syzkaller login: [ 33.392541] BUG: Bad rss-counter state mm:00000000e9d8d791 type:MM_FILEPAGES val:33 [ 33.393772] BUG: Bad rss-counter state mm:00000000e9d8d791 type:MM_ANONPAGES val:22 [ 33.564599] ================================================================== [ 33.565577] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 33.566628] Read of size 8 at addr ffff88800e3504e0 by task sshd/219 [ 33.567553] [ 33.567793] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 33.568729] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 33.569804] Call Trace: [ 33.570153] <TASK> [ 33.570459] dump_stack_lvl+0x91/0xf0 [ 33.570991] print_report+0xcc/0x620 [ 33.571509] ? __virt_addr_valid+0x102/0x340 [ 33.572101] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.572797] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.573456] kasan_report+0xbe/0xf0 [ 33.573983] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.574670] vma_interval_tree_remove+0xc75/0xec0 [ 33.575336] vma_prepare+0xc54/0x11a0 [ 33.575868] __split_vma+0x5af/0x950 [ 33.576401] ? __pfx___split_vma+0x10/0x10 [ 33.576988] ? find_held_lock+0x2c/0x110 [ 33.577574] do_vmi_align_munmap+0x2ba/0x11f0 [ 33.578199] ? lock_is_held_type+0x9f/0x120 [ 33.578796] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 33.579473] ? mtree_range_walk+0x632/0x900 [ 33.580083] ? mas_walk+0x5c7/0x7c0 [ 33.580619] do_vmi_munmap+0x1f1/0x2b0 [ 33.581166] mmap_region+0x1f9/0x2660 [ 33.581701] ? vm_mmap_pgoff+0x15c/0x3a0 [ 33.582272] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 33.583065] ? __pfx_lock_acquire+0x10/0x10 [ 33.583656] ? __pfx_mmap_region+0x10/0x10 [ 33.584263] ? security_mmap_addr+0x7d/0xa0 [ 33.584851] ? get_unmapped_area+0x1f5/0x3f0 [ 33.585461] do_mmap+0x854/0xf00 [ 33.585943] vm_mmap_pgoff+0x1a6/0x3a0 [ 33.586494] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 33.587116] ksys_mmap_pgoff+0x3af/0x500 [ 33.587678] do_syscall_64+0x3f/0x90 [ 33.588219] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.588937] RIP: 0033:0x7fb84cf6ed82 [ 33.589444] 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 [ 33.591820] RSP: 002b:00007ffc962f1078 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 33.592814] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb84cf6ed82 [ 33.593755] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb84c3a8000 [ 33.594696] RBP: 00007fb84c3a8000 R08: 0000000000000009 R09: 0000000000001000 [ 33.595635] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562eff317ec0 [ 33.596585] R13: 00007ffc962f1090 R14: 00007ffc962f10c0 R15: 00007ffc962f1420 [ 33.597539] </TASK> [ 33.597862] [ 33.598097] Allocated by task 211: [ 33.598576] kasan_save_stack+0x22/0x50 [ 33.599131] kasan_set_track+0x25/0x30 [ 33.599678] __kasan_slab_alloc+0x59/0x70 [ 33.600262] kmem_cache_alloc+0x16b/0x370 [ 33.600834] vm_area_dup+0x20/0x160 [ 33.601336] __split_vma+0x170/0x950 [ 33.601851] split_vma+0xc6/0x110 [ 33.602336] mprotect_fixup+0x8d2/0xb30 [ 33.602892] do_mprotect_pkey+0x87e/0xd40 [ 33.603467] __x64_sys_mprotect+0x78/0xc0 [ 33.604041] do_syscall_64+0x3f/0x90 [ 33.604576] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.605287] [ 33.605526] Freed by task 206: [ 33.605955] kasan_save_stack+0x22/0x50 [ 33.606516] kasan_set_track+0x25/0x30 [ 33.607068] kasan_save_free_info+0x2b/0x50 [ 33.607668] __kasan_slab_free+0x10a/0x190 [ 33.608257] kmem_cache_free+0x10d/0x4d0 [ 33.608820] rcu_core+0x8c8/0x2860 [ 33.609316] __do_softirq+0x1b7/0x7d4 [ 33.609842] [ 33.610081] Last potentially related work creation: [ 33.610727] kasan_save_stack+0x22/0x50 [ 33.611287] __kasan_record_aux_stack+0x8e/0xa0 [ 33.611920] __call_rcu_common.constprop.0+0x6a/0xb90 [ 33.612649] remove_vma+0x139/0x170 [ 33.613152] do_vmi_align_munmap+0xd4a/0x11f0 [ 33.613767] do_vmi_munmap+0x1f1/0x2b0 [ 33.614305] __vm_munmap+0x138/0x3a0 [ 33.614819] __x64_sys_munmap+0x59/0x80 [ 33.615375] do_syscall_64+0x3f/0x90 [ 33.615901] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.616618] [ 33.616871] Second to last potentially related work creation: [ 33.617631] kasan_save_stack+0x22/0x50 [ 33.618190] __kasan_record_aux_stack+0x8e/0xa0 [ 33.618830] __call_rcu_common.constprop.0+0x6a/0xb90 [ 33.619546] remove_vma+0x139/0x170 [ 33.620046] do_vmi_align_munmap+0xd4a/0x11f0 [ 33.620666] do_vmi_munmap+0x1f1/0x2b0 [ 33.621188] mmap_region+0x1f9/0x2660 [ 33.621714] do_mmap+0x854/0xf00 [ 33.622184] vm_mmap_pgoff+0x1a6/0x3a0 [ 33.622708] ksys_mmap_pgoff+0x3af/0x500 [ 33.623249] do_syscall_64+0x3f/0x90 [ 33.623767] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.624470] [ 33.624700] The buggy address belongs to the object at ffff88800e350488 [ 33.624700] which belongs to the cache vm_area_struct of size 168 [ 33.626280] The buggy address is located 88 bytes inside of [ 33.626280] freed 168-byte region [ffff88800e350488, ffff88800e350530) [ 33.627801] [ 33.628035] The buggy address belongs to the physical page: [ 33.628749] page:00000000d9d0605f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe350 [ 33.629913] memcg:ffff88800dbe2b01 [ 33.630371] flags: 0x100000000000200(slab|node=0|zone=1) [ 33.631080] page_type: 0xffffffff() [ 33.631584] raw: 0100000000000200 ffff88800879fc80 ffffea00003ad640 dead000000000006 [ 33.632619] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dbe2b01 [ 33.633626] page dumped because: kasan: bad access detected [ 33.634360] [ 33.634598] Memory state around the buggy address: [ 33.635226] ffff88800e350380: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 [ 33.636149] ffff88800e350400: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 33.637064] >ffff88800e350480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.637982] ^ [ 33.638798] ffff88800e350500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 [ 33.639709] ffff88800e350580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 33.640627] ================================================================== [ 33.642102] Disabling lock debugging due to kernel taint [ 35.996111] BUG: Bad rss-counter state mm:00000000a498c39f type:MM_FILEPAGES val:33 [ 35.997195] BUG: Bad rss-counter state mm:00000000a498c39f type:MM_ANONPAGES val:22 [ 36.493605] BUG: Bad rss-counter state mm:00000000eb969178 type:MM_FILEPAGES val:33 [ 36.494818] BUG: Bad rss-counter state mm:00000000eb969178 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:64344' (ECDSA) to the list of known hosts. 2023/06/20 01:16:57 fuzzer started 2023/06/20 01:16:57 dialing manager at localhost:44161 2023/06/20 01:16:57 checking machine... 2023/06/20 01:16:57 checking revisions... [ 37.264916] kmemleak: Automatic memory scanning thread ended 2023/06/20 01:16:57 testing simple program... [ 37.308912] cgroup: Unknown subsys name 'net' [ 37.354213] cgroup: Unknown subsys name 'rlimit' executing program [ 41.439532] general protection fault, probably for non-canonical address 0xe0b57c23e000001d: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 41.440857] KASAN: maybe wild-memory-access in range [0x05ac011f000000e8-0x05ac011f000000ef] [ 41.441787] CPU: 0 PID: 264 Comm: cron Tainted: G B 6.4.0-rc7-next-20230619 #1 [ 41.442756] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 41.443669] RIP: 0010:vma_interval_tree_insert+0x114/0x400 [ 41.444340] Code: fa 48 c1 ea 03 80 3c 2a 00 0f 85 52 02 00 00 49 8b 17 48 85 d2 74 7f 48 89 d3 e8 e7 9c dd ff 48 8d 7b 18 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 23 02 00 00 4c 8b 7b 18 4c 89 e6 4c 89 ff e8 d3 [ 41.446335] RSP: 0018:ffff88800cbb78a8 EFLAGS: 00010217 [ 41.446939] RAX: 00b58023e000001d RBX: 05ac011f000000d5 RCX: 0000000000000000 [ 41.447743] RDX: ffff88801024d1c0 RSI: ffffffff816e6af9 RDI: 05ac011f000000ed [ 41.448565] RBP: dffffc0000000000 R08: 0000000000000006 R09: 0000000000000003 [ 41.449375] R10: 0000000000000000 R11: 00000000000b6996 R12: 0000000000000005 [ 41.450165] R13: 0000000000000003 R14: ffff88800e49b3a0 R15: ffff88800e4b0008 [ 41.450965] FS: 00007ff9c52d9840(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 41.451856] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.452518] CR2: 00007ff9c4eab000 CR3: 000000001675e000 CR4: 0000000000350ef0 [ 41.453320] Call Trace: [ 41.453619] <TASK> [ 41.453890] ? die_addr+0x3c/0xa0 [ 41.454305] ? exc_general_protection+0x125/0x220 [ 