Date
July 24, 2025, 4:41 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 32.589493] ================================================================== [ 32.589635] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 32.589722] Read of size 18446744073709551614 at addr fff00000c9a87784 by task kunit_try_catch/211 [ 32.589978] [ 32.590035] CPU: 0 UID: 0 PID: 211 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250724 #1 PREEMPT [ 32.590494] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.590540] Hardware name: linux,dummy-virt (DT) [ 32.590573] Call trace: [ 32.590616] show_stack+0x20/0x38 (C) [ 32.590679] dump_stack_lvl+0x8c/0xd0 [ 32.590777] print_report+0x118/0x5e8 [ 32.590842] kasan_report+0xdc/0x128 [ 32.590886] kasan_check_range+0x100/0x1a8 [ 32.591113] __asan_memmove+0x3c/0x98 [ 32.591167] kmalloc_memmove_negative_size+0x154/0x2e0 [ 32.591501] kunit_try_run_case+0x170/0x3f0 [ 32.591571] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.591802] kthread+0x328/0x630 [ 32.591881] ret_from_fork+0x10/0x20 [ 32.592026] [ 32.592103] Allocated by task 211: [ 32.592137] kasan_save_stack+0x3c/0x68 [ 32.592445] kasan_save_track+0x20/0x40 [ 32.592530] kasan_save_alloc_info+0x40/0x58 [ 32.592690] __kasan_kmalloc+0xd4/0xd8 [ 32.592811] __kmalloc_cache_noprof+0x16c/0x3c0 [ 32.593115] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 32.593238] kunit_try_run_case+0x170/0x3f0 [ 32.593322] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.593580] kthread+0x328/0x630 [ 32.593829] ret_from_fork+0x10/0x20 [ 32.593894] [ 32.593943] The buggy address belongs to the object at fff00000c9a87780 [ 32.593943] which belongs to the cache kmalloc-64 of size 64 [ 32.594494] The buggy address is located 4 bytes inside of [ 32.594494] 64-byte region [fff00000c9a87780, fff00000c9a877c0) [ 32.594587] [ 32.594638] The buggy address belongs to the physical page: [ 32.594725] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109a87 [ 32.594821] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 32.595088] page_type: f5(slab) [ 32.595269] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 32.595408] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 32.595610] page dumped because: kasan: bad access detected [ 32.595685] [ 32.595704] Memory state around the buggy address: [ 32.595755] fff00000c9a87680: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 32.595960] fff00000c9a87700: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 32.596191] >fff00000c9a87780: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 32.596347] ^ [ 32.596391] fff00000c9a87800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.596454] fff00000c9a87880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.596572] ==================================================================
[ 27.041219] ================================================================== [ 27.041687] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 27.042337] Read of size 18446744073709551614 at addr ffff88810545ee04 by task kunit_try_catch/228 [ 27.043105] [ 27.043227] CPU: 0 UID: 0 PID: 228 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250724 #1 PREEMPT(voluntary) [ 27.043292] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 27.043305] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.043328] Call Trace: [ 27.043341] <TASK> [ 27.043362] dump_stack_lvl+0x73/0xb0 [ 27.043399] print_report+0xd1/0x640 [ 27.043425] ? __virt_addr_valid+0x1db/0x2d0 [ 27.043451] ? kmalloc_memmove_negative_size+0x171/0x330 [ 27.043699] ? kasan_complete_mode_report_info+0x2a/0x200 [ 27.043726] ? kmalloc_memmove_negative_size+0x171/0x330 [ 27.043776] kasan_report+0x141/0x180 [ 27.043879] ? kmalloc_memmove_negative_size+0x171/0x330 [ 27.043909] kasan_check_range+0x10c/0x1c0 [ 27.043933] __asan_memmove+0x27/0x70 [ 27.043956] kmalloc_memmove_negative_size+0x171/0x330 [ 27.043981] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 27.044006] ? __schedule+0x10da/0x2b60 [ 27.044032] ? __pfx_read_tsc+0x10/0x10 [ 27.044053] ? ktime_get_ts64+0x86/0x230 [ 27.044078] kunit_try_run_case+0x1a5/0x480 [ 27.044103] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.044125] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.044149] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.044174] ? __kthread_parkme+0x82/0x180 [ 27.044195] ? preempt_count_sub+0x50/0x80 [ 27.044218] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.044241] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.044263] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.044286] kthread+0x337/0x6f0 [ 27.044306] ? trace_preempt_on+0x20/0xc0 [ 27.044329] ? __pfx_kthread+0x10/0x10 [ 27.044349] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.044372] ? calculate_sigpending+0x7b/0xa0 [ 27.044396] ? __pfx_kthread+0x10/0x10 [ 27.044417] ret_from_fork+0x116/0x1d0 [ 27.044436] ? __pfx_kthread+0x10/0x10 [ 27.044456] ret_from_fork_asm+0x1a/0x30 [ 27.044488] </TASK> [ 27.044500] [ 27.054595] Allocated by task 228: [ 27.055077] kasan_save_stack+0x45/0x70 [ 27.055298] kasan_save_track+0x18/0x40 [ 27.055481] kasan_save_alloc_info+0x3b/0x50 [ 27.055683] __kasan_kmalloc+0xb7/0xc0 [ 27.056133] __kmalloc_cache_noprof+0x189/0x420 [ 27.056361] kmalloc_memmove_negative_size+0xac/0x330 [ 27.056653] kunit_try_run_case+0x1a5/0x480 [ 27.056821] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.057296] kthread+0x337/0x6f0 [ 27.057446] ret_from_fork+0x116/0x1d0 [ 27.057637] ret_from_fork_asm+0x1a/0x30 [ 27.057807] [ 27.057902] The buggy address belongs to the object at ffff88810545ee00 [ 27.057902] which belongs to the cache kmalloc-64 of size 64 [ 27.058361] The buggy address is located 4 bytes inside of [ 27.058361] 64-byte region [ffff88810545ee00, ffff88810545ee40) [ 27.058787] [ 27.058880] The buggy address belongs to the physical page: [ 27.059149] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10545e [ 27.060131] flags: 0x200000000000000(node=0|zone=2) [ 27.060434] page_type: f5(slab) [ 27.060586] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 27.060987] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 27.061542] page dumped because: kasan: bad access detected [ 27.061777] [ 27.062007] Memory state around the buggy address: [ 27.062331] ffff88810545ed00: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 27.062723] ffff88810545ed80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 27.063259] >ffff88810545ee00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 27.063506] ^ [ 27.064017] ffff88810545ee80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.064437] ffff88810545ef00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.064693] ==================================================================