syzkaller login: [ 31.469300] BUG: Bad rss-counter state mm:0000000051dc1153 type:MM_FILEPAGES val:33 [ 31.470475] BUG: Bad rss-counter state mm:0000000051dc1153 type:MM_ANONPAGES val:22 [ 31.510729] ================================================================== [ 31.511688] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.512704] Read of size 8 at addr ffff88800ed63a50 by task sshd/221 [ 31.513508] [ 31.513798] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.514695] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.515709] Call Trace: [ 31.516070] [ 31.516348] dump_stack_lvl+0x91/0xf0 [ 31.516877] print_report+0xcc/0x620 [ 31.517399] ? __virt_addr_valid+0x102/0x340 [ 31.517969] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.518575] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.519266] kasan_report+0xbe/0xf0 [ 31.519728] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.520324] vma_interval_tree_remove+0xc75/0xec0 [ 31.520912] vma_prepare+0xc54/0x11a0 [ 31.521380] __split_vma+0x5af/0x950 [ 31.521928] ? __pfx___split_vma+0x10/0x10 [ 31.522460] ? find_held_lock+0x2c/0x110 [ 31.522972] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.523617] ? lock_is_held_type+0x9f/0x120 [ 31.524211] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.524807] ? mtree_range_walk+0x632/0x900 [ 31.525409] ? mas_walk+0x5c7/0x7c0 [ 31.525873] do_vmi_munmap+0x1f1/0x2b0 [ 31.526382] mmap_region+0x1f9/0x2660 [ 31.526920] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.527515] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.528244] ? __pfx_lock_acquire+0x10/0x10 [ 31.528764] ? __pfx_mmap_region+0x10/0x10 [ 31.529289] ? security_mmap_addr+0x7d/0xa0 [ 31.529808] ? get_unmapped_area+0x1f5/0x3f0 [ 31.530361] do_mmap+0x854/0xf00 [ 31.530794] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.531283] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.531841] ksys_mmap_pgoff+0x3af/0x500 [ 31.532340] do_syscall_64+0x3f/0x90 [ 31.532810] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.533441] RIP: 0033:0x7f582adb6d82 [ 31.533891] 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 [ 31.535990] RSP: 002b:00007ffccbee82b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.536885] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f582adb6d82 [ 31.537722] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f582a1f0000 [ 31.538550] RBP: 00007f582a1f0000 R08: 0000000000000009 R09: 0000000000001000 [ 31.539386] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ee05ae1ec0 [ 31.540214] R13: 00007ffccbee82d0 R14: 00007ffccbee8300 R15: 00007ffccbee8660 [ 31.541056] [ 31.541348] [ 31.541563] Allocated by task 214: [ 31.541987] kasan_save_stack+0x22/0x50 [ 31.542511] kasan_set_track+0x25/0x30 [ 31.543000] __kasan_slab_alloc+0x59/0x70 [ 31.543520] kmem_cache_alloc+0x16b/0x370 [ 31.544031] vm_area_dup+0x20/0x160 [ 31.544479] __split_vma+0x170/0x950 [ 31.544940] split_vma+0xc6/0x110 [ 31.545375] mprotect_fixup+0x8d2/0xb30 [ 31.545872] do_mprotect_pkey+0x87e/0xd40 [ 31.546388] __x64_sys_mprotect+0x78/0xc0 [ 31.546904] do_syscall_64+0x3f/0x90 [ 31.547372] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.548004] [ 31.548216] Freed by task 214: [ 31.548605] kasan_save_stack+0x22/0x50 [ 31.549098] kasan_set_track+0x25/0x30 [ 31.549585] kasan_save_free_info+0x2b/0x50 [ 31.550118] __kasan_slab_free+0x10a/0x190 [ 31.550645] kmem_cache_free+0x10d/0x4d0 [ 31.551147] rcu_core+0x8c8/0x2860 [ 31.551594] __do_softirq+0x1b7/0x7d4 [ 31.552064] [ 31.552275] Last potentially related work creation: [ 31.552855] kasan_save_stack+0x22/0x50 [ 31.553352] __kasan_record_aux_stack+0x8e/0xa0 [ 31.553919] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.554566] remove_vma+0x139/0x170 [ 31.555011] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.555610] do_vmi_munmap+0x1f1/0x2b0 [ 31.556091] __vm_munmap+0x138/0x3a0 [ 31.556552] __x64_sys_munmap+0x59/0x80 [ 