syzkaller login: [ 30.679327] BUG: Bad rss-counter state mm:0000000060b6873a type:MM_FILEPAGES val:33 [ 30.680943] BUG: Bad rss-counter state mm:0000000060b6873a type:MM_ANONPAGES val:22 [ 30.837778] ================================================================== [ 30.838725] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.839687] Read of size 8 at addr ffff88800951db38 by task sshd/220 [ 30.840459] [ 30.840781] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.841648] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.842630] Call Trace: [ 30.842981] [ 30.843268] dump_stack_lvl+0x91/0xf0 [ 30.843774] print_report+0xcc/0x620 [ 30.844272] ? __virt_addr_valid+0x102/0x340 [ 30.844825] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.845457] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.846074] kasan_report+0xbe/0xf0 [ 30.846555] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.847191] vma_interval_tree_remove+0xc75/0xec0 [ 30.847803] vma_prepare+0xc54/0x11a0 [ 30.848287] __split_vma+0x5af/0x950 [ 30.848776] ? __pfx___split_vma+0x10/0x10 [ 30.849311] ? find_held_lock+0x2c/0x110 [ 30.849833] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.850397] ? lock_is_held_type+0x9f/0x120 [ 30.850959] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.851569] ? mtree_range_walk+0x632/0x900 [ 30.852123] ? mas_walk+0x5c7/0x7c0 [ 30.852603] do_vmi_munmap+0x1f1/0x2b0 [ 30.853097] mmap_region+0x1f9/0x2660 [ 30.853590] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.854102] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.854825] ? __pfx_lock_acquire+0x10/0x10 [ 30.855370] ? __pfx_mmap_region+0x10/0x10 [ 30.855899] ? security_mmap_addr+0x7d/0xa0 [ 30.856431] ? get_unmapped_area+0x1f5/0x3f0 [ 30.856979] do_mmap+0x854/0xf00 [ 30.857422] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.857923] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.858491] ksys_mmap_pgoff+0x3af/0x500 [ 30.859015] do_syscall_64+0x3f/0x90 [ 30.859511] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.860163] RIP: 0033:0x7fb1b511ed82 [ 30.860633] 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 [ 30.862767] RSP: 002b:00007ffc5dcd6168 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.863696] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb1b511ed82 [ 30.864544] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb1b4558000 [ 30.865387] RBP: 00007fb1b4558000 R08: 0000000000000009 R09: 0000000000001000 [ 30.866228] R10: 0000000000000812 R11: 0000000000000206 R12: 0000555ab5bf8d90 [ 30.867090] R13: 00007ffc5dcd6180 R14: 00007ffc5dcd61b0 R15: 00007ffc5dcd6510 [ 30.867953] [ 30.868254] [ 30.868470] Allocated by task 213: [ 30.868899] kasan_save_stack+0x22/0x50 [ 30.869405] kasan_set_track+0x25/0x30 [ 30.869898] __kasan_slab_alloc+0x59/0x70 [ 30.870425] kmem_cache_alloc+0x16b/0x370 [ 30.870955] vm_area_dup+0x20/0x160 [ 30.871415] __split_vma+0x170/0x950 [ 30.871885] split_vma+0xc6/0x110 [ 30.872329] mprotect_fixup+0x8d2/0xb30 [ 30.872831] do_mprotect_pkey+0x87e/0xd40 [ 30.873379] __x64_sys_mprotect+0x78/0xc0 [ 30.873899] do_syscall_64+0x3f/0x90 [ 30.874388] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.875055] [ 30.875273] Freed by task 213: [ 30.875662] kasan_save_stack+0x22/0x50 [ 30.876176] kasan_set_track+0x25/0x30 [ 30.876680] kasan_save_free_info+0x2b/0x50 [ 30.877219] __kasan_slab_free+0x10a/0x190 [ 30.877760] kmem_cache_free+0x10d/0x4d0 [ 30.878287] rcu_core+0x8c8/0x2860 [ 30.878730] __do_softirq+0x1b7/0x7d4 [ 30.879223] [ 30.879447] Last potentially related work creation: [ 30.880039] kasan_save_stack+0x22/0x50 [ 30.880567] __kasan_record_aux_stack+0x8e/0xa0 [ 30.881139] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.881783] remove_vma+0x139/0x170 [ 30.882238] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.882794] do_vmi_munmap+0x1f1/0x2b0 [ 30.883297] __vm_munmap+0x138/0x3a0 [ 