Date
Dec. 4, 2024, 3:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 35.314743] ================================================================== [ 35.315557] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 35.316283] Read of size 1 at addr fff00000c6643a90 by task kunit_try_catch/247 [ 35.317200] [ 35.317587] CPU: 0 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241204 #1 [ 35.318987] Tainted: [B]=BAD_PAGE, [N]=TEST [ 35.319555] Hardware name: linux,dummy-virt (DT) [ 35.320072] Call trace: [ 35.320620] show_stack+0x20/0x38 (C) [ 35.321977] dump_stack_lvl+0x8c/0xd0 [ 35.322547] print_report+0x118/0x5e0 [ 35.323185] kasan_report+0xc8/0x118 [ 35.323834] __asan_report_load1_noabort+0x20/0x30 [ 35.324524] strlen+0xa8/0xb0 [ 35.325145] kasan_strings+0x304/0x8d8 [ 35.325770] kunit_try_run_case+0x14c/0x3d0 [ 35.326466] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 35.327313] kthread+0x24c/0x2d0 [ 35.327948] ret_from_fork+0x10/0x20 [ 35.328501] [ 35.328920] Allocated by task 247: [ 35.329508] kasan_save_stack+0x3c/0x68 [ 35.330222] kasan_save_track+0x20/0x40 [ 35.330781] kasan_save_alloc_info+0x40/0x58 [ 35.331509] __kasan_kmalloc+0xd4/0xd8 [ 35.332002] __kmalloc_cache_noprof+0x15c/0x3c0 [ 35.332772] kasan_strings+0xb0/0x8d8 [ 35.333290] kunit_try_run_case+0x14c/0x3d0 [ 35.334214] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 35.334878] kthread+0x24c/0x2d0 [ 35.335179] ret_from_fork+0x10/0x20 [ 35.335458] [ 35.335659] Freed by task 247: [ 35.336048] kasan_save_stack+0x3c/0x68 [ 35.336868] kasan_save_track+0x20/0x40 [ 35.337382] kasan_save_free_info+0x4c/0x78 [ 35.338239] __kasan_slab_free+0x6c/0x98 [ 35.339116] kfree+0x114/0x3c8 [ 35.339580] kasan_strings+0x124/0x8d8 [ 35.340254] kunit_try_run_case+0x14c/0x3d0 [ 35.341073] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 35.341888] kthread+0x24c/0x2d0 [ 35.342489] ret_from_fork+0x10/0x20 [ 35.343180] [ 35.343585] The buggy address belongs to the object at fff00000c6643a80 [ 35.343585] which belongs to the cache kmalloc-32 of size 32 [ 35.345161] The buggy address is located 16 bytes inside of [ 35.345161] freed 32-byte region [fff00000c6643a80, fff00000c6643aa0) [ 35.346736] [ 35.347174] The buggy address belongs to the physical page: [ 35.347953] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106643 [ 35.349125] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 35.350011] page_type: f5(slab) [ 35.350686] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 35.351697] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 35.352578] page dumped because: kasan: bad access detected [ 35.353420] [ 35.353786] Memory state around the buggy address: [ 35.354548] fff00000c6643980: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 35.355478] fff00000c6643a00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 35.356434] >fff00000c6643a80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 35.357357] ^ [ 35.357964] fff00000c6643b00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 35.358996] fff00000c6643b80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 35.359901] ==================================================================
[ 26.125119] ================================================================== [ 26.125585] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 26.127759] Read of size 1 at addr ffff88810299ded0 by task kunit_try_catch/267 [ 26.129256] [ 26.129440] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241204 #1 [ 26.130468] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.130884] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.132217] Call Trace: [ 26.132740] <TASK> [ 26.133054] dump_stack_lvl+0x73/0xb0 [ 26.133790] print_report+0xd1/0x640 [ 26.134182] ? __virt_addr_valid+0x1db/0x2d0 [ 26.134766] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.135856] kasan_report+0x102/0x140 [ 26.136492] ? strlen+0x8f/0xb0 [ 26.136862] ? strlen+0x8f/0xb0 [ 26.137239] __asan_report_load1_noabort+0x18/0x20 [ 26.137929] strlen+0x8f/0xb0 [ 26.138415] kasan_strings+0x425/0xb60 [ 26.138884] ? __pfx_kasan_strings+0x10/0x10 [ 26.139809] ? __pfx_kasan_strings+0x10/0x10 [ 26.140224] kunit_try_run_case+0x1b3/0x490 [ 26.140908] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.141482] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 26.141825] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.142571] ? __kthread_parkme+0x82/0x160 [ 26.143080] ? preempt_count_sub+0x50/0x80 [ 26.143893] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.144668] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.145378] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.145902] kthread+0x257/0x310 [ 26.146229] ? __pfx_kthread+0x10/0x10 [ 26.146791] ret_from_fork+0x41/0x80 [ 26.147173] ? __pfx_kthread+0x10/0x10 [ 26.147639] ret_from_fork_asm+0x1a/0x30 [ 26.148133] </TASK> [ 26.149069] [ 26.149510] Allocated by task 267: [ 26.149983] kasan_save_stack+0x3d/0x60 [ 26.150695] kasan_save_track+0x18/0x40 [ 26.151097] kasan_save_alloc_info+0x3b/0x50 [ 26.151759] __kasan_kmalloc+0xb7/0xc0 [ 26.152121] __kmalloc_cache_noprof+0x184/0x410 [ 26.153251] kasan_strings+0xb9/0xb60 [ 26.153632] kunit_try_run_case+0x1b3/0x490 [ 26.154064] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.154592] kthread+0x257/0x310 [ 26.154886] ret_from_fork+0x41/0x80 [ 26.155734] ret_from_fork_asm+0x1a/0x30 [ 26.156220] [ 26.157143] Freed by task 267: [ 26.157759] kasan_save_stack+0x3d/0x60 [ 26.158391] kasan_save_track+0x18/0x40 [ 26.158797] kasan_save_free_info+0x3f/0x60 [ 26.159163] __kasan_slab_free+0x56/0x70 [ 26.159801] kfree+0x123/0x3f0 [ 26.160083] kasan_strings+0x13c/0xb60 [ 26.161056] kunit_try_run_case+0x1b3/0x490 [ 26.161767] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.162398] kthread+0x257/0x310 [ 26.162804] ret_from_fork+0x41/0x80 [ 26.163106] ret_from_fork_asm+0x1a/0x30 [ 26.163778] [ 26.164019] The buggy address belongs to the object at ffff88810299dec0 [ 26.164019] which belongs to the cache kmalloc-32 of size 32 [ 26.165862] The buggy address is located 16 bytes inside of [ 26.165862] freed 32-byte region [ffff88810299dec0, ffff88810299dee0) [ 26.166997] [ 26.167186] The buggy address belongs to the physical page: [ 26.167990] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10299d [ 26.169008] flags: 0x200000000000000(node=0|zone=2) [ 26.169723] page_type: f5(slab) [ 26.170100] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 26.170982] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 26.171935] page dumped because: kasan: bad access detected [ 26.172276] [ 26.172505] Memory state around the buggy address: [ 26.172951] ffff88810299dd80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.174546] ffff88810299de00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 26.175417] >ffff88810299de80: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 26.176033] ^ [ 26.176746] ffff88810299df00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.177822] ffff88810299df80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 26.178393] ==================================================================