [ 37.506046] __kasan_kmalloc+0xd4/0xd8 [ 37.506980] __kmalloc_cache_noprof+0x15c/0x3c8 [ 37.508520] kasan_strings+0xb4/0x8f8 [ 37.509372] kunit_try_run_case+0x14c/0x3d0 [ 37.510397] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.511272] kthread+0x24c/0x2d0 [ 37.511872] ret_from_fork+0x10/0x20 [ 37.512790] [ 37.513689] Freed by task 248: [ 37.514076] kasan_save_stack+0x3c/0x68 [ 37.514561] kasan_save_track+0x20/0x40 [ 37.515208] kasan_save_free_info+0x4c/0x78 [ 37.515926] __kasan_slab_free+0x6c/0x98 [ 37.516976] kfree+0x114/0x3d0 [ 37.517863] kasan_strings+0x128/0x8f8 [ 37.518568] kunit_try_run_case+0x14c/0x3d0 [ 37.519213] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.520127] kthread+0x24c/0x2d0 [ 37.520731] ret_from_fork+0x10/0x20 [ 37.522115] [ 37.522391] The buggy address belongs to the object at fff00000c6a4c540 [ 37.522391] which belongs to the cache kmalloc-32 of size 32 [ 37.524331] The buggy address is located 16 bytes inside of [ 37.524331] freed 32-byte region [fff00000c6a4c540, fff00000c6a4c560) [ 37.525994] [ 37.527083] The buggy address belongs to the physical page: [ 37.528064] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106a4c [ 37.529381] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 37.530776] page_type: f5(slab) [ 37.531867] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 37.533371] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 37.534488] page dumped because: kasan: bad access detected [ 37.535139] [ 37.535475] Memory state around the buggy address: [ 37.536116] fff00000c6a4c400: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 37.538268] fff00000c6a4c480: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 37.539379] >fff00000c6a4c500: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 37.540278] ^ [ 37.541700] fff00000c6a4c580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.542621] fff00000c6a4c600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.543568] ==================================================================
[ 28.354536] ================================================================== [ 28.357540] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 28.358102] Read of size 1 at addr ffff888102a18a90 by task kunit_try_catch/267 [ 28.358648] [ 28.359515] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 28.360596] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.360968] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.362150] Call Trace: [ 28.362766] <TASK> [ 28.363412] dump_stack_lvl+0x73/0xb0 [ 28.363762] print_report+0xd1/0x640 [ 28.364766] ? __virt_addr_valid+0x1db/0x2d0 [ 28.365577] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.366281] kasan_report+0x102/0x140 [ 28.367689] ? strnlen+0x73/0x80 [ 28.368058] ? strnlen+0x73/0x80 [ 28.368974] __asan_report_load1_noabort+0x18/0x20 [ 28.369394] strnlen+0x73/0x80 [ 28.370120] kasan_strings+0x4cc/0xb60 [ 28.370541] ? __pfx_kasan_strings+0x10/0x10 [ 28.371173] ? __schedule+0xc3e/0x2790 [ 28.372044] ? __pfx_read_tsc+0x10/0x10 [ 28.372391] ? ktime_get_ts64+0x84/0x230 [ 28.373755] kunit_try_run_case+0x1b3/0x490 [ 28.374279] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.374720] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.375149] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.375800] ? __kthread_parkme+0x82/0x160 [ 28.376656] ? preempt_count_sub+0x50/0x80 [ 28.377015] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.377323] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.378278] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.379363] kthread+0x257/0x310 [ 28.379764] ? __pfx_kthread+0x10/0x10 [ 28.380220] ret_from_fork+0x41/0x80 [ 28.380627] ? __pfx_kthread+0x10/0x10 [ 28.381447] ret_from_fork_asm+0x1a/0x30 [ 28.382186] </TASK> [ 28.382465] [ 28.383015] Allocated by task 267: [ 28.384147] kasan_save_stack+0x3d/0x60 [ 28.384539] kasan_save_track+0x18/0x40 [ 28.384968] kasan_save_alloc_info+0x3b/0x50 [ 28.385377] __kasan_kmalloc+0xb7/0xc0 [ 28.385713] __kmalloc_cache_noprof+0x184/0x410 [ 28.386503] kasan_strings+0xb3/0xb60 [ 28.386936] kunit_try_run_case+0x1b3/0x490 [ 28.387224] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.387534] kthread+0x257/0x310 [ 28.387933] ret_from_fork+0x41/0x80 [ 28.388416] ret_from_fork_asm+0x1a/0x30 [ 28.390147] [ 28.390578] Freed by task 267: [ 28.391067] kasan_save_stack+0x3d/0x60 [ 28.391704] kasan_save_track+0x18/0x40 [ 28.392331] kasan_save_free_info+0x3f/0x60 [ 28.392894] __kasan_slab_free+0x56/0x70 [ 28.393277] kfree+0x123/0x3f0 [ 28.394346] kasan_strings+0x13a/0xb60 [ 28.395094] kunit_try_run_case+0x1b3/0x490 [ 28.395487] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.396282] kthread+0x257/0x310 [ 28.396616] ret_from_fork+0x41/0x80 [ 28.397056] ret_from_fork_asm+0x1a/0x30 [ 28.397870] [ 28.398093] The buggy address belongs to the object at ffff888102a18a80 [ 28.398093] which belongs to the cache kmalloc-32 of size 32 [ 28.399512] The buggy address is located 16 bytes inside of [ 28.399512] freed 32-byte region [ffff888102a18a80, ffff888102a18aa0) [ 28.400412] [ 28.400788] The buggy address belongs to the physical page: [ 28.402253] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a18 [ 28.402933] flags: 0x200000000000000(node=0|zone=2) [ 28.403619] page_type: f5(slab) [ 28.404161] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.404864] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 28.406069] page dumped because: kasan: bad access detected [ 28.406681] [ 28.406845] Memory state around the buggy address: [ 28.407529] ffff888102a18980: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.408006] ffff888102a18a00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 28.409024] >ffff888102a18a80: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 28.409722] ^ [ 28.410479] ffff888102a18b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.411164] ffff888102a18b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.411956] ==================================================================