[ 25.609048] BUG: Bad rss-counter state mm:00000000452631c0 type:MM_FILEPAGES val:33 [ 25.610102] BUG: Bad rss-counter state mm:00000000452631c0 type:MM_ANONPAGES val:22 [ 25.733134] ================================================================== [ 25.733833] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 25.734571] Read of size 8 at addr ffff88800dd54228 by task sshd/219 [ 25.735166] [ 25.735338] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 25.736001] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 25.736761] Call Trace: [ 25.737197] [ 25.737415] dump_stack_lvl+0x91/0xf0 [ 25.737797] print_report+0xcc/0x620 [ 25.738168] ? __virt_addr_valid+0x102/0x340 [ 25.738610] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.739088] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.739564] kasan_report+0xbe/0xf0 [ 25.739926] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.740407] vma_interval_tree_remove+0xc75/0xec0 [ 25.740868] vma_prepare+0xc54/0x11a0 [ 25.741238] __split_vma+0x5af/0x950 [ 25.741604] ? __pfx___split_vma+0x10/0x10 [ 25.742008] ? find_held_lock+0x2c/0x110 [ 25.742435] do_vmi_align_munmap+0x2ba/0x11f0 [ 25.742873] ? lock_is_held_type+0x9f/0x120 [ 25.743346] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 25.743725] ? mtree_range_walk+0x632/0x900 [ 25.744049] ? mas_walk+0x5c7/0x7c0 [ 25.744325] do_vmi_munmap+0x1f1/0x2b0 [ 25.744616] mmap_region+0x1f9/0x2660 [ 25.744898] ? vm_mmap_pgoff+0x15c/0x3a0 [ 25.745203] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 25.745619] ? __pfx_lock_acquire+0x10/0x10 [ 25.745934] ? __pfx_mmap_region+0x10/0x10 [ 25.746245] ? security_mmap_addr+0x7d/0xa0 [ 25.746554] ? get_unmapped_area+0x1f5/0x3f0 [ 25.746873] do_mmap+0x854/0xf00 [ 25.747131] vm_mmap_pgoff+0x1a6/0x3a0 [ 25.747415] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 25.747749] ksys_mmap_pgoff+0x3af/0x500 [ 25.748045] do_syscall_64+0x3f/0x90 [ 25.748314] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.748699] RIP: 0033:0x7fb1d6cc2d82 [ 25.748961] 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 [ 25.750211] RSP: 002b:00007ffde8515278 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 25.750747] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb1d6cc2d82 [ 25.751232] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb1d60fc000 [ 25.751729] RBP: 00007fb1d60fc000 R08: 0000000000000009 R09: 0000000000001000 [ 25.752231] R10: 0000000000000812 R11: 0000000000000206 R12: 0000558cb0d2fd90 [ 25.752727] R13: 00007ffde8515290 R14: 00007ffde85152c0 R15: 00007ffde8515620 [ 25.753224] [ 25.753391] [ 25.753514] Allocated by task 212: [ 25.753764] kasan_save_stack+0x22/0x50 [ 25.754056] kasan_set_track+0x25/0x30 [ 25.754351] __kasan_slab_alloc+0x59/0x70 [ 25.754654] kmem_cache_alloc+0x16b/0x370 [ 25.754954] vm_area_dup+0x20/0x160 [ 25.755221] __split_vma+0x170/0x950 [ 25.755500] split_vma+0xc6/0x110 [ 25.755759] mprotect_fixup+0x8d2/0xb30 [ 25.756054] do_mprotect_pkey+0x87e/0xd40 [ 25.756355] __x64_sys_mprotect+0x78/0xc0 [ 25.756663] do_syscall_64+0x3f/0x90 [ 25.756936] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.757308] [ 25.757438] Freed by task 210: [ 25.757663] kasan_save_stack+0x22/0x50 [ 25.757955] kasan_set_track+0x25/0x30 [ 25.758246] kasan_save_free_info+0x2b/0x50 [ 25.758557] __kasan_slab_free+0x10a/0x190 [ 25.758865] kmem_cache_free+0x10d/0x4d0 [ 25.759156] rcu_core+0x8c8/0x2860 [ 25.759411] __do_softirq+0x1b7/0x7d4 [ 25.759689] [ 25.759815] Last potentially related work creation: [ 25.760151] kasan_save_stack+0x22/0x50 [ 25.760441] __kasan_record_aux_stack+0x8e/0xa0 [ 25.760774] __call_rcu_common.constprop.0+0x6a/0xb90 [ 25.761148] remove_vma+0x139/0x170 [ 25.761405] do_vmi_align_munmap+0xd4a/0x11f0 [ 25.761736] do_vmi_munmap+0x1f1/0x2b0 [ 25.762022] __vm_munmap+0x138/0x3a0 [ 25.762298] __x64_sys_munmap+0x59/0x80 [ 25.762587] do_syscall_64+0x3f/0x90 [ 25.762862] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.763226] [ 