Date
Nov. 27, 2024, 3:37 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 48.243918] ================================================================== [ 48.245548] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 48.246189] Write of size 33 at addr fff00000c616ad00 by task kunit_try_catch/175 [ 48.247790] [ 48.248268] CPU: 0 UID: 0 PID: 175 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 48.250176] Tainted: [B]=BAD_PAGE, [N]=TEST [ 48.250837] Hardware name: linux,dummy-virt (DT) [ 48.251529] Call trace: [ 48.252098] show_stack+0x20/0x38 (C) [ 48.252795] dump_stack_lvl+0x8c/0xd0 [ 48.253641] print_report+0x118/0x5e0 [ 48.254664] kasan_report+0xc8/0x118 [ 48.255440] kasan_check_range+0x100/0x1a8 [ 48.256310] __asan_memset+0x34/0x78 [ 48.256857] kmalloc_uaf_memset+0x170/0x310 [ 48.257920] kunit_try_run_case+0x14c/0x3d0 [ 48.258697] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 48.259375] kthread+0x24c/0x2d0 [ 48.259987] ret_from_fork+0x10/0x20 [ 48.260544] [ 48.260876] Allocated by task 175: [ 48.261748] kasan_save_stack+0x3c/0x68 [ 48.262379] kasan_save_track+0x20/0x40 [ 48.262934] kasan_save_alloc_info+0x40/0x58 [ 48.264226] __kasan_kmalloc+0xd4/0xd8 [ 48.264741] __kmalloc_cache_noprof+0x15c/0x3c0 [ 48.265916] kmalloc_uaf_memset+0xb8/0x310 [ 48.266523] kunit_try_run_case+0x14c/0x3d0 [ 48.267080] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 48.267739] kthread+0x24c/0x2d0 [ 48.268314] ret_from_fork+0x10/0x20 [ 48.268797] [ 48.269132] Freed by task 175: [ 48.270213] kasan_save_stack+0x3c/0x68 [ 48.271044] kasan_save_track+0x20/0x40 [ 48.271588] kasan_save_free_info+0x4c/0x78 [ 48.272454] __kasan_slab_free+0x6c/0x98 [ 48.272863] kfree+0x114/0x3c8 [ 48.273965] kmalloc_uaf_memset+0x11c/0x310 [ 48.274605] kunit_try_run_case+0x14c/0x3d0 [ 48.275196] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 48.275849] kthread+0x24c/0x2d0 [ 48.276515] ret_from_fork+0x10/0x20 [ 48.277009] [ 48.277319] The buggy address belongs to the object at fff00000c616ad00 [ 48.277319] which belongs to the cache kmalloc-64 of size 64 [ 48.279615] The buggy address is located 0 bytes inside of [ 48.279615] freed 64-byte region [fff00000c616ad00, fff00000c616ad40) [ 48.280851] [ 48.281519] The buggy address belongs to the physical page: [ 48.282043] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10616a [ 48.282953] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 48.283877] page_type: f5(slab) [ 48.284393] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 48.285406] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 48.286441] page dumped because: kasan: bad access detected [ 48.287259] [ 48.287584] Memory state around the buggy address: [ 48.288323] fff00000c616ac00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 48.289436] fff00000c616ac80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 48.290385] >fff00000c616ad00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 48.290806] ^ [ 48.291047] fff00000c616ad80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 48.291972] fff00000c616ae00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 48.292730] ==================================================================
