[ 77.424175] BUG: Bad rss-counter state mm:00000000242e947b type:MM_FILEPAGES val:33 [ 77.425376] BUG: Bad rss-counter state mm:00000000242e947b type:MM_ANONPAGES val:22 [ 77.564097] ================================================================== [ 77.565186] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 77.566464] Read of size 8 at addr ffff88800c552b38 by task sshd/220 [ 77.567386] [ 77.567648] CPU: 1 PID: 220 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 77.568876] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 77.569973] Call Trace: [ 77.570293] [ 77.570577] dump_stack_lvl+0x91/0xf0 [ 77.571064] print_report+0xcc/0x620 [ 77.571569] ? __virt_addr_valid+0x102/0x340 [ 77.572118] ? vma_interval_tree_remove+0xc75/0xec0 [ 77.572732] ? vma_interval_tree_remove+0xc75/0xec0 [ 77.573345] kasan_report+0xbe/0xf0 [ 77.573825] ? vma_interval_tree_remove+0xc75/0xec0 [ 77.574444] vma_interval_tree_remove+0xc75/0xec0 [ 77.575043] vma_prepare+0xc54/0x11a0 [ 77.575533] __split_vma+0x5af/0x950 [ 77.576004] ? __pfx___split_vma+0x10/0x10 [ 77.576531] ? find_held_lock+0x2c/0x110 [ 77.577052] do_vmi_align_munmap+0x2ba/0x11f0 [ 77.577615] ? lock_is_held_type+0x9f/0x120 [ 77.578158] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 77.578767] ? mtree_range_walk+0x632/0x900 [ 77.579339] ? mas_walk+0x5c7/0x7c0 [ 77.579813] do_vmi_munmap+0x1f1/0x2b0 [ 77.580307] mmap_region+0x1f9/0x2660 [ 77.580787] ? vm_mmap_pgoff+0x15c/0x3a0 [ 77.581302] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 77.582011] ? __pfx_lock_acquire+0x10/0x10 [ 77.582556] ? __pfx_mmap_region+0x10/0x10 [ 77.583083] ? security_mmap_addr+0x7d/0xa0 [ 77.583617] ? get_unmapped_area+0x1f5/0x3f0 [ 77.584174] do_mmap+0x854/0xf00 [ 77.584609] vm_mmap_pgoff+0x1a6/0x3a0 [ 77.585125] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 77.585693] ksys_mmap_pgoff+0x3af/0x500 [ 77.586201] do_syscall_64+0x3f/0x90 [ 77.586676] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 77.587328] RIP: 0033:0x7f15d7679d82 [ 77.587780] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00 [ 77.589891] RSP: 002b:00007ffc3f228568 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 77.590785] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f15d7679d82 [ 77.591658] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f15d6ab3000 [ 77.592496] RBP: 00007f15d6ab3000 R08: 0000000000000009 R09: 0000000000001000 [ 77.593337] R10: 0000000000000812 R11: 0000000000000206 R12: 000055dc822b2980 [ 77.594193] R13: 00007ffc3f228580 R14: 00007ffc3f2285b0 R15: 00007ffc3f228910 [ 77.595041] [ 77.595337] [ 77.595558] Allocated by task 213: [ 77.595982] kasan_save_stack+0x22/0x50 [ 77.596483] kasan_set_track+0x25/0x30 [ 77.596976] __kasan_slab_alloc+0x59/0x70 [ 77.597501] kmem_cache_alloc+0x16b/0x370 [ 77.598020] vm_area_dup+0x20/0x160 [ 77.598477] __split_vma+0x170/0x950 [ 77.598939] split_vma+0xc6/0x110 [ 77.599417] mprotect_fixup+0x8d2/0xb30 [ 77.599927] do_mprotect_pkey+0x87e/0xd40 [ 77.600448] __x64_sys_mprotect+0x78/0xc0 [ 77.600974] do_syscall_64+0x3f/0x90 [ 77.601448] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 77.602085] [ 77.602298] Freed by task 213: [ 77.602686] kasan_save_stack+0x22/0x50 [ 77.603206] kasan_set_track+0x25/0x30 [ 77.603696] kasan_save_free_info+0x2b/0x50 [ 77.604226] __kasan_slab_free+0x10a/0x190 [ 77.604770] kmem_cache_free+0x10d/0x4d0 [ 77.605286] rcu_core+0x8c8/0x2860 [ 77.605724] __do_softirq+0x1b7/0x7d4 [ 77.606200] [ 77.606419] Last potentially related work creation: [ 77.607016] kasan_save_stack+0x22/0x50 [ 77.607617] __kasan_record_aux_stack+0x8e/0xa0 [ 77.608186] __call_rcu_common.constprop.0+0x6a/0xb90 [ 77.608831] remove_vma+0x139/0x170 [ 77.609293] do_vmi_align_munmap+0xd4a/0x11f0 [ 77.609871] do_vmi_munmap+0x1f1/0x2b0 [ 77.610351] __vm_munmap+0x138/0x3a0 [ 77.610814] __x64_sys_munmap+0x59/0x80 [ 77.611314] do_syscall_64+0x3f/0x90 [ 77.611780] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 