Date
Dec. 5, 2024, 2:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.230703] ================================================================== [ 33.232978] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 33.233899] Read of size 1 at addr fff00000c63d1e50 by task kunit_try_catch/248 [ 33.234744] [ 33.235102] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 33.236572] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.237164] Hardware name: linux,dummy-virt (DT) [ 33.237680] Call trace: [ 33.238181] show_stack+0x20/0x38 (C) [ 33.238896] dump_stack_lvl+0x8c/0xd0 [ 33.239477] print_report+0x118/0x5e0 [ 33.240122] kasan_report+0xc8/0x118 [ 33.240675] __asan_report_load1_noabort+0x20/0x30 [ 33.241339] strnlen+0x80/0x88 [ 33.241914] kasan_strings+0x364/0x8d8 [ 33.242552] kunit_try_run_case+0x14c/0x3d0 [ 33.243221] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.243973] kthread+0x24c/0x2d0 [ 33.244521] ret_from_fork+0x10/0x20 [ 33.245083] [ 33.245416] Allocated by task 248: [ 33.245951] kasan_save_stack+0x3c/0x68 [ 33.246587] kasan_save_track+0x20/0x40 [ 33.247170] kasan_save_alloc_info+0x40/0x58 [ 33.247796] __kasan_kmalloc+0xd4/0xd8 [ 33.248373] __kmalloc_cache_noprof+0x15c/0x3c0 [ 33.248904] kasan_strings+0xb0/0x8d8 [ 33.249531] kunit_try_run_case+0x14c/0x3d0 [ 33.250081] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.250924] kthread+0x24c/0x2d0 [ 33.251526] ret_from_fork+0x10/0x20 [ 33.252110] [ 33.252403] Freed by task 248: [ 33.252921] kasan_save_stack+0x3c/0x68 [ 33.253573] kasan_save_track+0x20/0x40 [ 33.254174] kasan_save_free_info+0x4c/0x78 [ 33.254796] __kasan_slab_free+0x6c/0x98 [ 33.255357] kfree+0x114/0x3c8 [ 33.255808] kasan_strings+0x124/0x8d8 [ 33.256489] kunit_try_run_case+0x14c/0x3d0 [ 33.257111] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.257673] kthread+0x24c/0x2d0 [ 33.258234] ret_from_fork+0x10/0x20 [ 33.258899] [ 33.259194] The buggy address belongs to the object at fff00000c63d1e40 [ 33.259194] which belongs to the cache kmalloc-32 of size 32 [ 33.260621] The buggy address is located 16 bytes inside of [ 33.260621] freed 32-byte region [fff00000c63d1e40, fff00000c63d1e60) [ 33.262041] [ 33.262391] The buggy address belongs to the physical page: [ 33.263077] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1063d1 [ 33.264021] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.264774] page_type: f5(slab) [ 33.265349] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.266221] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 33.267261] page dumped because: kasan: bad access detected [ 33.267971] [ 33.268277] Memory state around the buggy address: [ 33.268920] fff00000c63d1d00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.269843] fff00000c63d1d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.270692] >fff00000c63d1e00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.271588] ^ [ 33.272383] fff00000c63d1e80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.273303] fff00000c63d1f00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 33.274117] ==================================================================
[ 31.083991] ================================================================== [ 31.084744] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 31.086551] Read of size 1 at addr ffff888102a07ed0 by task kunit_try_catch/266 [ 31.088144] [ 31.088334] CPU: 1 UID: 0 PID: 266 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 31.089984] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.090587] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 31.092315] Call Trace: [ 31.092592] <TASK> [ 31.093027] dump_stack_lvl+0x73/0xb0 [ 31.093648] print_report+0xd1/0x640 [ 31.094356] ? __virt_addr_valid+0x1db/0x2d0 [ 31.095401] ? kasan_complete_mode_report_info+0x64/0x200 [ 31.095979] kasan_report+0x102/0x140 [ 31.096458] ? strnlen+0x73/0x80 [ 31.097474] ? strnlen+0x73/0x80 [ 31.098252] __asan_report_load1_noabort+0x18/0x20 [ 31.099063] strnlen+0x73/0x80 [ 31.099436] kasan_strings+0x4c3/0xb60 [ 31.100598] ? __pfx_kasan_strings+0x10/0x10 [ 31.101164] ? __schedule+0xc70/0x27e0 [ 31.101660] ? __pfx_read_tsc+0x10/0x10 [ 31.102471] ? ktime_get_ts64+0x86/0x230 [ 31.103182] kunit_try_run_case+0x1b3/0x490 [ 31.103590] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.104324] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 31.105170] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 31.105665] ? __kthread_parkme+0x82/0x160 [ 31.106872] ? preempt_count_sub+0x50/0x80 [ 31.107734] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.108153] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 31.109195] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.110147] kthread+0x257/0x310 [ 31.110881] ? __pfx_kthread+0x10/0x10 [ 31.111454] ret_from_fork+0x41/0x80 [ 31.112381] ? __pfx_kthread+0x10/0x10 [ 31.112774] ret_from_fork_asm+0x1a/0x30 [ 31.113410] </TASK> [ 31.114393] [ 31.114578] Allocated by task 266: [ 31.114866] kasan_save_stack+0x3d/0x60 [ 31.115907] kasan_save_track+0x18/0x40 [ 31.116632] kasan_save_alloc_info+0x3b/0x50 [ 31.117590] __kasan_kmalloc+0xb7/0xc0 [ 31.118013] __kmalloc_cache_noprof+0x184/0x410 [ 31.118639] kasan_strings+0xb9/0xb60 [ 31.119724] kunit_try_run_case+0x1b3/0x490 [ 31.120303] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.121035] kthread+0x257/0x310 [ 31.121486] ret_from_fork+0x41/0x80 [ 31.121806] ret_from_fork_asm+0x1a/0x30 [ 31.122389] [ 31.122612] Freed by task 266: [ 31.123124] kasan_save_stack+0x3d/0x60 [ 31.123878] kasan_save_track+0x18/0x40 [ 31.124296] kasan_save_free_info+0x3f/0x60 [ 31.124895] __kasan_slab_free+0x56/0x70 [ 31.125659] kfree+0x123/0x3f0 [ 31.126182] kasan_strings+0x13c/0xb60 [ 31.126860] kunit_try_run_case+0x1b3/0x490 [ 31.127518] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.128210] kthread+0x257/0x310 [ 31.128510] ret_from_fork+0x41/0x80 [ 31.128932] ret_from_fork_asm+0x1a/0x30 [ 31.129722] [ 31.130110] The buggy address belongs to the object at ffff888102a07ec0 [ 31.130110] which belongs to the cache kmalloc-32 of size 32 [ 31.131225] The buggy address is located 16 bytes inside of [ 31.131225] freed 32-byte region [ffff888102a07ec0, ffff888102a07ee0) [ 31.132467] [ 31.132635] The buggy address belongs to the physical page: [ 31.133394] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a07 [ 31.134374] flags: 0x200000000000000(node=0|zone=2) [ 31.135045] page_type: f5(slab) [ 31.135350] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 31.135950] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 31.136996] page dumped because: kasan: bad access detected [ 31.137390] [ 31.137548] Memory state around the buggy address: [ 31.138398] ffff888102a07d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 31.139606] ffff888102a07e00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 31.140198] >ffff888102a07e80: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.141054] ^ [ 31.141706] ffff888102a07f00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 31.142762] ffff888102a07f80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.143553] ==================================================================