[ 30.706583] BUG: Bad rss-counter state mm:00000000526974ec type:MM_FILEPAGES val:33 [ 30.707327] BUG: Bad rss-counter state mm:00000000526974ec type:MM_ANONPAGES val:22 [ 30.815189] ================================================================== [ 30.816245] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.817182] Read of size 8 at addr ffff88801a3df968 by task sshd/221 [ 30.817603] [ 30.817724] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.818194] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.818727] Call Trace: [ 30.818902] [ 30.819059] dump_stack_lvl+0x91/0xf0 [ 30.819349] print_report+0xcc/0x620 [ 30.819618] ? __virt_addr_valid+0x102/0x340 [ 30.819923] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.820262] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.820608] kasan_report+0xbe/0xf0 [ 30.820869] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.821212] vma_interval_tree_remove+0xc75/0xec0 [ 30.821542] vma_prepare+0xc54/0x11a0 [ 30.821812] __split_vma+0x5af/0x950 [ 30.822080] ? __pfx___split_vma+0x10/0x10 [ 30.822368] ? find_held_lock+0x2c/0x110 [ 30.822655] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.822961] ? lock_is_held_type+0x9f/0x120 [ 30.823257] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.823587] ? mtree_range_walk+0x632/0x900 [ 30.823889] ? mas_walk+0x5c7/0x7c0 [ 30.824151] do_vmi_munmap+0x1f1/0x2b0 [ 30.824425] mmap_region+0x1f9/0x2660 [ 30.824689] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.824969] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.825360] ? __pfx_lock_acquire+0x10/0x10 [ 30.825652] ? __pfx_mmap_region+0x10/0x10 [ 30.825941] ? security_mmap_addr+0x7d/0xa0 [ 30.826234] ? get_unmapped_area+0x1f5/0x3f0 [ 30.826531] do_mmap+0x854/0xf00 [ 30.826772] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.827041] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.827345] ksys_mmap_pgoff+0x3af/0x500 [ 30.827621] do_syscall_64+0x3f/0x90 [ 30.827881] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.828235] RIP: 0033:0x7f80478e7d82 [ 30.828495] 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 [ 30.829657] RSP: 002b:00007ffe4bc69348 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.830148] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f80478e7d82 [ 30.830603] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f8046d21000 [ 30.831062] RBP: 00007f8046d21000 R08: 0000000000000009 R09: 0000000000001000 [ 30.831517] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a13f7c9ec0 [ 30.831980] R13: 00007ffe4bc69360 R14: 00007ffe4bc69390 R15: 00007ffe4bc696f0 [ 30.832451] [ 30.832611] [ 30.832729] Allocated by task 212: [ 30.832964] kasan_save_stack+0x22/0x50 [ 30.833239] kasan_set_track+0x25/0x30 [ 30.833505] __kasan_slab_alloc+0x59/0x70 [ 30.833793] kmem_cache_alloc+0x16b/0x370 [ 30.834074] vm_area_dup+0x20/0x160 [ 30.834323] __split_vma+0x170/0x950 [ 30.834577] split_vma+0xc6/0x110 [ 30.834819] mprotect_fixup+0x8d2/0xb30 [ 30.835097] do_mprotect_pkey+0x87e/0xd40 [ 30.835380] __x64_sys_mprotect+0x78/0xc0 [ 30.835662] do_syscall_64+0x3f/0x90 [ 30.835921] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.836272] [ 30.836388] Freed by task 204: [ 30.836609] kasan_save_stack+0x22/0x50 [ 30.836882] kasan_set_track+0x25/0x30 [ 30.837154] kasan_save_free_info+0x2b/0x50 [ 30.837443] __kasan_slab_free+0x10a/0x190 [ 30.837735] kmem_cache_free+0x10d/0x4d0 [ 30.838018] rcu_core+0x8c8/0x2860 [ 30.838260] __do_softirq+0x1b7/0x7d4 [ 30.838521] [ 30.838638] Last potentially related work creation: [ 30.838957] kasan_save_stack+0x22/0x50 [ 30.839233] __kasan_record_aux_stack+0x8e/0xa0 [ 30.839544] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.839899] remove_vma+0x139/0x170 [ 30.840144] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.840460] do_vmi_munmap+0x1f1/0x2b0 [ 30.840723] __vm_munmap+0x138/0x3a0 [ 30.840975] __x64_sys_munmap+0x59/0x80 [ 30.841243] do_syscall_64+0x3f/0x90 [ 30.841500] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.841844] [ 