[ 25.479808] ================================================================== [ 25.480854] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a4/0x360 [ 25.481746] Write of size 33 at addr ffff888101a9ef00 by task kunit_try_catch/194 [ 25.482552] [ 25.482725] CPU: 1 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 25.483538] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.484066] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.485380] Call Trace: [ 25.485680] <TASK> [ 25.486196] dump_stack_lvl+0x73/0xb0 [ 25.486649] print_report+0xd1/0x640 [ 25.487185] ? __virt_addr_valid+0x1db/0x2d0 [ 25.487547] ? kasan_complete_mode_report_info+0x64/0x200 [ 25.488279] kasan_report+0x102/0x140 [ 25.488678] ? kmalloc_uaf_memset+0x1a4/0x360 [ 25.489373] ? kmalloc_uaf_memset+0x1a4/0x360 [ 25.489743] kasan_check_range+0x10c/0x1c0 [ 25.490252] __asan_memset+0x27/0x50 [ 25.490705] kmalloc_uaf_memset+0x1a4/0x360 [ 25.491259] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 25.491677] ? __schedule+0xc3e/0x2790 [ 25.492214] ? __pfx_read_tsc+0x10/0x10 [ 25.492653] ? ktime_get_ts64+0x84/0x230 [ 25.493183] kunit_try_run_case+0x1b3/0x490 [ 25.493644] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.494192] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 25.494837] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.495358] ? __kthread_parkme+0x82/0x160 [ 25.495907] ? preempt_count_sub+0x50/0x80 [ 25.496332] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.496942] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.497526] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.498173] kthread+0x257/0x310 [ 25.498598] ? __pfx_kthread+0x10/0x10 [ 25.498891] ret_from_fork+0x41/0x80 [ 25.499398] ? __pfx_kthread+0x10/0x10 [ 25.499800] ret_from_fork_asm+0x1a/0x30 [ 25.500365] </TASK> [ 25.500664] [ 25.500923] Allocated by task 194: [ 25.501307] kasan_save_stack+0x3d/0x60 [ 25.501734] kasan_save_track+0x18/0x40 [ 25.502339] kasan_save_alloc_info+0x3b/0x50 [ 25.502713] __kasan_kmalloc+0xb7/0xc0 [ 25.503219] __kmalloc_cache_noprof+0x184/0x410 [ 25.503660] kmalloc_uaf_memset+0xaa/0x360 [ 25.504259] kunit_try_run_case+0x1b3/0x490 [ 25.504770] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.505395] kthread+0x257/0x310 [ 25.505864] ret_from_fork+0x41/0x80 [ 25.506235] ret_from_fork_asm+0x1a/0x30 [ 25.506813] [ 25.507161] Freed by task 194: [ 25.507432] kasan_save_stack+0x3d/0x60 [ 25.508061] kasan_save_track+0x18/0x40 [ 25.508527] kasan_save_free_info+0x3f/0x60 [ 25.508892] __kasan_slab_free+0x56/0x70 [ 25.509494] kfree+0x123/0x3f0 [ 25.509776] kmalloc_uaf_memset+0x12c/0x360 [ 25.510363] kunit_try_run_case+0x1b3/0x490 [ 25.510799] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.511375] kthread+0x257/0x310 [ 25.511796] ret_from_fork+0x41/0x80 [ 25.512218] ret_from_fork_asm+0x1a/0x30 [ 25.512780] [ 25.513069] The buggy address belongs to the object at ffff888101a9ef00 [ 25.513069] which belongs to the cache kmalloc-64 of size 64 [ 25.514082] The buggy address is located 0 bytes inside of [ 25.514082] freed 64-byte region [ffff888101a9ef00, ffff888101a9ef40) [ 25.515266] [ 25.515453] The buggy address belongs to the physical page: [ 25.516001] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101a9e [ 25.516801] flags: 0x200000000000000(node=0|zone=2) [ 25.517404] page_type: f5(slab) [ 25.517670] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 25.518601] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 25.519513] page dumped because: kasan: bad access detected [ 25.519952] [ 25.520261] Memory state around the buggy address: [ 25.520826] ffff888101a9ee00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 25.521584] ffff888101a9ee80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 25.522212] >ffff888101a9ef00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 25.522951] ^ [ 25.523401] ffff888101a9ef80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.524111] ffff888101a9f000: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.524722] ==================================================================