Date
Dec. 4, 2024, 3:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 32.435402] ================================================================== [ 32.436489] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 32.437187] Write of size 33 at addr fff00000c66e4f00 by task kunit_try_catch/174 [ 32.438501] [ 32.439421] CPU: 0 UID: 0 PID: 174 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241204 #1 [ 32.440794] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.441086] Hardware name: linux,dummy-virt (DT) [ 32.441390] Call trace: [ 32.441595] show_stack+0x20/0x38 (C) [ 32.442083] dump_stack_lvl+0x8c/0xd0 [ 32.442797] print_report+0x118/0x5e0 [ 32.444190] kasan_report+0xc8/0x118 [ 32.445008] kasan_check_range+0x100/0x1a8 [ 32.445686] __asan_memset+0x34/0x78 [ 32.446262] kmalloc_uaf_memset+0x170/0x310 [ 32.447244] kunit_try_run_case+0x14c/0x3d0 [ 32.448028] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.448742] kthread+0x24c/0x2d0 [ 32.449335] ret_from_fork+0x10/0x20 [ 32.450441] [ 32.450734] Allocated by task 174: [ 32.451271] kasan_save_stack+0x3c/0x68 [ 32.451931] kasan_save_track+0x20/0x40 [ 32.452495] kasan_save_alloc_info+0x40/0x58 [ 32.453143] __kasan_kmalloc+0xd4/0xd8 [ 32.453746] __kmalloc_cache_noprof+0x15c/0x3c0 [ 32.454788] kmalloc_uaf_memset+0xb8/0x310 [ 32.455359] kunit_try_run_case+0x14c/0x3d0 [ 32.456015] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.457129] kthread+0x24c/0x2d0 [ 32.458049] ret_from_fork+0x10/0x20 [ 32.458790] [ 32.459196] Freed by task 174: [ 32.459847] kasan_save_stack+0x3c/0x68 [ 32.460421] kasan_save_track+0x20/0x40 [ 32.461236] kasan_save_free_info+0x4c/0x78 [ 32.462128] __kasan_slab_free+0x6c/0x98 [ 32.462681] kfree+0x114/0x3c8 [ 32.463255] kmalloc_uaf_memset+0x11c/0x310 [ 32.463754] kunit_try_run_case+0x14c/0x3d0 [ 32.464516] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.465287] kthread+0x24c/0x2d0 [ 32.465824] ret_from_fork+0x10/0x20 [ 32.466321] [ 32.467461] The buggy address belongs to the object at fff00000c66e4f00 [ 32.467461] which belongs to the cache kmalloc-64 of size 64 [ 32.468973] The buggy address is located 0 bytes inside of [ 32.468973] freed 64-byte region [fff00000c66e4f00, fff00000c66e4f40) [ 32.471118] [ 32.471697] The buggy address belongs to the physical page: [ 32.472212] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1066e4 [ 32.473044] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 32.473959] page_type: f5(slab) [ 32.474688] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 32.475687] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 32.476484] page dumped because: kasan: bad access detected [ 32.478132] [ 32.478837] Memory state around the buggy address: [ 32.479348] fff00000c66e4e00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 32.480972] fff00000c66e4e80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 32.482456] >fff00000c66e4f00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 32.483811] ^ [ 32.484768] fff00000c66e4f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.486435] fff00000c66e5000: 00 00 00 fc fc fc fc fc 00 00 00 03 fc fc fc fc [ 32.488014] ==================================================================
