Date
Nov. 27, 2024, 3:37 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 50.900709] ================================================================== [ 50.902844] BUG: KASAN: slab-use-after-free in strchr+0xcc/0xd8 [ 50.903649] Read of size 1 at addr fff00000c616c150 by task kunit_try_catch/248 [ 50.904463] [ 50.904924] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 50.906820] Tainted: [B]=BAD_PAGE, [N]=TEST [ 50.907593] Hardware name: linux,dummy-virt (DT) [ 50.908392] Call trace: [ 50.908938] show_stack+0x20/0x38 (C) [ 50.909515] dump_stack_lvl+0x8c/0xd0 [ 50.910852] print_report+0x118/0x5e0 [ 50.911982] kasan_report+0xc8/0x118 [ 50.912755] __asan_report_load1_noabort+0x20/0x30 [ 50.913552] strchr+0xcc/0xd8 [ 50.914524] kasan_strings+0x180/0x8f8 [ 50.915059] kunit_try_run_case+0x14c/0x3d0 [ 50.915723] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 50.916502] kthread+0x24c/0x2d0 [ 50.917312] ret_from_fork+0x10/0x20 [ 50.918207] [ 50.918522] Allocated by task 248: [ 50.919063] kasan_save_stack+0x3c/0x68 [ 50.919694] kasan_save_track+0x20/0x40 [ 50.920517] kasan_save_alloc_info+0x40/0x58 [ 50.921245] __kasan_kmalloc+0xd4/0xd8 [ 50.921980] __kmalloc_cache_noprof+0x15c/0x3c0 [ 50.922638] kasan_strings+0xb4/0x8f8 [ 50.923284] kunit_try_run_case+0x14c/0x3d0 [ 50.923865] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 50.924666] kthread+0x24c/0x2d0 [ 50.925361] ret_from_fork+0x10/0x20 [ 50.925791] [ 50.926149] Freed by task 248: [ 50.926760] kasan_save_stack+0x3c/0x68 [ 50.928016] kasan_save_track+0x20/0x40 [ 50.928614] kasan_save_free_info+0x4c/0x78 [ 50.929184] __kasan_slab_free+0x6c/0x98 [ 50.929826] kfree+0x114/0x3c8 [ 50.930711] kasan_strings+0x128/0x8f8 [ 50.931258] kunit_try_run_case+0x14c/0x3d0 [ 50.931877] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 50.932506] kthread+0x24c/0x2d0 [ 50.933559] ret_from_fork+0x10/0x20 [ 50.934004] [ 50.934377] The buggy address belongs to the object at fff00000c616c140 [ 50.934377] which belongs to the cache kmalloc-32 of size 32 [ 50.935859] The buggy address is located 16 bytes inside of [ 50.935859] freed 32-byte region [fff00000c616c140, fff00000c616c160) [ 50.938036] [ 50.938282] The buggy address belongs to the physical page: [ 50.939030] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10616c [ 50.939915] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 50.940827] page_type: f5(slab) [ 50.942065] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 50.943014] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 50.943932] page dumped because: kasan: bad access detected [ 50.944617] [ 50.944904] Memory state around the buggy address: [ 50.945570] fff00000c616c000: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 50.946384] fff00000c616c080: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 50.947261] >fff00000c616c100: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 50.948533] ^ [ 50.949617] fff00000c616c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 50.950502] fff00000c616c200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 50.951835] ==================================================================
[ 28.293898] ================================================================== [ 28.295111] BUG: KASAN: slab-use-after-free in strchr+0x9c/0xc0 [ 28.296123] Read of size 1 at addr ffff888101ab9950 by task kunit_try_catch/267 [ 28.296727] [ 28.297708] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 28.298692] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.299457] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.300553] Call Trace: [ 28.301312] <TASK> [ 28.301625] dump_stack_lvl+0x73/0xb0 [ 28.302535] print_report+0xd1/0x640 [ 28.303191] ? __virt_addr_valid+0x1db/0x2d0 [ 28.304261] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.305001] kasan_report+0x102/0x140 [ 28.305623] ? strchr+0x9c/0xc0 [ 28.306417] ? strchr+0x9c/0xc0 [ 28.306938] __asan_report_load1_noabort+0x18/0x20 [ 28.307720] strchr+0x9c/0xc0 [ 28.308114] kasan_strings+0x1b1/0xb60 [ 28.308515] ? __pfx_kasan_strings+0x10/0x10 [ 28.308958] ? __schedule+0xc3e/0x2790 [ 28.309589] ? __pfx_read_tsc+0x10/0x10 [ 28.309882] ? ktime_get_ts64+0x84/0x230 [ 28.310575] kunit_try_run_case+0x1b3/0x490 [ 28.311451] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.312207] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.312736] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.313612] ? __kthread_parkme+0x82/0x160 [ 28.314444] ? preempt_count_sub+0x50/0x80 [ 28.314968] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.315839] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.316594] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.317584] kthread+0x257/0x310 [ 28.317928] ? __pfx_kthread+0x10/0x10 [ 28.318804] ret_from_fork+0x41/0x80 [ 28.319419] ? __pfx_kthread+0x10/0x10 [ 28.320040] ret_from_fork_asm+0x1a/0x30 [ 28.320786] </TASK> [ 28.321214] [ 28.321388] Allocated by task 267: [ 28.321917] kasan_save_stack+0x3d/0x60 [ 28.322636] kasan_save_track+0x18/0x40 [ 28.323526] kasan_save_alloc_info+0x3b/0x50 [ 28.324105] __kasan_kmalloc+0xb7/0xc0 [ 28.324719] __kmalloc_cache_noprof+0x184/0x410 [ 28.325422] kasan_strings+0xb3/0xb60 [ 28.326246] kunit_try_run_case+0x1b3/0x490 [ 28.326910] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.327465] kthread+0x257/0x310 [ 28.327934] ret_from_fork+0x41/0x80 [ 28.328576] ret_from_fork_asm+0x1a/0x30 [ 28.329026] [ 28.329612] Freed by task 267: [ 28.329960] kasan_save_stack+0x3d/0x60 [ 28.330604] kasan_save_track+0x18/0x40 [ 28.331265] kasan_save_free_info+0x3f/0x60 [ 28.331835] __kasan_slab_free+0x56/0x70 [ 28.332373] kfree+0x123/0x3f0 [ 28.333047] kasan_strings+0x13a/0xb60 [ 28.333509] kunit_try_run_case+0x1b3/0x490 [ 28.334068] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.334687] kthread+0x257/0x310 [ 28.335747] ret_from_fork+0x41/0x80 [ 28.336297] ret_from_fork_asm+0x1a/0x30 [ 28.336848] [ 28.337151] The buggy address belongs to the object at ffff888101ab9940 [ 28.337151] which belongs to the cache kmalloc-32 of size 32 [ 28.338680] The buggy address is located 16 bytes inside of [ 28.338680] freed 32-byte region [ffff888101ab9940, ffff888101ab9960) [ 28.340116] [ 28.340516] The buggy address belongs to the physical page: [ 28.340998] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ab9 [ 28.341818] flags: 0x200000000000000(node=0|zone=2) [ 28.342776] page_type: f5(slab) [ 28.343259] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.344069] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 28.345265] page dumped because: kasan: bad access detected [ 28.345846] [ 28.346100] Memory state around the buggy address: [ 28.346847] ffff888101ab9800: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.348100] ffff888101ab9880: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 28.348854] >ffff888101ab9900: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 28.349616] ^ [ 28.350325] ffff888101ab9980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.351346] ffff888101ab9a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.352307] ==================================================================