30.841960] The buggy address belongs to the object at ffff88801a3df910 [ 30.841960] which belongs to the cache vm_area_struct of size 168 [ 30.842756] The buggy address is located 88 bytes inside of [ 30.842756] freed 168-byte region [ffff88801a3df910, ffff88801a3df9b8) [ 30.843519] [ 30.843635] The buggy address belongs to the physical page: [ 30.843991] page:0000000041f3bd98 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a3df [ 30.844586] memcg:ffff88801a3ce201 [ 30.844817] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.845169] page_type: 0xffffffff() [ 30.845412] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.845910] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a3ce201 [ 30.846405] page dumped because: kasan: bad access detected [ 30.846761] [ 30.846878] Memory state around the buggy address: [ 30.847191] ffff88801a3df800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 [ 30.847654] ffff88801a3df880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 30.848119] >ffff88801a3df900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.848588] ^ [ 30.849007] ffff88801a3df980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 30.849472] ffff88801a3dfa00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.849928] ================================================================== [ 30.850490] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 32.716013] BUG: Bad rss-counter state mm:00000000e0cb17ea type:MM_FILEPAGES val:33 [ 32.717097] BUG: Bad rss-counter state mm:00000000e0cb17ea type:MM_ANONPAGES val:22 [ 33.207084] BUG: Bad rss-counter state mm:00000000f3595a76 type:MM_FILEPAGES val:33 [ 33.208082] BUG: Bad rss-counter state mm:00000000f3595a76 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:4470' (ECDSA) to the list of known hosts. 2023/06/21 10:49:22 fuzzer started 2023/06/21 10:49:22 dialing manager at localhost:36067 2023/06/21 10:49:23 checking machine... 2023/06/21 10:49:23 checking revisions... [ 33.810917] kmemleak: Automatic memory scanning thread ended 2023/06/21 10:49:23 testing simple program... [ 33.867864] cgroup: Unknown subsys name 'net' [ 33.928571] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 10:49:22 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=ffffffff813ad470 RCX=0000000000000001 RDX=1ffff1100d9c137a RSI=ffffffff8460144a RDI=ffff88806ce09a50 RBP=ffff88806ce09ae8 RSP=ffff88806ce09a50 R8 =0000000000000001 R9 =ffff88806ce09a90 R10=0000000000038001 R11=00000000000b5305 R12=ffff88806ce09b18 R13=0000000000000000 R14=ffff8880158a51c0 R15=ffff88800d7b2900 RIP=ffffffff810bd052 RFL=00000202 [-------] 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 00007fa018419900 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=00007fa0189ce650 CR3=000000001a28a000 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=2032323a39343a3031203132206e754a XMM01=657463656e6e6f63736944203a5d3932 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3932325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732032323a39343a3031203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=00007ffda583cf90 RCX=00007f205e1a2200 RDX=00000000000f9200 RSI=00007ffda583cf9a RDI=00007f205e1a2232 RBP=0000555d3cd3a290 RSP=00007ffda583ca50 R8 =0000000000000042 R9 =00007ffda583ca80 R10=0000000000000002 R11=000000000000e158 R12=000000000000001a R13=057efcb071e13aec R14=0000000000000000 R15=00007ffda583ca88 RIP=00007f205f842cf8 RFL=00000202 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f205ecbe900 00000000 00000000 GS =0000 0000000000000000 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=00007f205e0ea250 CR3=000000000c73a000 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=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM01=00000000000000000000000000000000 XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=7c3405e5d6c335a500000000000ae988 XMM05=6184df570b7a029300000000001332a0 XMM06=4fda316b135da52b0000000000131d20 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000