31.557034] do_syscall_64+0x3f/0x90 [ 31.557502] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.558148] [ 31.558362] The buggy address belongs to the object at ffff88800ed639f8 [ 31.558362] which belongs to the cache vm_area_struct of size 168 [ 31.559807] The buggy address is located 88 bytes inside of [ 31.559807] freed 168-byte region [ffff88800ed639f8, ffff88800ed63aa0) [ 31.561182] [ 31.561395] The buggy address belongs to the physical page: [ 31.562054] page:00000000c68d06b7 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xed63 [ 31.563127] memcg:ffff8880161cac01 [ 31.563546] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.564182] page_type: 0xffffffff() [ 31.564626] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 31.565530] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880161cac01 [ 31.566433] page dumped because: kasan: bad access detected [ 31.567087] [ 31.567302] Memory state around the buggy address: [ 31.567868] ffff88800ed63900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.568710] ffff88800ed63980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 31.569548] >ffff88800ed63a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.570401] ^ [ 31.571095] ffff88800ed63a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 31.571946] ffff88800ed63b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.572786] ================================================================== [ 31.573698] Disabling lock debugging due to kernel taint [ 34.314569] BUG: Bad rss-counter state mm:00000000ce8f5972 type:MM_FILEPAGES val:31 [ 34.315576] BUG: Bad rss-counter state mm:00000000ce8f5972 type:MM_ANONPAGES val:22 [ 34.736492] BUG: Bad rss-counter state mm:000000004ad8694c type:MM_FILEPAGES val:33 [ 34.737257] BUG: Bad rss-counter state mm:000000004ad8694c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:18052' (ECDSA) to the list of known hosts. 2023/06/19 17:03:02 fuzzer started 2023/06/19 17:03:03 dialing manager at localhost:44161 2023/06/19 17:03:03 checking machine... 2023/06/19 17:03:03 checking revisions... [ 35.466148] kmemleak: Automatic memory scanning thread ended 2023/06/19 17:03:03 testing simple program... [ 35.520637] cgroup: Unknown subsys name 'net' [ 35.563366] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:03:02 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffffff83677d2f RCX=0000000000000001 RDX=1ffff11002849eb4 RSI=ffff88801424f910 RDI=ffffffff83677d2f RBP=ffff88801424f5a0 RSP=ffff88801424f518 R8 =0000000000000001 R9 =ffff88801424f588 R10=0000000000038001 R11=0000000000020d06 R12=ffff88801424f610 R13=0000000000000000 R14=ffff888019f2d1c0 R15=0000000000000014 RIP=ffffffff811fc7a0 RFL=00000246 [---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 00007ff8d40da900 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=00007ff8d4691618 CR3=000000000daac000 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=563412feff00545000000000000080fe XMM01=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000080010002 RBX=0000000000000001 RCX=ffffffff813bebe3 RDX=ffff888008d751c0 RSI=0000000000000000 RDI=0000000000000001 RBP=ffff88806cf2b940 RSP=ffff88806cf09f00 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000000 R11=ffff88806cf09ff8 R12=0000000000000000 R13=ffff88806cf2b984 R14=0000000000000000 R15=ffff88806cf2b940 RIP=ffffffff814c07eb 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 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=00007fb50b3cacb0 CR3=000000000e5bc000 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=ac27c5ea50d5cfb874434289cba0c570 XMM02=ec2efd57dc4c00df000000000011ee70 XMM03=20997f593ec3a989000000000011ef40 XMM04=25346e2cd5a2fa9800000000000ae988 XMM05=e4cb8bb95a7664b600000000001353b8 XMM06=f51d35f023f163ed0000000000134220 XMM07=e042d86d42eb936e0000000000125b38 XMM08=20997f593ec3a989000000000011ef40 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000