Date
Nov. 28, 2024, 2:36 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 30.939734] ================================================================== [ 30.940767] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 30.941566] Write of size 33 at addr fff00000c63ae900 by task kunit_try_catch/174 [ 30.942422] [ 30.942828] CPU: 1 UID: 0 PID: 174 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 30.944429] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.945088] Hardware name: linux,dummy-virt (DT) [ 30.945710] Call trace: [ 30.946264] show_stack+0x20/0x38 (C) [ 30.946936] dump_stack_lvl+0x8c/0xd0 [ 30.947610] print_report+0x118/0x5e0 [ 30.948218] kasan_report+0xc8/0x118 [ 30.948758] kasan_check_range+0x100/0x1a8 [ 30.949694] __asan_memset+0x34/0x78 [ 30.950273] kmalloc_uaf_memset+0x170/0x310 [ 30.950920] kunit_try_run_case+0x14c/0x3d0 [ 30.951486] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.952161] kthread+0x24c/0x2d0 [ 30.952754] ret_from_fork+0x10/0x20 [ 30.953810] [ 30.954270] Allocated by task 174: [ 30.954837] kasan_save_stack+0x3c/0x68 [ 30.955476] kasan_save_track+0x20/0x40 [ 30.956085] kasan_save_alloc_info+0x40/0x58 [ 30.956757] __kasan_kmalloc+0xd4/0xd8 [ 30.957376] __kmalloc_cache_noprof+0x15c/0x3c0 [ 30.958372] kmalloc_uaf_memset+0xb8/0x310 [ 30.959129] kunit_try_run_case+0x14c/0x3d0 [ 30.959676] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.960355] kthread+0x24c/0x2d0 [ 30.960896] ret_from_fork+0x10/0x20 [ 30.961956] [ 30.962485] Freed by task 174: [ 30.963089] kasan_save_stack+0x3c/0x68 [ 30.963614] kasan_save_track+0x20/0x40 [ 30.964536] kasan_save_free_info+0x4c/0x78 [ 30.965052] __kasan_slab_free+0x6c/0x98 [ 30.965826] kfree+0x114/0x3c8 [ 30.966536] kmalloc_uaf_memset+0x11c/0x310 [ 30.967063] kunit_try_run_case+0x14c/0x3d0 [ 30.967881] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.968723] kthread+0x24c/0x2d0 [ 30.969715] ret_from_fork+0x10/0x20 [ 30.970423] [ 30.970767] The buggy address belongs to the object at fff00000c63ae900 [ 30.970767] which belongs to the cache kmalloc-64 of size 64 [ 30.972237] The buggy address is located 0 bytes inside of [ 30.972237] freed 64-byte region [fff00000c63ae900, fff00000c63ae940) [ 30.973946] [ 30.974311] The buggy address belongs to the physical page: [ 30.974903] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1063ae [ 30.975759] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 30.976816] page_type: f5(slab) [ 30.977647] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 30.978493] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 30.979234] page dumped because: kasan: bad access detected [ 30.979905] [ 30.980251] Memory state around the buggy address: [ 30.980886] fff00000c63ae800: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 30.981705] fff00000c63ae880: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 30.982654] >fff00000c63ae900: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 30.983643] ^ [ 30.983879] fff00000c63ae980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.984677] fff00000c63aea00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.985811] ==================================================================