[ 23.258142] ================================================================== [ 23.259474] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a4/0x360 [ 23.260481] Write of size 33 at addr ffff88810298a800 by task kunit_try_catch/194 [ 23.261041] [ 23.261322] CPU: 1 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241204 #1 [ 23.262160] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.262762] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 23.263901] Call Trace: [ 23.264414] <TASK> [ 23.264725] dump_stack_lvl+0x73/0xb0 [ 23.265166] print_report+0xd1/0x640 [ 23.265731] ? __virt_addr_valid+0x1db/0x2d0 [ 23.266110] ? kasan_complete_mode_report_info+0x64/0x200 [ 23.267109] kasan_report+0x102/0x140 [ 23.267664] ? kmalloc_uaf_memset+0x1a4/0x360 [ 23.268070] ? kmalloc_uaf_memset+0x1a4/0x360 [ 23.268747] kasan_check_range+0x10c/0x1c0 [ 23.269195] __asan_memset+0x27/0x50 [ 23.269701] kmalloc_uaf_memset+0x1a4/0x360 [ 23.270163] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 23.271037] ? __schedule+0xc3e/0x2790 [ 23.271627] ? __pfx_read_tsc+0x10/0x10 [ 23.272145] ? ktime_get_ts64+0x86/0x230 [ 23.272689] kunit_try_run_case+0x1b3/0x490 [ 23.273095] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.273790] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 23.274190] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 23.275210] ? __kthread_parkme+0x82/0x160 [ 23.275830] ? preempt_count_sub+0x50/0x80 [ 23.276307] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.276813] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 23.277574] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.278065] kthread+0x257/0x310 [ 23.278978] ? __pfx_kthread+0x10/0x10 [ 23.279599] ret_from_fork+0x41/0x80 [ 23.280070] ? __pfx_kthread+0x10/0x10 [ 23.280648] ret_from_fork_asm+0x1a/0x30 [ 23.281086] </TASK> [ 23.281597] [ 23.281824] Allocated by task 194: [ 23.282136] kasan_save_stack+0x3d/0x60 [ 23.283488] kasan_save_track+0x18/0x40 [ 23.283866] kasan_save_alloc_info+0x3b/0x50 [ 23.284329] __kasan_kmalloc+0xb7/0xc0 [ 23.284851] __kmalloc_cache_noprof+0x184/0x410 [ 23.285456] kmalloc_uaf_memset+0xaa/0x360 [ 23.285802] kunit_try_run_case+0x1b3/0x490 [ 23.286242] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.286765] kthread+0x257/0x310 [ 23.287879] ret_from_fork+0x41/0x80 [ 23.288591] ret_from_fork_asm+0x1a/0x30 [ 23.289009] [ 23.289211] Freed by task 194: [ 23.289477] kasan_save_stack+0x3d/0x60 [ 23.289894] kasan_save_track+0x18/0x40 [ 23.291197] kasan_save_free_info+0x3f/0x60 [ 23.291796] __kasan_slab_free+0x56/0x70 [ 23.292111] kfree+0x123/0x3f0 [ 23.292730] kmalloc_uaf_memset+0x12c/0x360 [ 23.293122] kunit_try_run_case+0x1b3/0x490 [ 23.293766] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.294950] kthread+0x257/0x310 [ 23.295466] ret_from_fork+0x41/0x80 [ 23.295855] ret_from_fork_asm+0x1a/0x30 [ 23.297179] [ 23.297690] The buggy address belongs to the object at ffff88810298a800 [ 23.297690] which belongs to the cache kmalloc-64 of size 64 [ 23.299168] The buggy address is located 0 bytes inside of [ 23.299168] freed 64-byte region [ffff88810298a800, ffff88810298a840) [ 23.300180] [ 23.300392] The buggy address belongs to the physical page: [ 23.300996] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10298a [ 23.302975] flags: 0x200000000000000(node=0|zone=2) [ 23.303561] page_type: f5(slab) [ 23.303816] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 23.304550] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 23.305079] page dumped because: kasan: bad access detected [ 23.305736] [ 23.306272] Memory state around the buggy address: [ 23.307136] ffff88810298a700: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 23.307570] ffff88810298a780: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 23.308776] >ffff88810298a800: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 23.309642] ^ [ 23.310003] ffff88810298a880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.311254] ffff88810298a900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.312315] ==================================================================