Date
Nov. 27, 2024, 3:37 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 51.167889] ================================================================== [ 51.170211] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 51.170728] Read of size 1 at addr fff00000c616c150 by task kunit_try_catch/248 [ 51.171268] [ 51.173981] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 51.175936] Tainted: [B]=BAD_PAGE, [N]=TEST [ 51.176723] Hardware name: linux,dummy-virt (DT) [ 51.177401] Call trace: [ 51.178037] show_stack+0x20/0x38 (C) [ 51.179338] dump_stack_lvl+0x8c/0xd0 [ 51.179922] print_report+0x118/0x5e0 [ 51.180523] kasan_report+0xc8/0x118 [ 51.181130] __asan_report_load1_noabort+0x20/0x30 [ 51.181826] strnlen+0x80/0x88 [ 51.182445] kasan_strings+0x380/0x8f8 [ 51.182993] kunit_try_run_case+0x14c/0x3d0 [ 51.184085] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 51.184755] kthread+0x24c/0x2d0 [ 51.185649] ret_from_fork+0x10/0x20 [ 51.186211] [ 51.186594] Allocated by task 248: [ 51.187097] kasan_save_stack+0x3c/0x68 [ 51.187664] kasan_save_track+0x20/0x40 [ 51.188382] kasan_save_alloc_info+0x40/0x58 [ 51.189133] __kasan_kmalloc+0xd4/0xd8 [ 51.190133] __kmalloc_cache_noprof+0x15c/0x3c0 [ 51.190923] kasan_strings+0xb4/0x8f8 [ 51.191854] kunit_try_run_case+0x14c/0x3d0 [ 51.192387] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 51.193352] kthread+0x24c/0x2d0 [ 51.193942] ret_from_fork+0x10/0x20 [ 51.194639] [ 51.195161] Freed by task 248: [ 51.195658] kasan_save_stack+0x3c/0x68 [ 51.196391] kasan_save_track+0x20/0x40 [ 51.197271] kasan_save_free_info+0x4c/0x78 [ 51.198525] __kasan_slab_free+0x6c/0x98 [ 51.199468] kfree+0x114/0x3c8 [ 51.199992] kasan_strings+0x128/0x8f8 [ 51.200499] kunit_try_run_case+0x14c/0x3d0 [ 51.200807] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 51.201558] kthread+0x24c/0x2d0 [ 51.202633] ret_from_fork+0x10/0x20 [ 51.203603] [ 51.203930] The buggy address belongs to the object at fff00000c616c140 [ 51.203930] which belongs to the cache kmalloc-32 of size 32 [ 51.205819] The buggy address is located 16 bytes inside of [ 51.205819] freed 32-byte region [fff00000c616c140, fff00000c616c160) [ 51.208163] [ 51.208636] The buggy address belongs to the physical page: [ 51.209391] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10616c [ 51.210700] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 51.211464] page_type: f5(slab) [ 51.212284] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 51.213440] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 51.214264] page dumped because: kasan: bad access detected [ 51.215007] [ 51.215414] Memory state around the buggy address: [ 51.216095] fff00000c616c000: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 51.216842] fff00000c616c080: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 51.218183] >fff00000c616c100: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 51.219012] ^ [ 51.219766] fff00000c616c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.220672] fff00000c616c200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.222108] ==================================================================
[ 28.574431] ================================================================== [ 28.575651] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 28.576769] Read of size 1 at addr ffff888101ab9950 by task kunit_try_catch/267 [ 28.577401] [ 28.577670] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 28.578776] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.580050] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.580808] Call Trace: [ 28.581473] <TASK> [ 28.581659] dump_stack_lvl+0x73/0xb0 [ 28.582408] print_report+0xd1/0x640 [ 28.583049] ? __virt_addr_valid+0x1db/0x2d0 [ 28.583687] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.584461] kasan_report+0x102/0x140 [ 28.584880] ? strnlen+0x73/0x80 [ 28.585574] ? strnlen+0x73/0x80 [ 28.586373] __asan_report_load1_noabort+0x18/0x20 [ 28.587236] strnlen+0x73/0x80 [ 28.587638] kasan_strings+0x4cc/0xb60 [ 28.588275] ? __pfx_kasan_strings+0x10/0x10 [ 28.588742] ? __schedule+0xc3e/0x2790 [ 28.589341] ? __pfx_read_tsc+0x10/0x10 [ 28.589839] ? ktime_get_ts64+0x84/0x230 [ 28.590445] kunit_try_run_case+0x1b3/0x490 [ 28.591268] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.591806] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.592552] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.593504] ? __kthread_parkme+0x82/0x160 [ 28.594035] ? preempt_count_sub+0x50/0x80 [ 28.594771] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.595610] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.596386] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.597053] kthread+0x257/0x310 [ 28.597641] ? __pfx_kthread+0x10/0x10 [ 28.598811] ret_from_fork+0x41/0x80 [ 28.599267] ? __pfx_kthread+0x10/0x10 [ 28.599766] ret_from_fork_asm+0x1a/0x30 [ 28.600315] </TASK> [ 28.600674] [ 28.601061] Allocated by task 267: [ 28.601347] kasan_save_stack+0x3d/0x60 [ 28.601868] kasan_save_track+0x18/0x40 [ 28.602828] kasan_save_alloc_info+0x3b/0x50 [ 28.603433] __kasan_kmalloc+0xb7/0xc0 [ 28.604223] __kmalloc_cache_noprof+0x184/0x410 [ 28.605195] kasan_strings+0xb3/0xb60 [ 28.605628] kunit_try_run_case+0x1b3/0x490 [ 28.606481] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.607520] kthread+0x257/0x310 [ 28.607900] ret_from_fork+0x41/0x80 [ 28.608674] ret_from_fork_asm+0x1a/0x30 [ 28.609167] [ 28.609433] Freed by task 267: [ 28.610259] kasan_save_stack+0x3d/0x60 [ 28.610790] kasan_save_track+0x18/0x40 [ 28.611464] kasan_save_free_info+0x3f/0x60 [ 28.612446] __kasan_slab_free+0x56/0x70 [ 28.613399] kfree+0x123/0x3f0 [ 28.613873] kasan_strings+0x13a/0xb60 [ 28.614212] kunit_try_run_case+0x1b3/0x490 [ 28.615262] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.616325] kthread+0x257/0x310 [ 28.616691] ret_from_fork+0x41/0x80 [ 28.617258] ret_from_fork_asm+0x1a/0x30 [ 28.617557] [ 28.617923] The buggy address belongs to the object at ffff888101ab9940 [ 28.617923] which belongs to the cache kmalloc-32 of size 32 [ 28.619366] The buggy address is located 16 bytes inside of [ 28.619366] freed 32-byte region [ffff888101ab9940, ffff888101ab9960) [ 28.621298] [ 28.621491] The buggy address belongs to the physical page: [ 28.622079] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ab9 [ 28.623047] flags: 0x200000000000000(node=0|zone=2) [ 28.623692] page_type: f5(slab) [ 28.624184] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.624905] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 28.625694] page dumped because: kasan: bad access detected [ 28.626459] [ 28.626659] Memory state around the buggy address: [ 28.627152] ffff888101ab9800: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.627567] ffff888101ab9880: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 28.629015] >ffff888101ab9900: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 28.629604] ^ [ 28.629962] ffff888101ab9980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.631265] ffff888101ab9a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.631924] ==================================================================