[ 21.864172] ================================================================== [ 21.865328] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a4/0x360 [ 21.866030] Write of size 33 at addr ffff888102a18d80 by task kunit_try_catch/194 [ 21.866905] [ 21.867303] CPU: 0 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 21.868687] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.869158] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 21.870138] Call Trace: [ 21.870493] <TASK> [ 21.870869] dump_stack_lvl+0x73/0xb0 [ 21.871444] print_report+0xd1/0x640 [ 21.872031] ? __virt_addr_valid+0x1db/0x2d0 [ 21.872628] ? kasan_complete_mode_report_info+0x64/0x200 [ 21.873116] kasan_report+0x102/0x140 [ 21.873753] ? kmalloc_uaf_memset+0x1a4/0x360 [ 21.874089] ? kmalloc_uaf_memset+0x1a4/0x360 [ 21.874922] kasan_check_range+0x10c/0x1c0 [ 21.875297] __asan_memset+0x27/0x50 [ 21.876013] kmalloc_uaf_memset+0x1a4/0x360 [ 21.876756] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 21.877205] ? __schedule+0xc3e/0x2790 [ 21.877811] ? __pfx_read_tsc+0x10/0x10 [ 21.878500] ? ktime_get_ts64+0x84/0x230 [ 21.878833] kunit_try_run_case+0x1b3/0x490 [ 21.879410] ? __pfx_kunit_try_run_case+0x10/0x10 [ 21.879846] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 21.880398] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 21.880979] ? __kthread_parkme+0x82/0x160 [ 21.881484] ? preempt_count_sub+0x50/0x80 [ 21.881946] ? __pfx_kunit_try_run_case+0x10/0x10 [ 21.882424] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 21.883014] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 21.883662] kthread+0x257/0x310 [ 21.884051] ? __pfx_kthread+0x10/0x10 [ 21.884527] ret_from_fork+0x41/0x80 [ 21.884889] ? __pfx_kthread+0x10/0x10 [ 21.885234] ret_from_fork_asm+0x1a/0x30 [ 21.885661] </TASK> [ 21.885972] [ 21.886158] Allocated by task 194: [ 21.886589] kasan_save_stack+0x3d/0x60 [ 21.886883] kasan_save_track+0x18/0x40 [ 21.887213] kasan_save_alloc_info+0x3b/0x50 [ 21.887729] __kasan_kmalloc+0xb7/0xc0 [ 21.888269] __kmalloc_cache_noprof+0x184/0x410 [ 21.888863] kmalloc_uaf_memset+0xaa/0x360 [ 21.889290] kunit_try_run_case+0x1b3/0x490 [ 21.889698] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 21.890283] kthread+0x257/0x310 [ 21.890566] ret_from_fork+0x41/0x80 [ 21.890832] ret_from_fork_asm+0x1a/0x30 [ 21.891433] [ 21.891727] Freed by task 194: [ 21.892217] kasan_save_stack+0x3d/0x60 [ 21.892561] kasan_save_track+0x18/0x40 [ 21.893120] kasan_save_free_info+0x3f/0x60 [ 21.893447] __kasan_slab_free+0x56/0x70 [ 21.894008] kfree+0x123/0x3f0 [ 21.894488] kmalloc_uaf_memset+0x12c/0x360 [ 21.894981] kunit_try_run_case+0x1b3/0x490 [ 21.895563] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 21.895968] kthread+0x257/0x310 [ 21.896556] ret_from_fork+0x41/0x80 [ 21.896971] ret_from_fork_asm+0x1a/0x30 [ 21.897724] [ 21.897883] The buggy address belongs to the object at ffff888102a18d80 [ 21.897883] which belongs to the cache kmalloc-64 of size 64 [ 21.899430] The buggy address is located 0 bytes inside of [ 21.899430] freed 64-byte region [ffff888102a18d80, ffff888102a18dc0) [ 21.900557] [ 21.901122] The buggy address belongs to the physical page: [ 21.901947] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a18 [ 21.902958] flags: 0x200000000000000(node=0|zone=2) [ 21.903511] page_type: f5(slab) [ 21.903742] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 21.904469] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 21.905183] page dumped because: kasan: bad access detected [ 21.905759] [ 21.906013] Memory state around the buggy address: [ 21.906439] ffff888102a18c80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.907051] ffff888102a18d00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.907831] >ffff888102a18d80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.908540] ^ [ 21.908960] ffff888102a18e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.909683] ffff888102a18e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.910478] ==================================================================