Date
Dec. 9, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 27.030890] ================================================================== [ 27.032777] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 27.033332] Read of size 1 at addr fff00000c1204c50 by task kunit_try_catch/247 [ 27.034615] [ 27.035048] CPU: 0 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc2-next-20241209 #1 [ 27.036226] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.037123] Hardware name: linux,dummy-virt (DT) [ 27.037812] Call trace: [ 27.038170] show_stack+0x20/0x38 (C) [ 27.038652] dump_stack_lvl+0x8c/0xd0 [ 27.039529] print_report+0x118/0x5e0 [ 27.040176] kasan_report+0xc8/0x118 [ 27.041047] __asan_report_load1_noabort+0x20/0x30 [ 27.041997] strlen+0xa8/0xb0 [ 27.042758] kasan_strings+0x304/0x8d8 [ 27.043562] kunit_try_run_case+0x14c/0x3d0 [ 27.044304] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.045151] kthread+0x24c/0x2d0 [ 27.045678] ret_from_fork+0x10/0x20 [ 27.046447] [ 27.046778] Allocated by task 247: [ 27.047725] kasan_save_stack+0x3c/0x68 [ 27.048252] kasan_save_track+0x20/0x40 [ 27.048768] kasan_save_alloc_info+0x40/0x58 [ 27.049292] __kasan_kmalloc+0xd4/0xd8 [ 27.050328] __kmalloc_cache_noprof+0x15c/0x3c0 [ 27.051529] kasan_strings+0xb0/0x8d8 [ 27.052034] kunit_try_run_case+0x14c/0x3d0 [ 27.052672] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.053409] kthread+0x24c/0x2d0 [ 27.053954] ret_from_fork+0x10/0x20 [ 27.054433] [ 27.054752] Freed by task 247: [ 27.055893] kasan_save_stack+0x3c/0x68 [ 27.056482] kasan_save_track+0x20/0x40 [ 27.057037] kasan_save_free_info+0x4c/0x78 [ 27.057611] __kasan_slab_free+0x6c/0x98 [ 27.058162] kfree+0x114/0x3c8 [ 27.058616] kasan_strings+0x124/0x8d8 [ 27.059196] kunit_try_run_case+0x14c/0x3d0 [ 27.060256] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.060982] kthread+0x24c/0x2d0 [ 27.061486] ret_from_fork+0x10/0x20 [ 27.062015] [ 27.062392] The buggy address belongs to the object at fff00000c1204c40 [ 27.062392] which belongs to the cache kmalloc-32 of size 32 [ 27.064116] The buggy address is located 16 bytes inside of [ 27.064116] freed 32-byte region [fff00000c1204c40, fff00000c1204c60) [ 27.065177] [ 27.065515] The buggy address belongs to the physical page: [ 27.066653] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101204 [ 27.067881] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 27.068774] page_type: f5(slab) [ 27.069382] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 27.070330] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.071077] page dumped because: kasan: bad access detected [ 27.071692] [ 27.072770] Memory state around the buggy address: [ 27.073453] fff00000c1204b00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.074456] fff00000c1204b80: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 27.075734] >fff00000c1204c00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 27.076437] ^ [ 27.077196] fff00000c1204c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.077976] fff00000c1204d00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 27.078731] ==================================================================
[ 27.475131] ================================================================== [ 27.475767] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 27.476734] Read of size 1 at addr ffff888102964dd0 by task kunit_try_catch/266 [ 27.477551] [ 27.478660] CPU: 0 UID: 0 PID: 266 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc2-next-20241209 #1 [ 27.479611] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.480206] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.481060] Call Trace: [ 27.481396] <TASK> [ 27.481738] dump_stack_lvl+0x73/0xb0 [ 27.482192] print_report+0xd1/0x640 [ 27.482770] ? __virt_addr_valid+0x1db/0x2d0 [ 27.483228] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.483740] kasan_report+0x102/0x140 [ 27.484248] ? strlen+0x8f/0xb0 [ 27.484697] ? strlen+0x8f/0xb0 [ 27.485410] __asan_report_load1_noabort+0x18/0x20 [ 27.485970] strlen+0x8f/0xb0 [ 27.486495] kasan_strings+0x425/0xb60 [ 27.487078] ? __pfx_kasan_strings+0x10/0x10 [ 27.487639] ? __schedule+0xc70/0x27e0 [ 27.487979] ? __pfx_read_tsc+0x10/0x10 [ 27.488573] ? ktime_get_ts64+0x86/0x230 [ 27.488880] kunit_try_run_case+0x1b3/0x490 [ 27.489664] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.490310] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 27.490778] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.491155] ? __kthread_parkme+0x82/0x160 [ 27.491907] ? preempt_count_sub+0x50/0x80 [ 27.492527] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.493113] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.493692] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.494498] kthread+0x257/0x310 [ 27.494933] ? __pfx_kthread+0x10/0x10 [ 27.495338] ret_from_fork+0x41/0x80 [ 27.495790] ? __pfx_kthread+0x10/0x10 [ 27.496504] ret_from_fork_asm+0x1a/0x30 [ 27.496842] </TASK> [ 27.497367] [ 27.497689] Allocated by task 266: [ 27.498122] kasan_save_stack+0x3d/0x60 [ 27.498664] kasan_save_track+0x18/0x40 [ 27.499243] kasan_save_alloc_info+0x3b/0x50 [ 27.499762] __kasan_kmalloc+0xb7/0xc0 [ 27.500264] __kmalloc_cache_noprof+0x184/0x410 [ 27.500808] kasan_strings+0xb9/0xb60 [ 27.501264] kunit_try_run_case+0x1b3/0x490 [ 27.501753] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.502500] kthread+0x257/0x310 [ 27.503027] ret_from_fork+0x41/0x80 [ 27.503409] ret_from_fork_asm+0x1a/0x30 [ 27.503874] [ 27.504189] Freed by task 266: [ 27.504566] kasan_save_stack+0x3d/0x60 [ 27.504857] kasan_save_track+0x18/0x40 [ 27.505514] kasan_save_free_info+0x3f/0x60 [ 27.506128] __kasan_slab_free+0x56/0x70 [ 27.506570] kfree+0x123/0x3f0 [ 27.507151] kasan_strings+0x13c/0xb60 [ 27.507717] kunit_try_run_case+0x1b3/0x490 [ 27.508216] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.508829] kthread+0x257/0x310 [ 27.509323] ret_from_fork+0x41/0x80 [ 27.509693] ret_from_fork_asm+0x1a/0x30 [ 27.510246] [ 27.510462] The buggy address belongs to the object at ffff888102964dc0 [ 27.510462] which belongs to the cache kmalloc-32 of size 32 [ 27.511491] The buggy address is located 16 bytes inside of [ 27.511491] freed 32-byte region [ffff888102964dc0, ffff888102964de0) [ 27.513030] [ 27.513196] The buggy address belongs to the physical page: [ 27.514075] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102964 [ 27.515110] flags: 0x200000000000000(node=0|zone=2) [ 27.515550] page_type: f5(slab) [ 27.516182] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 27.516941] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.517771] page dumped because: kasan: bad access detected [ 27.518616] [ 27.518893] Memory state around the buggy address: [ 27.519384] ffff888102964c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.520171] ffff888102964d00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.520855] >ffff888102964d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.521807] ^ [ 27.522716] ffff888102964e00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.523514] ffff888102964e80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 27.524327] ==================================================================