Date
June 2, 2025, 2:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.003050] ================================================================== [ 19.003818] BUG: KASAN: slab-use-after-free in kmalloc_uaf+0x300/0x338 [ 19.004730] Read of size 1 at addr fff00000c58f5f28 by task kunit_try_catch/174 [ 19.005833] [ 19.006410] CPU: 1 UID: 0 PID: 174 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 19.006586] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.006905] Hardware name: linux,dummy-virt (DT) [ 19.006991] Call trace: [ 19.007023] show_stack+0x20/0x38 (C) [ 19.007097] dump_stack_lvl+0x8c/0xd0 [ 19.007166] print_report+0x118/0x608 [ 19.007227] kasan_report+0xdc/0x128 [ 19.007277] __asan_report_load1_noabort+0x20/0x30 [ 19.007330] kmalloc_uaf+0x300/0x338 [ 19.007378] kunit_try_run_case+0x170/0x3f0 [ 19.007430] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.007486] kthread+0x318/0x620 [ 19.007534] ret_from_fork+0x10/0x20 [ 19.007589] [ 19.012390] Allocated by task 174: [ 19.012783] kasan_save_stack+0x3c/0x68 [ 19.013330] kasan_save_track+0x20/0x40 [ 19.013767] kasan_save_alloc_info+0x40/0x58 [ 19.014604] __kasan_kmalloc+0xd4/0xd8 [ 19.015146] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.015607] kmalloc_uaf+0xb8/0x338 [ 19.016059] kunit_try_run_case+0x170/0x3f0 [ 19.016530] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.017074] kthread+0x318/0x620 [ 19.017505] ret_from_fork+0x10/0x20 [ 19.017927] [ 19.018247] Freed by task 174: [ 19.018623] kasan_save_stack+0x3c/0x68 [ 19.019280] kasan_save_track+0x20/0x40 [ 19.019706] kasan_save_free_info+0x4c/0x78 [ 19.020137] __kasan_slab_free+0x6c/0x98 [ 19.020539] kfree+0x214/0x3c8 [ 19.020984] kmalloc_uaf+0x11c/0x338 [ 19.021458] kunit_try_run_case+0x170/0x3f0 [ 19.021938] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.022689] kthread+0x318/0x620 [ 19.023142] ret_from_fork+0x10/0x20 [ 19.023634] [ 19.023927] The buggy address belongs to the object at fff00000c58f5f20 [ 19.023927] which belongs to the cache kmalloc-16 of size 16 [ 19.024820] The buggy address is located 8 bytes inside of [ 19.024820] freed 16-byte region [fff00000c58f5f20, fff00000c58f5f30) [ 19.025756] [ 19.026345] The buggy address belongs to the physical page: [ 19.026876] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1058f5 [ 19.028321] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.028892] page_type: f5(slab) [ 19.029386] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 19.030055] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 19.030826] page dumped because: kasan: bad access detected [ 19.031595] [ 19.031869] Memory state around the buggy address: [ 19.032285] fff00000c58f5e00: 00 02 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 19.032926] fff00000c58f5e80: fa fb fc fc fa fb fc fc 00 04 fc fc fa fb fc fc [ 19.033639] >fff00000c58f5f00: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 19.034467] ^ [ 19.034961] fff00000c58f5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.035584] fff00000c58f6000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 19.036305] ==================================================================
