[ 30.751146] BUG: Bad rss-counter state mm:00000000b836f8a6 type:MM_FILEPAGES val:33 [ 30.752495] BUG: Bad rss-counter state mm:00000000b836f8a6 type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 31.119676] ================================================================== [ 31.120533] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.121411] Read of size 8 at addr ffff88801a1404e0 by task sshd/219 [ 31.122126] [ 31.122340] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.123145] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.124058] Call Trace: [ 31.124357] [ 31.124625] dump_stack_lvl+0x91/0xf0 [ 31.125090] print_report+0xcc/0x620 [ 31.125551] ? __virt_addr_valid+0x102/0x340 [ 31.126074] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.126655] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.127258] kasan_report+0xbe/0xf0 [ 31.127705] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.128292] vma_interval_tree_remove+0xc75/0xec0 [ 31.128860] vma_prepare+0xc54/0x11a0 [ 31.129317] __split_vma+0x5af/0x950 [ 31.129783] ? __pfx___split_vma+0x10/0x10 [ 31.130298] ? find_held_lock+0x2c/0x110 [ 31.130820] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.131388] ? lock_is_held_type+0x9f/0x120 [ 31.131925] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.132523] ? mtree_range_walk+0x632/0x900 [ 31.133074] ? mas_walk+0x5c7/0x7c0 [ 31.133548] do_vmi_munmap+0x1f1/0x2b0 [ 31.134045] mmap_region+0x1f9/0x2660 [ 31.134525] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.135033] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.135749] ? __pfx_lock_acquire+0x10/0x10 [ 31.136284] ? __pfx_mmap_region+0x10/0x10 [ 31.136822] ? security_mmap_addr+0x7d/0xa0 [ 31.137360] ? get_unmapped_area+0x1f5/0x3f0 [ 31.137905] do_mmap+0x854/0xf00 [ 31.138342] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.138831] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.139406] ksys_mmap_pgoff+0x3af/0x500 [ 31.139917] do_syscall_64+0x3f/0x90 [ 31.140395] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.141033] RIP: 0033:0x7f54eaa1ad82 [ 31.141479] 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 [ 31.143610] RSP: 002b:00007ffe8baf6938 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.144512] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f54eaa1ad82 [ 31.145349] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f54e9e54000 [ 31.146191] RBP: 00007f54e9e54000 R08: 0000000000000009 R09: 0000000000001000 [ 31.147033] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b0534b6d90 [ 31.147893] R13: 00007ffe8baf6950 R14: 00007ffe8baf6980 R15: 00007ffe8baf6ce0 [ 31.148735] [ 31.149024] [ 31.149236] Allocated by task 205: [ 31.149661] kasan_save_stack+0x22/0x50 [ 31.150155] kasan_set_track+0x25/0x30 [ 31.150643] __kasan_slab_alloc+0x59/0x70 [ 31.151175] kmem_cache_alloc+0x16b/0x370 [ 31.151683] vm_area_dup+0x20/0x160 [ 31.152129] __split_vma+0x170/0x950 [ 31.152595] split_vma+0xc6/0x110 [ 31.153027] mprotect_fixup+0x8d2/0xb30 [ 31.153523] do_mprotect_pkey+0x87e/0xd40 [ 31.154034] __x64_sys_mprotect+0x78/0xc0 [ 31.154640] do_syscall_64+0x3f/0x90 [ 31.155131] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.155767] [ 31.155983] Freed by task 205: [ 31.156367] kasan_save_stack+0x22/0x50 [ 31.156862] kasan_set_track+0x25/0x30 [ 31.157357] kasan_save_free_info+0x2b/0x50 [ 31.157900] __kasan_slab_free+0x10a/0x190 [ 31.158445] kmem_cache_free+0x10d/0x4d0 [ 31.158949] rcu_core+0x8c8/0x2860 [ 31.159416] __do_softirq+0x1b7/0x7d4 [ 31.159889] [ 31.160104] Last potentially related work creation: [ 31.160692] kasan_save_stack+0x22/0x50 [ 31.161193] __kasan_record_aux_stack+0x8e/0xa0 [ 31.161758] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.162395] remove_vma+0x139/0x170 [ 31.162839] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.163420] do_vmi_munmap+0x1f1/0x2b0 [ 31.163897] __vm_munmap+0x138/0x3a0 [ 31.164365] __x64_sys_munmap+0x59/0x80 [ 31.164855] do_syscall_64+0x3f/0x90 [ 31.165326] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.165957] [ 31.166163] The buggy address belongs to the object at ffff88801a140488 [ 31.166163] which belongs to the cache vm_area_struct of size 168 [ 31.167629] The buggy address is located 88 bytes inside of [ 31.167629] freed 168-byte region [ffff88801a140488, ffff88801a140530) [ 31.169036] [ 31.169248] The buggy address belongs to the physical page: [ 31.169910] page:0000000004957a6d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a140 [ 31.170989] memcg:ffff888019e0fc01 [ 31.171426] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.172087] page_type: 0xffffffff() [ 31.172111] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 31.172138] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888019e0fc01 [ 31.172153] page dumped because: kasan: bad access detected [ 31.172163] [ 31.172167] Memory state around the buggy address: [ 31.172178] ffff88801a140380: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.172197] ffff88801a140400: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 