syzkaller login: [ 60.686208] BUG: Bad rss-counter state mm:0000000088fe8e61 type:MM_FILEPAGES val:33 [ 60.687192] BUG: Bad rss-counter state mm:0000000088fe8e61 type:MM_ANONPAGES val:22 [ 60.847513] ================================================================== [ 60.848624] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 60.849641] Read of size 8 at addr ffff88800dee5a50 by task sshd/220 [ 60.850553] [ 60.850776] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 60.851668] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 60.852678] Call Trace: [ 60.852994] [ 60.853276] dump_stack_lvl+0x91/0xf0 [ 60.853759] print_report+0xcc/0x620 [ 60.854238] ? __virt_addr_valid+0x102/0x340 [ 60.854789] ? vma_interval_tree_remove+0xc75/0xec0 [ 60.855398] ? vma_interval_tree_remove+0xc75/0xec0 [ 60.856000] kasan_report+0xbe/0xf0 [ 60.856469] ? vma_interval_tree_remove+0xc75/0xec0 [ 60.857115] vma_interval_tree_remove+0xc75/0xec0 [ 60.857711] vma_prepare+0xc54/0x11a0 [ 60.858197] __split_vma+0x5af/0x950 [ 60.858670] ? __pfx___split_vma+0x10/0x10 [ 60.859225] ? find_held_lock+0x2c/0x110 [ 60.859765] do_vmi_align_munmap+0x2ba/0x11f0 [ 60.860327] ? lock_is_held_type+0x9f/0x120 [ 60.860872] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 60.861479] ? mtree_range_walk+0x632/0x900 [ 60.862047] ? mas_walk+0x5c7/0x7c0 [ 60.862523] do_vmi_munmap+0x1f1/0x2b0 [ 60.863029] mmap_region+0x1f9/0x2660 [ 60.863509] ? vm_mmap_pgoff+0x15c/0x3a0 [ 60.864019] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 60.864763] ? __pfx_lock_acquire+0x10/0x10 [ 60.865301] ? __pfx_mmap_region+0x10/0x10 [ 60.865828] ? security_mmap_addr+0x7d/0xa0 [ 60.866355] ? get_unmapped_area+0x1f5/0x3f0 [ 60.866908] do_mmap+0x854/0xf00 [ 60.867367] vm_mmap_pgoff+0x1a6/0x3a0 [ 60.867871] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 60.868432] ksys_mmap_pgoff+0x3af/0x500 [ 60.868943] do_syscall_64+0x3f/0x90 [ 60.869423] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 60.870065] RIP: 0033:0x7f9ca9127d82 [ 60.870520] 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 [ 60.872782] RSP: 002b:00007ffe29fa8be8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 60.873695] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f9ca9127d82 [ 60.874534] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f9ca8561000 [ 60.875381] RBP: 00007f9ca8561000 R08: 0000000000000009 R09: 0000000000001000 [ 60.876219] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564237a14980 [ 60.877064] R13: 00007ffe29fa8c00 R14: 00007ffe29fa8c30 R15: 00007ffe29fa8f90 [ 60.877913] [ 60.878204] [ 60.878420] Allocated by task 213: [ 60.878843] kasan_save_stack+0x22/0x50 [ 60.879351] kasan_set_track+0x25/0x30 [ 60.879839] __kasan_slab_alloc+0x59/0x70 [ 60.880355] kmem_cache_alloc+0x16b/0x370 [ 60.880868] vm_area_dup+0x20/0x160 [ 60.881320] __split_vma+0x170/0x950 [ 60.881776] split_vma+0xc6/0x110 [ 60.882209] mprotect_fixup+0x8d2/0xb30 [ 60.882703] do_mprotect_pkey+0x87e/0xd40 [ 60.883215] __x64_sys_mprotect+0x78/0xc0 [ 60.883734] do_syscall_64+0x3f/0x90 [ 60.884212] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 60.884886] [ 60.885097] Freed by task 213: [ 60.885488] kasan_save_stack+0x22/0x50 [ 60.885984] kasan_set_track+0x25/0x30 [ 60.886470] kasan_save_free_info+0x2b/0x50 [ 60.886998] __kasan_slab_free+0x10a/0x190 [ 60.887529] kmem_cache_free+0x10d/0x4d0 [ 60.888027] rcu_core+0x8c8/0x2860 [ 60.888469] __do_softirq+0x1b7/0x7d4 [ 60.888959] [ 60.889171] Last potentially related work creation: [ 60.889745] kasan_save_stack+0x22/0x50 [ 60.890249] __kasan_record_aux_stack+0x8e/0xa0 [ 60.890882] __call_rcu_common.constprop.0+0x6a/0xb90 [ 60.891516] remove_vma+0x139/0x170 [ 60.891967] do_vmi_align_munmap+0xd4a/0x11f0 [ 60.892533] do_vmi_munmap+0x1f1/0x2b0 [ 60.893010] __vm_munmap+0x138/0x3a0 [ 60.893476] __x64_sys_munmap+0x59/0x80 [ 60.893969] do_syscall_64+0x3f/0x90 [ 60.894436] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 60.895081] [ 60.895293] The buggy address belongs to the object at ffff88800dee59f8 [ 60.895293] which belongs to the cache vm_area_struct of size 168 [ 60.896745] The buggy address is located 88 bytes inside of [ 60.896745] freed 168-byte region [ffff88800dee59f8, ffff88800dee5aa0) [ 60.898139] [ 60.898355] The buggy address belongs to the physical page: [ 60.899007] page:00000000d103cdd1 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdee5 [ 60.900071] memcg:ffff8880164a4a01 [ 60.900549] flags: 0x100000000000200(slab|node=0|zone=1) [ 60.901367] page_type: 0xffffffff() [ 60.901924] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 60.903042] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880164a4a01 [ 60.904147] page dumped because: kasan: bad access detected [ 60.904985] [ 60.905247] Memory state around the buggy address: [ 60.905949] ffff88800dee5900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 60.906984] ffff88800dee5980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 60.908022] >ffff88800dee5a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.909069] ^ [ 60.909924] ffff88800dee5a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 60.910963] ffff88800dee5b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.912000] ================================================================== [ 60.913461] Disabling lock debugging due to kernel taint [ 63.059306] BUG: Bad rss-counter state mm:000000001b0f65fe type:MM_FILEPAGES val:33 [ 63.060387] BUG: Bad rss-counter state mm:000000001b0f65fe type:MM_ANONPAGES val:22 [ 63.518743] BUG: Bad rss-counter state mm:00000000045ca29d type:MM_FILEPAGES val:33 [ 63.520011] BUG: Bad rss-counter state mm:00000000045ca29d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:1485' (ECDSA) to the list of known hosts. 2023/06/20 20:07:15 fuzzer started 2023/06/20 20:07:16 dialing manager at localhost:36067 2023/06/20 20:07:16 checking machine... 2023/06/20 20:07:16 checking revisions... [ 64.262537] kmemleak: Automatic memory scanning thread ended 2023/06/20 20:07:16 testing simple program... [ 64.308589] cgroup: Unknown subsys name 'net' [ 64.352190] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 20:07:15 Registers: info registers vcpu 0 RAX=ffff88806c400000 RBX=00000000ebcaf3a4 RCX=ffff88806c979d20 RDX=0000000000000011 RSI=0000000000000001 RDI=00000000451b6043 RBP=ffff88800ca93f30 RSP=ffff8880146ff728 R8 =00000000fe8d6110 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6d53 R12=0000000000000001 R13=0000000000000d40 R14=ffff8880146ff790 R15=0000000000000011 RIP=ffffffff822704ed 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f6b02326900 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=00007f6b01844000 CR3=000000000d624000 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=000000000010a5b82fccd54c36d8a3f3 XMM01=0000000000119f107e8a42789393c4b7 XMM02=000000000011a018eff9b2d0a8fce9cb XMM03=000000000011a0e82c67c8bc2e329bc3 XMM04=d84286b40ba4352000000000000ae988 XMM05=5c4c9276fdaf9fb40000000000132de0 XMM06=4fda316b135da52b0000000000131bd0 XMM07=fb795ef6d65770560000000000122058 XMM08=2c67c8bc2e329bc3000000000011a088 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=0000000000000001 RCX=ffffffff815343f6 RDX=fffffbfff0ba7a6b RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=ffffffff84535d53 RSP=ffff888016b77b98 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000246 R13=0000000000000000 R14=ffff88800dbb2c28 R15=ffff88800dbb2be0 RIP=ffffffff815343fe RFL=00000047 [---Z-PC] 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 00007ff7f0abb900 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=00007ff7f1072618 CR3=000000000ef4c000 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=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