Date
Nov. 27, 2024, 3:37 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 51.111184] ================================================================== [ 51.111831] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 51.112999] Read of size 1 at addr fff00000c616c150 by task kunit_try_catch/248 [ 51.114790] [ 51.115073] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 51.116652] Tainted: [B]=BAD_PAGE, [N]=TEST [ 51.117601] Hardware name: linux,dummy-virt (DT) [ 51.118801] Call trace: [ 51.119349] show_stack+0x20/0x38 (C) [ 51.119855] dump_stack_lvl+0x8c/0xd0 [ 51.120466] print_report+0x118/0x5e0 [ 51.121091] kasan_report+0xc8/0x118 [ 51.121986] __asan_report_load1_noabort+0x20/0x30 [ 51.122774] strlen+0xa8/0xb0 [ 51.123388] kasan_strings+0x320/0x8f8 [ 51.124072] kunit_try_run_case+0x14c/0x3d0 [ 51.124834] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 51.126006] kthread+0x24c/0x2d0 [ 51.126595] ret_from_fork+0x10/0x20 [ 51.127307] [ 51.127823] Allocated by task 248: [ 51.128417] kasan_save_stack+0x3c/0x68 [ 51.129084] kasan_save_track+0x20/0x40 [ 51.129625] kasan_save_alloc_info+0x40/0x58 [ 51.130331] __kasan_kmalloc+0xd4/0xd8 [ 51.130928] __kmalloc_cache_noprof+0x15c/0x3c0 [ 51.131975] kasan_strings+0xb4/0x8f8 [ 51.132469] kunit_try_run_case+0x14c/0x3d0 [ 51.133913] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 51.134649] kthread+0x24c/0x2d0 [ 51.135127] ret_from_fork+0x10/0x20 [ 51.135708] [ 51.136097] Freed by task 248: [ 51.136762] kasan_save_stack+0x3c/0x68 [ 51.138036] kasan_save_track+0x20/0x40 [ 51.139361] kasan_save_free_info+0x4c/0x78 [ 51.140319] __kasan_slab_free+0x6c/0x98 [ 51.140953] kfree+0x114/0x3c8 [ 51.141938] kasan_strings+0x128/0x8f8 [ 51.142744] kunit_try_run_case+0x14c/0x3d0 [ 51.143362] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 51.144076] kthread+0x24c/0x2d0 [ 51.144617] ret_from_fork+0x10/0x20 [ 51.145251] [ 51.145603] The buggy address belongs to the object at fff00000c616c140 [ 51.145603] which belongs to the cache kmalloc-32 of size 32 [ 51.147168] The buggy address is located 16 bytes inside of [ 51.147168] freed 32-byte region [fff00000c616c140, fff00000c616c160) [ 51.148571] [ 51.148864] The buggy address belongs to the physical page: [ 51.150283] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10616c [ 51.151255] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 51.152180] page_type: f5(slab) [ 51.152844] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 51.154164] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 51.155108] page dumped because: kasan: bad access detected [ 51.155817] [ 51.156168] Memory state around the buggy address: [ 51.156868] fff00000c616c000: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 51.158022] fff00000c616c080: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 51.159817] >fff00000c616c100: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 51.160490] ^ [ 51.161895] fff00000c616c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.163773] fff00000c616c200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.165209] ==================================================================
[ 28.520924] ================================================================== [ 28.521813] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 28.522486] Read of size 1 at addr ffff888101ab9950 by task kunit_try_catch/267 [ 28.522907] [ 28.523614] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 28.525354] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.525633] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.526395] Call Trace: [ 28.526689] <TASK> [ 28.526948] dump_stack_lvl+0x73/0xb0 [ 28.527502] print_report+0xd1/0x640 [ 28.527797] ? __virt_addr_valid+0x1db/0x2d0 [ 28.529320] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.530404] kasan_report+0x102/0x140 [ 28.531110] ? strlen+0x8f/0xb0 [ 28.531689] ? strlen+0x8f/0xb0 [ 28.532347] __asan_report_load1_noabort+0x18/0x20 [ 28.532808] strlen+0x8f/0xb0 [ 28.533655] kasan_strings+0x432/0xb60 [ 28.534375] ? __pfx_kasan_strings+0x10/0x10 [ 28.535094] ? __schedule+0xc3e/0x2790 [ 28.535790] ? __pfx_read_tsc+0x10/0x10 [ 28.536665] ? ktime_get_ts64+0x84/0x230 [ 28.537394] kunit_try_run_case+0x1b3/0x490 [ 28.537817] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.539101] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.539593] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.541031] ? __kthread_parkme+0x82/0x160 [ 28.541818] ? preempt_count_sub+0x50/0x80 [ 28.542525] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.543519] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.544501] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.545701] kthread+0x257/0x310 [ 28.546154] ? __pfx_kthread+0x10/0x10 [ 28.546364] ret_from_fork+0x41/0x80 [ 28.546546] ? __pfx_kthread+0x10/0x10 [ 28.546726] ret_from_fork_asm+0x1a/0x30 [ 28.547071] </TASK> [ 28.547421] [ 28.547581] Allocated by task 267: [ 28.547822] kasan_save_stack+0x3d/0x60 [ 28.548357] kasan_save_track+0x18/0x40 [ 28.548866] kasan_save_alloc_info+0x3b/0x50 [ 28.549437] __kasan_kmalloc+0xb7/0xc0 [ 28.549714] __kmalloc_cache_noprof+0x184/0x410 [ 28.550080] kasan_strings+0xb3/0xb60 [ 28.550368] kunit_try_run_case+0x1b3/0x490 [ 28.551162] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.551809] kthread+0x257/0x310 [ 28.552561] ret_from_fork+0x41/0x80 [ 28.553209] ret_from_fork_asm+0x1a/0x30 [ 28.553709] [ 28.554130] Freed by task 267: [ 28.554507] kasan_save_stack+0x3d/0x60 [ 28.554839] kasan_save_track+0x18/0x40 [ 28.555452] kasan_save_free_info+0x3f/0x60 [ 28.556113] __kasan_slab_free+0x56/0x70 [ 28.556543] kfree+0x123/0x3f0 [ 28.556801] kasan_strings+0x13a/0xb60 [ 28.557663] kunit_try_run_case+0x1b3/0x490 [ 28.558263] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.558820] kthread+0x257/0x310 [ 28.559378] ret_from_fork+0x41/0x80 [ 28.559796] ret_from_fork_asm+0x1a/0x30 [ 28.560290] [ 28.560527] The buggy address belongs to the object at ffff888101ab9940 [ 28.560527] which belongs to the cache kmalloc-32 of size 32 [ 28.561489] The buggy address is located 16 bytes inside of [ 28.561489] freed 32-byte region [ffff888101ab9940, ffff888101ab9960) [ 28.562957] [ 28.563339] The buggy address belongs to the physical page: [ 28.563715] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ab9 [ 28.564655] flags: 0x200000000000000(node=0|zone=2) [ 28.565186] page_type: f5(slab) [ 28.565618] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.566439] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 28.567351] page dumped because: kasan: bad access detected [ 28.567816] [ 28.568208] Memory state around the buggy address: [ 28.568722] ffff888101ab9800: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.569540] ffff888101ab9880: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 28.570332] >ffff888101ab9900: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 28.570946] ^ [ 28.571597] ffff888101ab9980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.572186] ffff888101ab9a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.572896] ==================================================================