25.763351] Second to last potentially related work creation: [ 25.763752] kasan_save_stack+0x22/0x50 [ 25.764048] __kasan_record_aux_stack+0x8e/0xa0 [ 25.764380] __call_rcu_common.constprop.0+0x6a/0xb90 [ 25.764753] remove_vma+0x139/0x170 [ 25.765014] do_vmi_align_munmap+0xd4a/0x11f0 [ 25.765339] do_vmi_munmap+0x1f1/0x2b0 [ 25.765625] mmap_region+0x1f9/0x2660 [ 25.765905] do_mmap+0x854/0xf00 [ 25.766158] vm_mmap_pgoff+0x1a6/0x3a0 [ 25.766447] ksys_mmap_pgoff+0x3af/0x500 [ 25.766740] do_syscall_64+0x3f/0x90 [ 25.767015] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.767385] [ 25.767509] The buggy address belongs to the object at ffff88800dd541d0 [ 25.767509] which belongs to the cache vm_area_struct of size 168 [ 25.768365] The buggy address is located 88 bytes inside of [ 25.768365] freed 168-byte region [ffff88800dd541d0, ffff88800dd54278) [ 25.769181] [ 25.769306] The buggy address belongs to the physical page: [ 25.769696] page:000000003ea2c14d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdd54 [ 25.770343] memcg:ffff88800e07c901 [ 25.770593] flags: 0x100000000000200(slab|node=0|zone=1) [ 25.770969] page_type: 0xffffffff() [ 25.771221] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 25.771754] raw: 0000000000000000 0000000080110011 00000001ffffffff ffff88800e07c901 [ 25.772277] page dumped because: kasan: bad access detected [ 25.772660] [ 25.772783] Memory state around the buggy address: [ 25.773121] ffff88800dd54100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 25.773623] ffff88800dd54180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 25.774116] >ffff88800dd54200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 25.774611] ^ [ 25.774931] ffff88800dd54280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 25.775427] ffff88800dd54300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 25.775927] ================================================================== [ 25.776449] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 27.263219] BUG: Bad rss-counter state mm:00000000184697fe type:MM_FILEPAGES val:33 [ 27.263786] BUG: Bad rss-counter state mm:00000000184697fe type:MM_ANONPAGES val:22 [ 27.687691] BUG: Bad rss-counter state mm:0000000056f0bd0c type:MM_FILEPAGES val:33 [ 27.688862] BUG: Bad rss-counter state mm:0000000056f0bd0c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:4931' (ECDSA) to the list of known hosts. 2023/06/20 06:16:39 fuzzer started 2023/06/20 06:16:39 dialing manager at localhost:44161 2023/06/20 06:16:39 checking machine... 2023/06/20 06:16:39 checking revisions... [ 28.404291] kmemleak: Automatic memory scanning thread ended 2023/06/20 06:16:40 testing simple program... [ 28.452057] cgroup: Unknown subsys name 'net' [ 28.502521] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 06:16:37 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 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 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=000055facacc0000 CR3=000000000ca4c000 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=2039333a36313a3630203032206e754a XMM01=657463656e6e6f63736944203a5d3832 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3832325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732039333a36313a3630203032 XMM08=3d656e696c646d632022656369767265 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=0000000000000001 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=00007f809d6fd330 CR3=000000000d598000 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=596c142678ea9ab7a14aecb00fe51b74 XMM02=ec2efd57dc4c00df000000000011fdb8 XMM03=9d312390b45fb646000000000011fe88 XMM04=46a0e61025d9d54600000000000ae988 XMM05=0536f3351c863e2e0000000000135b58 XMM06=f94faffb2a0989740000000000134588 XMM07=fb795ef6d65770560000000000123ad0 XMM08=2c67c8bc2e329bc3000000000011fe28 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000