Date
Nov. 22, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 37.178262] ================================================================== [ 37.179337] BUG: KASAN: slab-use-after-free in strchr+0xcc/0xd8 [ 37.180427] Read of size 1 at addr fff00000c6a4c550 by task kunit_try_catch/248 [ 37.182230] [ 37.182578] CPU: 1 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 37.183959] Tainted: [B]=BAD_PAGE, [N]=TEST [ 37.184626] Hardware name: linux,dummy-virt (DT) [ 37.185626] Call trace: [ 37.186090] show_stack+0x20/0x38 (C) [ 37.186743] dump_stack_lvl+0x8c/0xd0 [ 37.187918] print_report+0x118/0x5e0 [ 37.188802] kasan_report+0xc8/0x118 [ 37.189693] __asan_report_load1_noabort+0x20/0x30 [ 37.190736] strchr+0xcc/0xd8 [ 37.191744] kasan_strings+0x180/0x8f8 [ 37.192797] kunit_try_run_case+0x14c/0x3d0 [ 37.193631] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.194744] kthread+0x24c/0x2d0 [ 37.195341] ret_from_fork+0x10/0x20 [ 37.195915] [ 37.196241] Allocated by task 248: [ 37.197717] kasan_save_stack+0x3c/0x68 [ 37.199021] kasan_save_track+0x20/0x40 [ 37.199683] kasan_save_alloc_info+0x40/0x58 [ 37.200314] __kasan_kmalloc+0xd4/0xd8 [ 37.201584] __kmalloc_cache_noprof+0x15c/0x3c8 [ 37.202503] kasan_strings+0xb4/0x8f8 [ 37.203205] kunit_try_run_case+0x14c/0x3d0 [ 37.203983] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.205397] kthread+0x24c/0x2d0 [ 37.206610] ret_from_fork+0x10/0x20 [ 37.207629] [ 37.207924] Freed by task 248: [ 37.208588] kasan_save_stack+0x3c/0x68 [ 37.210186] kasan_save_track+0x20/0x40 [ 37.210803] kasan_save_free_info+0x4c/0x78 [ 37.211841] __kasan_slab_free+0x6c/0x98 [ 37.212334] kfree+0x114/0x3d0 [ 37.213293] kasan_strings+0x128/0x8f8 [ 37.213848] kunit_try_run_case+0x14c/0x3d0 [ 37.214562] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.216010] kthread+0x24c/0x2d0 [ 37.217026] ret_from_fork+0x10/0x20 [ 37.217666] [ 37.218215] The buggy address belongs to the object at fff00000c6a4c540 [ 37.218215] which belongs to the cache kmalloc-32 of size 32 [ 37.220006] The buggy address is located 16 bytes inside of [ 37.220006] freed 32-byte region [fff00000c6a4c540, fff00000c6a4c560) [ 37.222309] [ 37.222763] The buggy address belongs to the physical page: [ 37.223489] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106a4c [ 37.224408] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 37.225986] page_type: f5(slab) [ 37.226625] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 37.227565] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 37.228859] page dumped because: kasan: bad access detected [ 37.230024] [ 37.230293] Memory state around the buggy address: [ 37.230918] fff00000c6a4c400: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 37.233098] fff00000c6a4c480: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 37.234110] >fff00000c6a4c500: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 37.235128] ^ [ 37.235880] fff00000c6a4c580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.237210] fff00000c6a4c600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.237893] ==================================================================
[ 28.101092] ================================================================== [ 28.102051] BUG: KASAN: slab-use-after-free in strchr+0x9c/0xc0 [ 28.103006] Read of size 1 at addr ffff888102a18a90 by task kunit_try_catch/267 [ 28.103721] [ 28.104174] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 28.105230] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.105542] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.106981] Call Trace: [ 28.107415] <TASK> [ 28.107987] dump_stack_lvl+0x73/0xb0 [ 28.108560] print_report+0xd1/0x640 [ 28.109191] ? __virt_addr_valid+0x1db/0x2d0 [ 28.109669] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.110442] kasan_report+0x102/0x140 [ 28.110889] ? strchr+0x9c/0xc0 [ 28.111608] ? strchr+0x9c/0xc0 [ 28.111910] __asan_report_load1_noabort+0x18/0x20 [ 28.112513] strchr+0x9c/0xc0 [ 28.113713] kasan_strings+0x1b1/0xb60 [ 28.114106] ? __pfx_kasan_strings+0x10/0x10 [ 28.115097] ? __schedule+0xc3e/0x2790 [ 28.115551] ? __pfx_read_tsc+0x10/0x10 [ 28.116269] ? ktime_get_ts64+0x84/0x230 [ 28.117295] kunit_try_run_case+0x1b3/0x490 [ 28.117665] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.118237] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.118742] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.119103] ? __kthread_parkme+0x82/0x160 [ 28.119694] ? preempt_count_sub+0x50/0x80 [ 28.120165] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.120686] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.121768] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.122249] kthread+0x257/0x310 [ 28.122534] ? __pfx_kthread+0x10/0x10 [ 28.122968] ret_from_fork+0x41/0x80 [ 28.123332] ? __pfx_kthread+0x10/0x10 [ 28.124406] ret_from_fork_asm+0x1a/0x30 [ 28.125057] </TASK> [ 28.125447] [ 28.125841] Allocated by task 267: [ 28.126574] kasan_save_stack+0x3d/0x60 [ 28.126876] kasan_save_track+0x18/0x40 [ 28.127931] kasan_save_alloc_info+0x3b/0x50 [ 28.128771] __kasan_kmalloc+0xb7/0xc0 [ 28.129231] __kmalloc_cache_noprof+0x184/0x410 [ 28.129619] kasan_strings+0xb3/0xb60 [ 28.130378] kunit_try_run_case+0x1b3/0x490 [ 28.130666] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.131333] kthread+0x257/0x310 [ 28.132667] ret_from_fork+0x41/0x80 [ 28.133041] ret_from_fork_asm+0x1a/0x30 [ 28.133207] [ 28.133336] Freed by task 267: [ 28.133668] kasan_save_stack+0x3d/0x60 [ 28.134201] kasan_save_track+0x18/0x40 [ 28.134809] kasan_save_free_info+0x3f/0x60 [ 28.135352] __kasan_slab_free+0x56/0x70 [ 28.136204] kfree+0x123/0x3f0 [ 28.136572] kasan_strings+0x13a/0xb60 [ 28.137082] kunit_try_run_case+0x1b3/0x490 [ 28.137853] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.138492] kthread+0x257/0x310 [ 28.139098] ret_from_fork+0x41/0x80 [ 28.139530] ret_from_fork_asm+0x1a/0x30 [ 28.140209] [ 28.140462] The buggy address belongs to the object at ffff888102a18a80 [ 28.140462] which belongs to the cache kmalloc-32 of size 32 [ 28.141397] The buggy address is located 16 bytes inside of [ 28.141397] freed 32-byte region [ffff888102a18a80, ffff888102a18aa0) [ 28.142295] [ 28.142510] The buggy address belongs to the physical page: [ 28.143638] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a18 [ 28.144408] flags: 0x200000000000000(node=0|zone=2) [ 28.144773] page_type: f5(slab) [ 28.145345] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.146290] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 28.147009] page dumped because: kasan: bad access detected [ 28.147608] [ 28.147845] Memory state around the buggy address: [ 28.149119] ffff888102a18980: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.149712] ffff888102a18a00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 28.150496] >ffff888102a18a80: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 28.151319] ^ [ 28.151593] ffff888102a18b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.152492] ffff888102a18b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.153510] ==================================================================