41.454883] ? asm_exc_general_protection+0x26/0x30 [ 41.455474] ? vma_interval_tree_insert+0x109/0x400 [ 41.456053] ? vma_interval_tree_insert+0x114/0x400 [ 41.456640] ? vma_interval_tree_insert+0x109/0x400 [ 41.457219] vma_prepare+0xa1a/0x11a0 [ 41.457673] __split_vma+0x5af/0x950 [ 41.458120] ? __pfx___split_vma+0x10/0x10 [ 41.458620] ? lock_acquire+0x434/0x4c0 [ 41.459088] do_vmi_align_munmap+0x361/0x11f0 [ 41.459626] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 41.460197] ? mtree_range_walk+0x632/0x900 [ 41.460734] ? mas_walk+0x5c7/0x7c0 [ 41.461179] do_vmi_munmap+0x1f1/0x2b0 [ 41.461646] mmap_region+0x1f9/0x2660 [ 41.462104] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 41.462786] ? __pfx_lock_acquire+0x10/0x10 [ 41.463289] ? __pfx_mmap_region+0x10/0x10 [ 41.463784] ? security_mmap_addr+0x7d/0xa0 [ 41.464285] ? get_unmapped_area+0x1f5/0x3f0 [ 41.464806] do_mmap+0x854/0xf00 [ 41.465219] vm_mmap_pgoff+0x1a6/0x3a0 [ 41.465683] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 41.466208] ksys_mmap_pgoff+0x3af/0x500 [ 41.466703] do_syscall_64+0x3f/0x90 [ 41.467153] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 41.467756] RIP: 0033:0x7ff9c55fbd82 [ 41.468189] 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 [ 41.470182] RSP: 002b:00007ffdb3602688 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 41.471032] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007ff9c55fbd82 [ 41.471828] RDX: 0000000000000005 RSI: 0000000000002000 RDI: 00007ff9c4ea5000 [ 41.472665] RBP: 00007ff9c4ea5000 R08: 0000000000000008 R09: 0000000000001000 [ 41.473494] R10: 0000000000000812 R11: 0000000000000206 R12: 00005601d2d7b550 [ 41.474323] R13: 00007ffdb36026a0 R14: 00007ffdb36026d0 R15: 00007ffdb3602a30 [ 41.475190] </TASK> [ 41.475474] Modules linked in: [ 41.475903] ---[ end trace 0000000000000000 ]--- [ 41.476445] RIP: 0010:vma_interval_tree_insert+0x114/0x400 [ 41.477118] Code: fa 48 c1 ea 03 80 3c 2a 00 0f 85 52 02 00 00 49 8b 17 48 85 d2 74 7f 48 89 d3 e8 e7 9c dd ff 48 8d 7b 18 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 23 02 00 00 4c 8b 7b 18 4c 89 e6 4c 89 ff e8 d3 [ 41.479129] RSP: 0018:ffff88800cbb78a8 EFLAGS: 00010217 [ 41.479750] RAX: 00b58023e000001d RBX: 05ac011f000000d5 RCX: 0000000000000000 [ 41.480577] RDX: ffff88801024d1c0 RSI: ffffffff816e6af9 RDI: 05ac011f000000ed [ 41.481370] RBP: dffffc0000000000 R08: 0000000000000006 R09: 0000000000000003 [ 41.482184] R10: 0000000000000000 R11: 00000000000b6996 R12: 0000000000000005 [ 41.482994] R13: 0000000000000003 R14: ffff88800e49b3a0 R15: ffff88800e4b0008 [ 41.483808] FS: 00007ff9c52d9840(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 41.484728] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.485383] CR2: 00007ff9c4eab000 CR3: 000000001675e000 CR4: 0000000000350ef0 executing program executing program VM DIAGNOSIS: 01:16:52 Registers: info registers vcpu 0 RAX=1ffff11001b49fb1 RBX=ffff88800da4fd88 RCX=0000000000000000 RDX=0000000000000001 RSI=ffff88800da4fda8 RDI=ffff88800c55ee40 RBP=ffff88800c55ee40 RSP=ffff88800da4fc80 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=ffff88800c55ee58 R13=ffff88800c55ee60 R14=dffffc0000000000 R15=ffff88800da4fd88 RIP=ffffffff8199b712 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 00007f16f97c5900 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=00007f16f8c40fe0 CR3=000000000b3ac000 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=a385c069c4f8af8f7646424e662399ba XMM02=2c67c8bc2e329bc30000000000121a00 XMM03=fb795ef6d65770560000000000124308 XMM04=3cc899d42d88791b00000000000ae988 XMM05=19e9129bd510f23500000000001358a8 XMM06=d9ef6cd2988f32b00000000000134710 XMM07=e042d86d42eb936e0000000000124588 XMM08=f77bab6e50d58d180000000000121a60 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 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=00007ffc988f0c18 CR3=0000000009636000 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=36313a3130203032206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3932325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320363832 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000