Date
Nov. 28, 2024, 2:36 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.749770] ================================================================== [ 33.750506] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 33.751314] Read of size 1 at addr fff00000c4081c10 by task kunit_try_catch/247 [ 33.751677] [ 33.751847] CPU: 1 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 33.752895] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.754619] Hardware name: linux,dummy-virt (DT) [ 33.755373] Call trace: [ 33.755865] show_stack+0x20/0x38 (C) [ 33.756550] dump_stack_lvl+0x8c/0xd0 [ 33.757335] print_report+0x118/0x5e0 [ 33.757940] kasan_report+0xc8/0x118 [ 33.758511] __asan_report_load1_noabort+0x20/0x30 [ 33.759225] strnlen+0x80/0x88 [ 33.759777] kasan_strings+0x380/0x8f8 [ 33.760419] kunit_try_run_case+0x14c/0x3d0 [ 33.761157] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.762051] kthread+0x24c/0x2d0 [ 33.762624] ret_from_fork+0x10/0x20 [ 33.763232] [ 33.763618] Allocated by task 247: [ 33.764083] kasan_save_stack+0x3c/0x68 [ 33.764733] kasan_save_track+0x20/0x40 [ 33.765524] kasan_save_alloc_info+0x40/0x58 [ 33.766165] __kasan_kmalloc+0xd4/0xd8 [ 33.766734] __kmalloc_cache_noprof+0x15c/0x3c0 [ 33.767395] kasan_strings+0xb4/0x8f8 [ 33.767958] kunit_try_run_case+0x14c/0x3d0 [ 33.768600] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.769629] kthread+0x24c/0x2d0 [ 33.770046] ret_from_fork+0x10/0x20 [ 33.770486] [ 33.770722] Freed by task 247: [ 33.771079] kasan_save_stack+0x3c/0x68 [ 33.771676] kasan_save_track+0x20/0x40 [ 33.772491] kasan_save_free_info+0x4c/0x78 [ 33.773690] __kasan_slab_free+0x6c/0x98 [ 33.774405] kfree+0x114/0x3c8 [ 33.774919] kasan_strings+0x128/0x8f8 [ 33.775512] kunit_try_run_case+0x14c/0x3d0 [ 33.776221] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.776936] kthread+0x24c/0x2d0 [ 33.777721] ret_from_fork+0x10/0x20 [ 33.778212] [ 33.778565] The buggy address belongs to the object at fff00000c4081c00 [ 33.778565] which belongs to the cache kmalloc-32 of size 32 [ 33.779796] The buggy address is located 16 bytes inside of [ 33.779796] freed 32-byte region [fff00000c4081c00, fff00000c4081c20) [ 33.781320] [ 33.781663] The buggy address belongs to the physical page: [ 33.782417] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104081 [ 33.783303] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.784036] page_type: f5(slab) [ 33.784579] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.785740] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 33.786598] page dumped because: kasan: bad access detected [ 33.787240] [ 33.787654] Memory state around the buggy address: [ 33.788266] fff00000c4081b00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.789263] fff00000c4081b80: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 33.789975] >fff00000c4081c00: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 33.790831] ^ [ 33.791383] fff00000c4081c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.792386] fff00000c4081d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.793338] ==================================================================
[ 24.683496] ================================================================== [ 24.684559] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 24.685231] Read of size 1 at addr ffff888102a34190 by task kunit_try_catch/267 [ 24.686609] [ 24.687032] CPU: 0 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 24.687918] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.688457] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.689400] Call Trace: [ 24.689786] <TASK> [ 24.690092] dump_stack_lvl+0x73/0xb0 [ 24.690727] print_report+0xd1/0x640 [ 24.691195] ? __virt_addr_valid+0x1db/0x2d0 [ 24.691784] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.692409] kasan_report+0x102/0x140 [ 24.692986] ? strnlen+0x73/0x80 [ 24.693448] ? strnlen+0x73/0x80 [ 24.694022] __asan_report_load1_noabort+0x18/0x20 [ 24.694537] strnlen+0x73/0x80 [ 24.695098] kasan_strings+0x4cc/0xb60 [ 24.695525] ? __pfx_kasan_strings+0x10/0x10 [ 24.696304] ? __schedule+0xc3e/0x2790 [ 24.696646] ? __pfx_read_tsc+0x10/0x10 [ 24.697127] ? ktime_get_ts64+0x84/0x230 [ 24.697692] kunit_try_run_case+0x1b3/0x490 [ 24.698097] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.699234] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 24.699623] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.701176] ? __kthread_parkme+0x82/0x160 [ 24.701696] ? preempt_count_sub+0x50/0x80 [ 24.702302] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.702793] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.703434] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.704126] kthread+0x257/0x310 [ 24.704511] ? __pfx_kthread+0x10/0x10 [ 24.705026] ret_from_fork+0x41/0x80 [ 24.705517] ? __pfx_kthread+0x10/0x10 [ 24.705984] ret_from_fork_asm+0x1a/0x30 [ 24.706572] </TASK> [ 24.706928] [ 24.707276] Allocated by task 267: [ 24.707597] kasan_save_stack+0x3d/0x60 [ 24.708153] kasan_save_track+0x18/0x40 [ 24.708537] kasan_save_alloc_info+0x3b/0x50 [ 24.709113] __kasan_kmalloc+0xb7/0xc0 [ 24.709617] __kmalloc_cache_noprof+0x184/0x410 [ 24.710276] kasan_strings+0xb3/0xb60 [ 24.710752] kunit_try_run_case+0x1b3/0x490 [ 24.711101] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.711713] kthread+0x257/0x310 [ 24.712043] ret_from_fork+0x41/0x80 [ 24.712306] ret_from_fork_asm+0x1a/0x30 [ 24.713606] [ 24.713860] Freed by task 267: [ 24.715273] kasan_save_stack+0x3d/0x60 [ 24.715568] kasan_save_track+0x18/0x40 [ 24.716490] kasan_save_free_info+0x3f/0x60 [ 24.716766] __kasan_slab_free+0x56/0x70 [ 24.717022] kfree+0x123/0x3f0 [ 24.717234] kasan_strings+0x13a/0xb60 [ 24.717521] kunit_try_run_case+0x1b3/0x490 [ 24.717822] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.718153] kthread+0x257/0x310 [ 24.719449] ret_from_fork+0x41/0x80 [ 24.719882] ret_from_fork_asm+0x1a/0x30 [ 24.720441] [ 24.720715] The buggy address belongs to the object at ffff888102a34180 [ 24.720715] which belongs to the cache kmalloc-32 of size 32 [ 24.722134] The buggy address is located 16 bytes inside of [ 24.722134] freed 32-byte region [ffff888102a34180, ffff888102a341a0) [ 24.722883] [ 24.723038] The buggy address belongs to the physical page: [ 24.723432] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a34 [ 24.724495] flags: 0x200000000000000(node=0|zone=2) [ 24.725136] page_type: f5(slab) [ 24.725595] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 24.726462] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 24.727231] page dumped because: kasan: bad access detected [ 24.727573] [ 24.727723] Memory state around the buggy address: [ 24.728018] ffff888102a34080: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 24.728583] ffff888102a34100: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 24.729663] >ffff888102a34180: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 24.730494] ^ [ 24.730894] ffff888102a34200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.731638] ffff888102a34280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.732035] ==================================================================