Date
Nov. 27, 2024, 3:37 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 50.953219] ================================================================== [ 50.955085] BUG: KASAN: slab-use-after-free in strrchr+0x6c/0x78 [ 50.955836] Read of size 1 at addr fff00000c616c150 by task kunit_try_catch/248 [ 50.956706] [ 50.957051] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 50.958262] Tainted: [B]=BAD_PAGE, [N]=TEST [ 50.959540] Hardware name: linux,dummy-virt (DT) [ 50.960187] Call trace: [ 50.960589] show_stack+0x20/0x38 (C) [ 50.961681] dump_stack_lvl+0x8c/0xd0 [ 50.962250] print_report+0x118/0x5e0 [ 50.962822] kasan_report+0xc8/0x118 [ 50.963650] __asan_report_load1_noabort+0x20/0x30 [ 50.964330] strrchr+0x6c/0x78 [ 50.964801] kasan_strings+0x1e0/0x8f8 [ 50.965603] kunit_try_run_case+0x14c/0x3d0 [ 50.966361] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 50.967110] kthread+0x24c/0x2d0 [ 50.967877] ret_from_fork+0x10/0x20 [ 50.968526] [ 50.968917] Allocated by task 248: [ 50.969507] kasan_save_stack+0x3c/0x68 [ 50.970148] kasan_save_track+0x20/0x40 [ 50.970892] kasan_save_alloc_info+0x40/0x58 [ 50.972091] __kasan_kmalloc+0xd4/0xd8 [ 50.972660] __kmalloc_cache_noprof+0x15c/0x3c0 [ 50.973251] kasan_strings+0xb4/0x8f8 [ 50.973760] kunit_try_run_case+0x14c/0x3d0 [ 50.974860] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 50.975532] kthread+0x24c/0x2d0 [ 50.976096] ret_from_fork+0x10/0x20 [ 50.976638] [ 50.976996] Freed by task 248: [ 50.977592] kasan_save_stack+0x3c/0x68 [ 50.978131] kasan_save_track+0x20/0x40 [ 50.978845] kasan_save_free_info+0x4c/0x78 [ 50.979862] __kasan_slab_free+0x6c/0x98 [ 50.980489] kfree+0x114/0x3c8 [ 50.981190] kasan_strings+0x128/0x8f8 [ 50.982213] kunit_try_run_case+0x14c/0x3d0 [ 50.983022] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 50.983748] kthread+0x24c/0x2d0 [ 50.984584] ret_from_fork+0x10/0x20 [ 50.985151] [ 50.985776] The buggy address belongs to the object at fff00000c616c140 [ 50.985776] which belongs to the cache kmalloc-32 of size 32 [ 50.987683] The buggy address is located 16 bytes inside of [ 50.987683] freed 32-byte region [fff00000c616c140, fff00000c616c160) [ 50.988988] [ 50.989669] The buggy address belongs to the physical page: [ 50.990321] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10616c [ 50.991596] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 50.992544] page_type: f5(slab) [ 50.993338] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 50.994866] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 50.995940] page dumped because: kasan: bad access detected [ 50.996856] [ 50.997222] Memory state around the buggy address: [ 50.998359] fff00000c616c000: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 50.999619] fff00000c616c080: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 51.000757] >fff00000c616c100: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 51.001798] ^ [ 51.002904] fff00000c616c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.003734] fff00000c616c200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.004517] ==================================================================
[ 28.353433] ================================================================== [ 28.354509] BUG: KASAN: slab-use-after-free in strrchr+0x64/0x70 [ 28.355597] Read of size 1 at addr ffff888101ab9950 by task kunit_try_catch/267 [ 28.356377] [ 28.356803] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 28.357902] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.358507] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.359250] Call Trace: [ 28.359612] <TASK> [ 28.359830] dump_stack_lvl+0x73/0xb0 [ 28.360469] print_report+0xd1/0x640 [ 28.360755] ? __virt_addr_valid+0x1db/0x2d0 [ 28.361137] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.363013] kasan_report+0x102/0x140 [ 28.363819] ? strrchr+0x64/0x70 [ 28.364469] ? strrchr+0x64/0x70 [ 28.364885] __asan_report_load1_noabort+0x18/0x20 [ 28.365601] strrchr+0x64/0x70 [ 28.366086] kasan_strings+0x24c/0xb60 [ 28.366450] ? __pfx_kasan_strings+0x10/0x10 [ 28.366958] ? __schedule+0xc3e/0x2790 [ 28.367494] ? __pfx_read_tsc+0x10/0x10 [ 28.368323] ? ktime_get_ts64+0x84/0x230 [ 28.368876] kunit_try_run_case+0x1b3/0x490 [ 28.369354] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.370286] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.371060] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.371556] ? __kthread_parkme+0x82/0x160 [ 28.372183] ? preempt_count_sub+0x50/0x80 [ 28.372727] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.373397] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.374074] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.374768] kthread+0x257/0x310 [ 28.375178] ? __pfx_kthread+0x10/0x10 [ 28.375904] ret_from_fork+0x41/0x80 [ 28.376465] ? __pfx_kthread+0x10/0x10 [ 28.376896] ret_from_fork_asm+0x1a/0x30 [ 28.377678] </TASK> [ 28.378031] [ 28.378317] Allocated by task 267: [ 28.378818] kasan_save_stack+0x3d/0x60 [ 28.379211] kasan_save_track+0x18/0x40 [ 28.379832] kasan_save_alloc_info+0x3b/0x50 [ 28.380509] __kasan_kmalloc+0xb7/0xc0 [ 28.380800] __kmalloc_cache_noprof+0x184/0x410 [ 28.381580] kasan_strings+0xb3/0xb60 [ 28.382167] kunit_try_run_case+0x1b3/0x490 [ 28.383141] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.383699] kthread+0x257/0x310 [ 28.384144] ret_from_fork+0x41/0x80 [ 28.384562] ret_from_fork_asm+0x1a/0x30 [ 28.385440] [ 28.385653] Freed by task 267: [ 28.386175] kasan_save_stack+0x3d/0x60 [ 28.386765] kasan_save_track+0x18/0x40 [ 28.387311] kasan_save_free_info+0x3f/0x60 [ 28.388224] __kasan_slab_free+0x56/0x70 [ 28.388559] kfree+0x123/0x3f0 [ 28.389113] kasan_strings+0x13a/0xb60 [ 28.389490] kunit_try_run_case+0x1b3/0x490 [ 28.389918] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.390810] kthread+0x257/0x310 [ 28.391246] ret_from_fork+0x41/0x80 [ 28.391778] ret_from_fork_asm+0x1a/0x30 [ 28.392360] [ 28.392754] The buggy address belongs to the object at ffff888101ab9940 [ 28.392754] which belongs to the cache kmalloc-32 of size 32 [ 28.393763] The buggy address is located 16 bytes inside of [ 28.393763] freed 32-byte region [ffff888101ab9940, ffff888101ab9960) [ 28.395074] [ 28.395580] The buggy address belongs to the physical page: [ 28.396111] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ab9 [ 28.397054] flags: 0x200000000000000(node=0|zone=2) [ 28.397653] page_type: f5(slab) [ 28.398199] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.398971] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 28.399798] page dumped because: kasan: bad access detected [ 28.400497] [ 28.400738] Memory state around the buggy address: [ 28.401528] ffff888101ab9800: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.402115] ffff888101ab9880: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 28.403365] >ffff888101ab9900: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 28.404162] ^ [ 28.404812] ffff888101ab9980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.405711] ffff888101ab9a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.406478] ==================================================================