Date
Nov. 28, 2024, 2:36 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.563934] ================================================================== [ 33.564637] BUG: KASAN: slab-use-after-free in strrchr+0x6c/0x78 [ 33.565694] Read of size 1 at addr fff00000c4081c10 by task kunit_try_catch/247 [ 33.566698] [ 33.567372] CPU: 1 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 33.568764] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.569591] Hardware name: linux,dummy-virt (DT) [ 33.570306] Call trace: [ 33.570735] show_stack+0x20/0x38 (C) [ 33.571271] dump_stack_lvl+0x8c/0xd0 [ 33.571910] print_report+0x118/0x5e0 [ 33.572506] kasan_report+0xc8/0x118 [ 33.573359] __asan_report_load1_noabort+0x20/0x30 [ 33.574029] strrchr+0x6c/0x78 [ 33.574613] kasan_strings+0x1e0/0x8f8 [ 33.575234] kunit_try_run_case+0x14c/0x3d0 [ 33.575919] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.576679] kthread+0x24c/0x2d0 [ 33.577410] ret_from_fork+0x10/0x20 [ 33.577971] [ 33.578340] Allocated by task 247: [ 33.578870] kasan_save_stack+0x3c/0x68 [ 33.579469] kasan_save_track+0x20/0x40 [ 33.580046] kasan_save_alloc_info+0x40/0x58 [ 33.580749] __kasan_kmalloc+0xd4/0xd8 [ 33.582128] __kmalloc_cache_noprof+0x15c/0x3c0 [ 33.582749] kasan_strings+0xb4/0x8f8 [ 33.583353] kunit_try_run_case+0x14c/0x3d0 [ 33.583916] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.584694] kthread+0x24c/0x2d0 [ 33.585543] ret_from_fork+0x10/0x20 [ 33.586104] [ 33.586463] Freed by task 247: [ 33.586909] kasan_save_stack+0x3c/0x68 [ 33.587448] kasan_save_track+0x20/0x40 [ 33.587951] kasan_save_free_info+0x4c/0x78 [ 33.588638] __kasan_slab_free+0x6c/0x98 [ 33.589267] kfree+0x114/0x3c8 [ 33.590151] kasan_strings+0x128/0x8f8 [ 33.590737] kunit_try_run_case+0x14c/0x3d0 [ 33.591367] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.592149] kthread+0x24c/0x2d0 [ 33.592646] ret_from_fork+0x10/0x20 [ 33.593530] [ 33.593914] The buggy address belongs to the object at fff00000c4081c00 [ 33.593914] which belongs to the cache kmalloc-32 of size 32 [ 33.595130] The buggy address is located 16 bytes inside of [ 33.595130] freed 32-byte region [fff00000c4081c00, fff00000c4081c20) [ 33.596293] [ 33.596640] The buggy address belongs to the physical page: [ 33.597696] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104081 [ 33.598556] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.599426] page_type: f5(slab) [ 33.599954] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.600831] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 33.602438] page dumped because: kasan: bad access detected [ 33.603151] [ 33.603533] Memory state around the buggy address: [ 33.604210] fff00000c4081b00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.605015] fff00000c4081b80: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 33.605873] >fff00000c4081c00: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 33.606858] ^ [ 33.607319] fff00000c4081c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.607997] fff00000c4081d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.608846] ==================================================================
[ 24.505992] ================================================================== [ 24.506734] BUG: KASAN: slab-use-after-free in strrchr+0x64/0x70 [ 24.507704] Read of size 1 at addr ffff888102a34190 by task kunit_try_catch/267 [ 24.508328] [ 24.508622] CPU: 0 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 24.509805] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.510404] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.511312] Call Trace: [ 24.511582] <TASK> [ 24.511776] dump_stack_lvl+0x73/0xb0 [ 24.512067] print_report+0xd1/0x640 [ 24.512493] ? __virt_addr_valid+0x1db/0x2d0 [ 24.513041] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.513869] kasan_report+0x102/0x140 [ 24.515015] ? strrchr+0x64/0x70 [ 24.515415] ? strrchr+0x64/0x70 [ 24.515874] __asan_report_load1_noabort+0x18/0x20 [ 24.516388] strrchr+0x64/0x70 [ 24.516733] kasan_strings+0x24c/0xb60 [ 24.517111] ? __pfx_kasan_strings+0x10/0x10 [ 24.517639] ? __schedule+0xc3e/0x2790 [ 24.518020] ? __pfx_read_tsc+0x10/0x10 [ 24.518468] ? ktime_get_ts64+0x84/0x230 [ 24.518952] kunit_try_run_case+0x1b3/0x490 [ 24.519453] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.519863] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 24.520378] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.520841] ? __kthread_parkme+0x82/0x160 [ 24.521392] ? preempt_count_sub+0x50/0x80 [ 24.521837] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.522275] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.522908] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.523331] kthread+0x257/0x310 [ 24.523785] ? __pfx_kthread+0x10/0x10 [ 24.524364] ret_from_fork+0x41/0x80 [ 24.524840] ? __pfx_kthread+0x10/0x10 [ 24.525257] ret_from_fork_asm+0x1a/0x30 [ 24.525618] </TASK> [ 24.525937] [ 24.526188] Allocated by task 267: [ 24.526617] kasan_save_stack+0x3d/0x60 [ 24.527097] kasan_save_track+0x18/0x40 [ 24.527530] kasan_save_alloc_info+0x3b/0x50 [ 24.527837] __kasan_kmalloc+0xb7/0xc0 [ 24.528399] __kmalloc_cache_noprof+0x184/0x410 [ 24.528931] kasan_strings+0xb3/0xb60 [ 24.529448] kunit_try_run_case+0x1b3/0x490 [ 24.529866] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.530378] kthread+0x257/0x310 [ 24.530643] ret_from_fork+0x41/0x80 [ 24.531128] ret_from_fork_asm+0x1a/0x30 [ 24.531627] [ 24.531843] Freed by task 267: [ 24.532133] kasan_save_stack+0x3d/0x60 [ 24.532424] kasan_save_track+0x18/0x40 [ 24.532854] kasan_save_free_info+0x3f/0x60 [ 24.533457] __kasan_slab_free+0x56/0x70 [ 24.533960] kfree+0x123/0x3f0 [ 24.534363] kasan_strings+0x13a/0xb60 [ 24.534636] kunit_try_run_case+0x1b3/0x490 [ 24.534934] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.535573] kthread+0x257/0x310 [ 24.535967] ret_from_fork+0x41/0x80 [ 24.536468] ret_from_fork_asm+0x1a/0x30 [ 24.536796] [ 24.537045] The buggy address belongs to the object at ffff888102a34180 [ 24.537045] which belongs to the cache kmalloc-32 of size 32 [ 24.538037] The buggy address is located 16 bytes inside of [ 24.538037] freed 32-byte region [ffff888102a34180, ffff888102a341a0) [ 24.538792] [ 24.538953] The buggy address belongs to the physical page: [ 24.539555] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a34 [ 24.540357] flags: 0x200000000000000(node=0|zone=2) [ 24.540678] page_type: f5(slab) [ 24.540930] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 24.541561] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 24.542437] page dumped because: kasan: bad access detected [ 24.543037] [ 24.543299] Memory state around the buggy address: [ 24.543855] ffff888102a34080: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 24.544657] ffff888102a34100: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 24.545269] >ffff888102a34180: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 24.545888] ^ [ 24.546202] ffff888102a34200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.546625] ffff888102a34280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.547413] ==================================================================