77.612425] [ 77.612642] Second to last potentially related work creation: [ 77.613324] kasan_save_stack+0x22/0x50 [ 77.613824] __kasan_record_aux_stack+0x8e/0xa0 [ 77.614392] __call_rcu_common.constprop.0+0x6a/0xb90 [ 77.615030] remove_vma+0x139/0x170 [ 77.615490] do_vmi_align_munmap+0xd4a/0x11f0 [ 77.616047] do_vmi_munmap+0x1f1/0x2b0 [ 77.616526] mmap_region+0x1f9/0x2660 [ 77.616998] do_mmap+0x854/0xf00 [ 77.617425] vm_mmap_pgoff+0x1a6/0x3a0 [ 77.617905] ksys_mmap_pgoff+0x3af/0x500 [ 77.618404] do_syscall_64+0x3f/0x90 [ 77.618873] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 77.619525] [ 77.619737] The buggy address belongs to the object at ffff88800c552ae0 [ 77.619737] which belongs to the cache vm_area_struct of size 168 [ 77.621205] The buggy address is located 88 bytes inside of [ 77.621205] freed 168-byte region [ffff88800c552ae0, ffff88800c552b88) [ 77.622586] [ 77.622799] The buggy address belongs to the physical page: [ 77.623465] page:00000000c9f7ed6d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc552 [ 77.624532] memcg:ffff888013afdb01 [ 77.624954] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 77.625640] page_type: 0xffffffff() [ 77.626083] raw: 0100000000000200 ffff88800879fc80 ffffea00005bb540 dead000000000005 [ 77.626999] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888013afdb01 [ 77.627905] page dumped because: kasan: bad access detected [ 77.628556] [ 77.628771] Memory state around the buggy address: [ 77.629348] ffff88800c552a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 77.630195] ffff88800c552a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 77.631046] >ffff88800c552b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 77.631893] ^ [ 77.632495] ffff88800c552b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 77.633336] ffff88800c552c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 77.634175] ================================================================== [ 77.635126] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 79.706880] BUG: Bad rss-counter state mm:00000000d02e1a91 type:MM_FILEPAGES val:33 [ 79.708114] BUG: Bad rss-counter state mm:00000000d02e1a91 type:MM_ANONPAGES val:22 [ 80.148737] BUG: Bad rss-counter state mm:00000000bae944b6 type:MM_FILEPAGES val:33 [ 80.150013] BUG: Bad rss-counter state mm:00000000bae944b6 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:57979' (ECDSA) to the list of known hosts. 2023/06/20 05:39:55 fuzzer started 2023/06/20 05:39:55 dialing manager at localhost:44161 2023/06/20 05:39:55 checking machine... 2023/06/20 05:39:55 checking revisions... [ 80.717045] kmemleak: Automatic memory scanning thread ended 2023/06/20 05:39:55 testing simple program... [ 80.770111] cgroup: Unknown subsys name 'net' [ 80.814710] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:39:02 Registers: info registers vcpu 0 RAX=1ffff1100199a3db RBX=ffff88800ccd1ea8 RCX=ffffffff812e00e5 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88800ccd1ed8 RBP=ffff888018878000 RSP=ffff88806ce09dd8 R8 =0000000000000001 R9 =ffffed100d9c13af R10=0000000000000003 R11=00000000000b6996 R12=dffffc0000000000 R13=ffff8880188bd780 R14=ffffffff813782a8 R15=ffff88800bad3d80 RIP=ffffffff8184636c RFL=00000046 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f140d86f900 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007ffe7edea000 CR3=000000001a906000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c58400 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007fd1b143c050 CR3=000000000d5c6000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=ccfcfa4e32c449b5514df456dceb4b9a XMM02=ec2efd57dc4c00df000000000012a4a8 XMM03=ade103a54a58f3b0000000000012a578 XMM04=67b505fdf947550600000000000ae988 XMM05=8d3cfd36dce1b7840000000000141478 XMM06=4fda316b135da52b0000000000141018 XMM07=e042d86d42eb936e00000000001306d8 XMM08=ade103a54a58f3b0000000000012a578 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000