Date
Dec. 6, 2024, 3:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 34.148178] ================================================================== [ 34.150109] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 34.151910] Read of size 1 at addr fff00000c69e4d10 by task kunit_try_catch/248 [ 34.152770] [ 34.153181] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241206 #1 [ 34.154683] Tainted: [B]=BAD_PAGE, [N]=TEST [ 34.155317] Hardware name: linux,dummy-virt (DT) [ 34.155997] Call trace: [ 34.156442] show_stack+0x20/0x38 (C) [ 34.157068] dump_stack_lvl+0x8c/0xd0 [ 34.157708] print_report+0x118/0x5e0 [ 34.158659] kasan_report+0xc8/0x118 [ 34.159202] __asan_report_load1_noabort+0x20/0x30 [ 34.159994] strcmp+0xc0/0xc8 [ 34.160575] kasan_strings+0x228/0x8d8 [ 34.161150] kunit_try_run_case+0x14c/0x3d0 [ 34.161831] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.162898] kthread+0x24c/0x2d0 [ 34.163426] ret_from_fork+0x10/0x20 [ 34.164080] [ 34.164415] Allocated by task 248: [ 34.164963] kasan_save_stack+0x3c/0x68 [ 34.165614] kasan_save_track+0x20/0x40 [ 34.166441] kasan_save_alloc_info+0x40/0x58 [ 34.167149] __kasan_kmalloc+0xd4/0xd8 [ 34.167707] __kmalloc_cache_noprof+0x15c/0x3c0 [ 34.168392] kasan_strings+0xb0/0x8d8 [ 34.169028] kunit_try_run_case+0x14c/0x3d0 [ 34.169710] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.170936] kthread+0x24c/0x2d0 [ 34.171391] ret_from_fork+0x10/0x20 [ 34.172016] [ 34.172365] Freed by task 248: [ 34.173372] kasan_save_stack+0x3c/0x68 [ 34.173949] kasan_save_track+0x20/0x40 [ 34.174870] kasan_save_free_info+0x4c/0x78 [ 34.175562] __kasan_slab_free+0x6c/0x98 [ 34.176199] kfree+0x114/0x3c8 [ 34.176769] kasan_strings+0x124/0x8d8 [ 34.177298] kunit_try_run_case+0x14c/0x3d0 [ 34.177980] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.179069] kthread+0x24c/0x2d0 [ 34.179611] ret_from_fork+0x10/0x20 [ 34.180223] [ 34.180561] The buggy address belongs to the object at fff00000c69e4d00 [ 34.180561] which belongs to the cache kmalloc-32 of size 32 [ 34.181821] The buggy address is located 16 bytes inside of [ 34.181821] freed 32-byte region [fff00000c69e4d00, fff00000c69e4d20) [ 34.183371] [ 34.183733] The buggy address belongs to the physical page: [ 34.184469] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1069e4 [ 34.185397] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.186503] page_type: f5(slab) [ 34.187086] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 34.188007] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 34.188898] page dumped because: kasan: bad access detected [ 34.189635] [ 34.190008] Memory state around the buggy address: [ 34.191182] fff00000c69e4c00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 34.192002] fff00000c69e4c80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 34.193415] >fff00000c69e4d00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 34.194248] ^ [ 34.194841] fff00000c69e4d80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 34.196030] fff00000c69e4e00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 34.196825] ==================================================================
[ 27.068226] ================================================================== [ 27.072091] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 27.072741] Read of size 1 at addr ffff888102481690 by task kunit_try_catch/267 [ 27.074030] [ 27.075646] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241206 #1 [ 27.076524] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.077067] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.078477] Call Trace: [ 27.079612] <TASK> [ 27.079771] dump_stack_lvl+0x73/0xb0 [ 27.080059] print_report+0xd1/0x640 [ 27.080316] ? __virt_addr_valid+0x1db/0x2d0 [ 27.080586] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.081587] kasan_report+0x102/0x140 [ 27.082583] ? strcmp+0xb0/0xc0 [ 27.083738] ? strcmp+0xb0/0xc0 [ 27.084419] __asan_report_load1_noabort+0x18/0x20 [ 27.085672] strcmp+0xb0/0xc0 [ 27.086040] kasan_strings+0x2d3/0xb60 [ 27.086427] ? __pfx_kasan_strings+0x10/0x10 [ 27.087522] ? __schedule+0xc70/0x27e0 [ 27.088492] ? __pfx_read_tsc+0x10/0x10 [ 27.089745] ? ktime_get_ts64+0x86/0x230 [ 27.090201] kunit_try_run_case+0x1b3/0x490 [ 27.091516] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.092041] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 27.093268] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.093881] ? __kthread_parkme+0x82/0x160 [ 27.095123] ? preempt_count_sub+0x50/0x80 [ 27.095547] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.096164] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.096838] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.097980] kthread+0x257/0x310 [ 27.098966] ? __pfx_kthread+0x10/0x10 [ 27.100123] ret_from_fork+0x41/0x80 [ 27.101063] ? __pfx_kthread+0x10/0x10 [ 27.101472] ret_from_fork_asm+0x1a/0x30 [ 27.102230] </TASK> [ 27.103375] [ 27.103987] Allocated by task 267: [ 27.104572] kasan_save_stack+0x3d/0x60 [ 27.105044] kasan_save_track+0x18/0x40 [ 27.105427] kasan_save_alloc_info+0x3b/0x50 [ 27.105999] __kasan_kmalloc+0xb7/0xc0 [ 27.107441] __kmalloc_cache_noprof+0x184/0x410 [ 27.107901] kasan_strings+0xb9/0xb60 [ 27.108592] kunit_try_run_case+0x1b3/0x490 [ 27.109446] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.110949] kthread+0x257/0x310 [ 27.111628] ret_from_fork+0x41/0x80 [ 27.112350] ret_from_fork_asm+0x1a/0x30 [ 27.112805] [ 27.114149] Freed by task 267: [ 27.114614] kasan_save_stack+0x3d/0x60 [ 27.115497] kasan_save_track+0x18/0x40 [ 27.116021] kasan_save_free_info+0x3f/0x60 [ 27.116392] __kasan_slab_free+0x56/0x70 [ 27.116841] kfree+0x123/0x3f0 [ 27.117232] kasan_strings+0x13c/0xb60 [ 27.117637] kunit_try_run_case+0x1b3/0x490 [ 27.118117] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.118477] kthread+0x257/0x310 [ 27.118730] ret_from_fork+0x41/0x80 [ 27.120313] ret_from_fork_asm+0x1a/0x30 [ 27.121305] [ 27.121687] The buggy address belongs to the object at ffff888102481680 [ 27.121687] which belongs to the cache kmalloc-32 of size 32 [ 27.124108] The buggy address is located 16 bytes inside of [ 27.124108] freed 32-byte region [ffff888102481680, ffff8881024816a0) [ 27.126062] [ 27.126413] The buggy address belongs to the physical page: [ 27.127423] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102481 [ 27.128005] flags: 0x200000000000000(node=0|zone=2) [ 27.128433] page_type: f5(slab) [ 27.128894] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 27.130222] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.131296] page dumped because: kasan: bad access detected [ 27.132290] [ 27.132658] Memory state around the buggy address: [ 27.133305] ffff888102481580: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.134396] ffff888102481600: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 27.135319] >ffff888102481680: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.136779] ^ [ 27.138292] ffff888102481700: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.139110] ffff888102481780: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.139859] ==================================================================