[ 12.931521] ================================================================== [ 12.932220] BUG: KASAN: slab-use-after-free in kmalloc_uaf+0x322/0x380 [ 12.932495] Read of size 1 at addr ffff888101b5aba8 by task kunit_try_catch/192 [ 12.932775] [ 12.932934] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 12.932985] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.932996] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.933024] Call Trace: [ 12.933036] <TASK> [ 12.933050] dump_stack_lvl+0x73/0xb0 [ 12.933073] print_report+0xd1/0x650 [ 12.933093] ? __virt_addr_valid+0x1db/0x2d0 [ 12.933115] ? kmalloc_uaf+0x322/0x380 [ 12.933133] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.933157] ? kmalloc_uaf+0x322/0x380 [ 12.933176] kasan_report+0x140/0x180 [ 12.933197] ? kmalloc_uaf+0x322/0x380 [ 12.933220] __asan_report_load1_noabort+0x18/0x20 [ 12.933242] kmalloc_uaf+0x322/0x380 [ 12.933261] ? __pfx_kmalloc_uaf+0x10/0x10 [ 12.933281] ? __schedule+0xce8/0x2840 [ 12.933303] ? __pfx_read_tsc+0x10/0x10 [ 12.933324] ? ktime_get_ts64+0x86/0x230 [ 12.933349] kunit_try_run_case+0x1a6/0x480 [ 12.933371] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.933427] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 12.933450] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.933473] ? __kthread_parkme+0x82/0x160 [ 12.933507] ? preempt_count_sub+0x50/0x80 [ 12.933531] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.933572] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.933606] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.933631] kthread+0x324/0x6e0 [ 12.933662] ? trace_preempt_on+0x20/0xc0 [ 12.933685] ? __pfx_kthread+0x10/0x10 [ 12.933706] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.933727] ? calculate_sigpending+0x7b/0xa0 [ 12.933754] ? __pfx_kthread+0x10/0x10 [ 12.933776] ret_from_fork+0x41/0x80 [ 12.933794] ? __pfx_kthread+0x10/0x10 [ 12.933815] ret_from_fork_asm+0x1a/0x30 [ 12.933845] </TASK> [ 12.933855] [ 12.942701] Allocated by task 192: [ 12.943039] kasan_save_stack+0x45/0x70 [ 12.943201] kasan_save_track+0x18/0x40 [ 12.943601] kasan_save_alloc_info+0x3b/0x50 [ 12.943780] __kasan_kmalloc+0xb7/0xc0 [ 12.943976] __kmalloc_cache_noprof+0x18a/0x420 [ 12.944201] kmalloc_uaf+0xab/0x380 [ 12.944447] kunit_try_run_case+0x1a6/0x480 [ 12.944605] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.944774] kthread+0x324/0x6e0 [ 12.945100] ret_from_fork+0x41/0x80 [ 12.945328] ret_from_fork_asm+0x1a/0x30 [ 12.945462] [ 12.945529] Freed by task 192: [ 12.946204] kasan_save_stack+0x45/0x70 [ 12.946396] kasan_save_track+0x18/0x40 [ 12.946594] kasan_save_free_info+0x3f/0x60 [ 12.946767] __kasan_slab_free+0x56/0x70 [ 12.946897] kfree+0x224/0x3f0 [ 12.947008] kmalloc_uaf+0x12d/0x380 [ 12.947143] kunit_try_run_case+0x1a6/0x480 [ 12.947281] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.947562] kthread+0x324/0x6e0 [ 12.947900] ret_from_fork+0x41/0x80 [ 12.948087] ret_from_fork_asm+0x1a/0x30 [ 12.948283] [ 12.948378] The buggy address belongs to the object at ffff888101b5aba0 [ 12.948378] which belongs to the cache kmalloc-16 of size 16 [ 12.949367] The buggy address is located 8 bytes inside of [ 12.949367] freed 16-byte region [ffff888101b5aba0, ffff888101b5abb0) [ 12.950166] [ 12.950333] The buggy address belongs to the physical page: [ 12.950530] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101b5a [ 12.951007] flags: 0x200000000000000(node=0|zone=2) [ 12.951258] page_type: f5(slab) [ 12.951423] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.951954] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.952409] page dumped because: kasan: bad access detected [ 12.952829] [ 12.952914] Memory state around the buggy address: [ 12.953083] ffff888101b5aa80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.953291] ffff888101b5ab00: fa fb fc fc fa fb fc fc 00 05 fc fc fa fb fc fc [ 12.953499] >ffff888101b5ab80: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 12.953973] ^ [ 12.954248] ffff888101b5ac00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.954989] ffff888101b5ac80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.955380] ==================================================================