30.883772] __x64_sys_munmap+0x59/0x80 [ 30.884279] do_syscall_64+0x3f/0x90 [ 30.884754] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.885400] [ 30.885619] The buggy address belongs to the object at ffff88800951dae0 [ 30.885619] which belongs to the cache vm_area_struct of size 168 [ 30.887127] The buggy address is located 88 bytes inside of [ 30.887127] freed 168-byte region [ffff88800951dae0, ffff88800951db88) [ 30.888534] [ 30.888756] The buggy address belongs to the physical page: [ 30.889416] page:000000005d40fa8b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x951d [ 30.890503] memcg:ffff888019060601 [ 30.890936] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.891588] page_type: 0xffffffff() [ 30.892038] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.892970] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888019060601 [ 30.893887] page dumped because: kasan: bad access detected [ 30.894550] [ 30.894771] Memory state around the buggy address: [ 30.895361] ffff88800951da00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.896214] ffff88800951da80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 30.897074] >ffff88800951db00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.897930] ^ [ 30.898532] ffff88800951db80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 30.899409] ffff88800951dc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 30.900273] ================================================================== [ 30.901257] Disabling lock debugging due to kernel taint [ 32.965073] BUG: Bad rss-counter state mm:0000000038fe0784 type:MM_FILEPAGES val:33 [ 32.966105] BUG: Bad rss-counter state mm:0000000038fe0784 type:MM_ANONPAGES val:22 [ 33.503198] BUG: Bad rss-counter state mm:0000000011f150d5 type:MM_FILEPAGES val:33 [ 33.504602] BUG: Bad rss-counter state mm:0000000011f150d5 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:11507' (ECDSA) to the list of known hosts. 2023/06/20 16:28:03 fuzzer started 2023/06/20 16:28:03 dialing manager at localhost:36067 2023/06/20 16:28:03 checking machine... 2023/06/20 16:28:03 checking revisions... [ 34.197681] kmemleak: Automatic memory scanning thread ended 2023/06/20 16:28:03 testing simple program... [ 34.246530] cgroup: Unknown subsys name 'net' [ 34.295059] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:28:03 Registers: info registers vcpu 0 RAX=0000000000000002 RBX=ffff88800e17fac8 RCX=ffffffff860d8201 RDX=0000000000000000 RSI=ffffffff81846194 RDI=ffff88800e17fad4 RBP=0000000000000000 RSP=ffff88800e17f9e0 R8 =ffffffff860d825a R9 =ffff88800e17fa40 R10=0000000000038001 R11=0000000000010b8d R12=ffff88800e17fac8 R13=0000000000000000 R14=ffff88800ee6b680 R15=ffff888008cc2be0 RIP=ffffffff813ad564 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 00007fbe26016900 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=00007fbe265cd618 CR3=000000000e41e000 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=00000000000000000000000000000000 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=ffff88800e12a198 RBX=ffff88801c9288b8 RCX=0000000000000000 RDX=dffffc0000000000 RSI=ffff88801c9288b8 RDI=1ffff11001c25433 RBP=ffff88801c9288b8 RSP=ffff888008e37c78 R8 =0000000000000001 R9 =ffffed10011c6f87 R10=0000000000000003 R11=0000000000000128 R12=ffff88801c9288c8 R13=ffff88801c928528 R14=ffff88801c9288b8 R15=ffffffff87b89f80 RIP=ffffffff844d232a 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=00007ff3e4ac7010 CR3=000000000c560000 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=1674ad7bd44671ba5f4aff2cb3a19532 XMM02=000000000011afa0ec2efd57dc4c00df XMM03=0000000000121d803950c3624deea2ca XMM04=b0e8f95453981efc00000000000ae988 XMM05=19e9129bd510f2350000000000131bf0 XMM06=2f5db481b74854d50000000000130a58 XMM07=e042d86d42eb936e0000000000122000 XMM08=3950c3624deea2ca000000000011b000 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000