Date
May 15, 2025, 10:38 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.110273] ================================================================== [ 18.110714] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 18.110822] Read of size 18446744073709551614 at addr fff00000c6879804 by task kunit_try_catch/180 [ 18.111228] [ 18.111417] CPU: 1 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250515 #1 PREEMPT [ 18.111619] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.111809] Hardware name: linux,dummy-virt (DT) [ 18.111862] Call trace: [ 18.111886] show_stack+0x20/0x38 (C) [ 18.111995] dump_stack_lvl+0x8c/0xd0 [ 18.112485] print_report+0x118/0x608 [ 18.113784] kasan_report+0xdc/0x128 [ 18.114042] kasan_check_range+0x100/0x1a8 [ 18.114294] __asan_memmove+0x3c/0x98 [ 18.114343] kmalloc_memmove_negative_size+0x154/0x2e0 [ 18.114399] kunit_try_run_case+0x170/0x3f0 [ 18.114676] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.115082] kthread+0x328/0x630 [ 18.115561] ret_from_fork+0x10/0x20 [ 18.115927] [ 18.116190] Allocated by task 180: [ 18.116235] kasan_save_stack+0x3c/0x68 [ 18.116361] kasan_save_track+0x20/0x40 [ 18.116505] kasan_save_alloc_info+0x40/0x58 [ 18.116831] __kasan_kmalloc+0xd4/0xd8 [ 18.116959] __kmalloc_cache_noprof+0x15c/0x3c0 [ 18.117048] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 18.117338] kunit_try_run_case+0x170/0x3f0 [ 18.117552] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.117617] kthread+0x328/0x630 [ 18.117820] ret_from_fork+0x10/0x20 [ 18.117868] [ 18.118002] The buggy address belongs to the object at fff00000c6879800 [ 18.118002] which belongs to the cache kmalloc-64 of size 64 [ 18.118546] The buggy address is located 4 bytes inside of [ 18.118546] 64-byte region [fff00000c6879800, fff00000c6879840) [ 18.118625] [ 18.118864] The buggy address belongs to the physical page: [ 18.119037] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106879 [ 18.119316] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.119416] page_type: f5(slab) [ 18.119590] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 18.119712] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 18.119756] page dumped because: kasan: bad access detected [ 18.119999] [ 18.120068] Memory state around the buggy address: [ 18.120264] fff00000c6879700: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 18.120415] fff00000c6879780: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.120710] >fff00000c6879800: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 18.120816] ^ [ 18.120885] fff00000c6879880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.120930] fff00000c6879900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.120979] ==================================================================
[ 14.279087] ================================================================== [ 14.279653] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 14.280200] Read of size 18446744073709551614 at addr ffff88810230b084 by task kunit_try_catch/198 [ 14.280546] [ 14.280686] CPU: 1 UID: 0 PID: 198 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250515 #1 PREEMPT(voluntary) [ 14.280774] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.280789] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.280810] Call Trace: [ 14.280825] <TASK> [ 14.280845] dump_stack_lvl+0x73/0xb0 [ 14.280876] print_report+0xd1/0x650 [ 14.280902] ? __virt_addr_valid+0x1db/0x2d0 [ 14.280938] ? kmalloc_memmove_negative_size+0x171/0x330 [ 14.280969] ? kasan_complete_mode_report_info+0x2a/0x200 [ 14.280989] ? kmalloc_memmove_negative_size+0x171/0x330 [ 14.281037] kasan_report+0x141/0x180 [ 14.281059] ? kmalloc_memmove_negative_size+0x171/0x330 [ 14.281086] kasan_check_range+0x10c/0x1c0 [ 14.281107] __asan_memmove+0x27/0x70 [ 14.281126] kmalloc_memmove_negative_size+0x171/0x330 [ 14.281148] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 14.281171] ? __schedule+0x10cc/0x2b60 [ 14.281192] ? __pfx_read_tsc+0x10/0x10 [ 14.281212] ? ktime_get_ts64+0x86/0x230 [ 14.281522] kunit_try_run_case+0x1a5/0x480 [ 14.281573] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.281609] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.281653] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.281695] ? __kthread_parkme+0x82/0x180 [ 14.281738] ? preempt_count_sub+0x50/0x80 [ 14.281787] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.281833] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.281878] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.281921] kthread+0x337/0x6f0 [ 14.281960] ? trace_preempt_on+0x20/0xc0 [ 14.282006] ? __pfx_kthread+0x10/0x10 [ 14.282046] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.282087] ? calculate_sigpending+0x7b/0xa0 [ 14.282120] ? __pfx_kthread+0x10/0x10 [ 14.282184] ret_from_fork+0x116/0x1d0 [ 14.282212] ? __pfx_kthread+0x10/0x10 [ 14.282245] ret_from_fork_asm+0x1a/0x30 [ 14.282277] </TASK> [ 14.282289] [ 14.292037] Allocated by task 198: [ 14.292443] kasan_save_stack+0x45/0x70 [ 14.292651] kasan_save_track+0x18/0x40 [ 14.292822] kasan_save_alloc_info+0x3b/0x50 [ 14.292997] __kasan_kmalloc+0xb7/0xc0 [ 14.293161] __kmalloc_cache_noprof+0x189/0x420 [ 14.293355] kmalloc_memmove_negative_size+0xac/0x330 [ 14.294037] kunit_try_run_case+0x1a5/0x480 [ 14.294405] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.295048] kthread+0x337/0x6f0 [ 14.295436] ret_from_fork+0x116/0x1d0 [ 14.295950] ret_from_fork_asm+0x1a/0x30 [ 14.296423] [ 14.296777] The buggy address belongs to the object at ffff88810230b080 [ 14.296777] which belongs to the cache kmalloc-64 of size 64 [ 14.297362] The buggy address is located 4 bytes inside of [ 14.297362] 64-byte region [ffff88810230b080, ffff88810230b0c0) [ 14.297991] [ 14.298154] The buggy address belongs to the physical page: [ 14.298559] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10230b [ 14.299060] flags: 0x200000000000000(node=0|zone=2) [ 14.299519] page_type: f5(slab) [ 14.299887] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 14.300163] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 14.300417] page dumped because: kasan: bad access detected [ 14.300619] [ 14.300720] Memory state around the buggy address: [ 14.301219] ffff88810230af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.301960] ffff88810230b000: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 14.302589] >ffff88810230b080: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 14.302822] ^ [ 14.303040] ffff88810230b100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.303775] ffff88810230b180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.304306] ==================================================================