31.172215] >ffff88801a140480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.172229] ^ [ 31.172243] ffff88801a140500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb [ 31.172262] ffff88801a140580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.172276] ================================================================== [ 31.172427] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 33.035375] BUG: Bad rss-counter state mm:00000000faabb22b type:MM_FILEPAGES val:33 [ 33.036677] BUG: Bad rss-counter state mm:00000000faabb22b type:MM_ANONPAGES val:22 [ 33.429288] BUG: Bad rss-counter state mm:00000000ca37c95c type:MM_FILEPAGES val:33 [ 33.430415] BUG: Bad rss-counter state mm:00000000ca37c95c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:33039' (ECDSA) to the list of known hosts. [ 33.548170] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 33.549548] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 33.550433] CPU: 1 PID: 237 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230620 #1 [ 33.551469] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 33.552426] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 33.553076] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 [ 33.555173] RSP: 0018:ffff88801650f8a8 EFLAGS: 00010212 [ 33.555803] RAX: ffff88801b0172c8 RBX: ffff88801bcabdd8 RCX: 1ffff110037957bb [ 33.556638] RDX: 0000000000000001 RSI: ffff88801b0172c8 RDI: ffff88801bcabdd8 [ 33.557478] RBP: ffff88801a155a38 R08: 0000000000000008 R09: 0000000000000000 [ 33.558309] R10: 0000000000000000 R11: 00000000000b6a61 R12: 0000000000000000 [ 33.559147] R13: dffffc0000000000 R14: ffff88801650f988 R15: ffffffff816e6340 [ 33.559975] FS: 00007fa72a3bc900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 [ 33.560908] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.561592] CR2: 00007fa72a372000 CR3: 0000000009702000 CR4: 0000000000350ee0 [ 33.562434] Call Trace: [ 33.562747] [ 33.563028] ? die_addr+0x3c/0xa0 [ 33.563488] ? exc_general_protection+0x125/0x220 [ 33.564097] ? asm_exc_general_protection+0x26/0x30 [ 33.564725] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 33.565457] ? __rb_insert_augmented+0x78/0x8b0 [ 33.566041] ? vma_interval_tree_insert+0x23a/0x400 [ 33.566656] vma_prepare+0xa1a/0x11a0 [ 33.567137] __split_vma+0x5af/0x950 [ 33.567607] ? __pfx___split_vma+0x10/0x10 [ 33.568128] ? lock_acquire+0x434/0x4c0 [ 33.568624] do_vmi_align_munmap+0x361/0x11f0 [ 33.569184] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 33.569785] ? mtree_range_walk+0x632/0x900 [ 33.570335] ? mas_walk+0x5c7/0x7c0 [ 33.570807] do_vmi_munmap+0x1f1/0x2b0 [ 33.571311] mmap_region+0x1f9/0x2660 [ 33.571790] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 33.572490] ? __pfx_lock_acquire+0x10/0x10 [ 33.573023] ? __pfx_mmap_region+0x10/0x10 [ 33.573548] ? security_mmap_addr+0x7d/0xa0 [ 33.574068] ? get_unmapped_area+0x1f5/0x3f0 [ 33.574615] do_mmap+0x854/0xf00 [ 33.575048] vm_mmap_pgoff+0x1a6/0x3a0 [ 33.575561] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 33.576119] ksys_mmap_pgoff+0x3af/0x500 [ 33.576625] do_syscall_64+0x3f/0x90 [ 33.577099] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.577740] RIP: 0033:0x7fa72af4ed82 [ 33.578192] 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 [ 33.580302] RSP: 002b:00007ffe9a16c638 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 33.581188] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa72af4ed82 [ 33.582032] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa72a36d000 [ 33.582872] RBP: 00007fa72a36d000 R08: 0000000000000008 R09: 0000000000001000 [ 33.583681] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a96d9e1fe0 [ 33.584474] R13: 00007ffe9a16c650 R14: 00007ffe9a16c680 R15: 00007ffe9a16c9e0 [ 33.585278] [ 33.585553] Modules linked in: [ 33.585981] ---[ end trace 0000000000000000 ]--- [ 33.586534] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 33.587165] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 [ 33.589562] RSP: 0018:ffff88801650f8a8 EFLAGS: 00010212 [ 33.590401] RAX: ffff88801b0172c8 RBX: ffff88801bcabdd8 RCX: 1ffff110037957bb [ 33.591469] RDX: 0000000000000001 RSI: ffff88801b0172c8 RDI: ffff88801bcabdd8 [ 33.592464] RBP: ffff88801a155a38 R08: 0000000000000008 R09: 0000000000000000 [ 33.593384] R10: 0000000000000000 R11: 00000000000b6a61 R12: 0000000000000000 [ 33.594173] R13: dffffc0000000000 R14: ffff88801650f988 R15: ffffffff816e6340 [ 33.595066] FS: 00007fa72a3bc900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 [ 33.596152] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.596923] CR2: 00007fa72a372000 CR3: 0000000009702000 CR4: 0000000000350ee0 VM DIAGNOSIS: 05:13:36 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88800f062f00 RCX=ffffffff811fbf63 RDX=ffff888017dbd1c0 RSI=0000000000000000 RDI=0000000000000001 RBP=ffff888017dbd1c0 RSP=ffff888015eb7e10 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000001 R11=00000000000b6a61 R12=ffff888017dbda38 R13=0000000000000001 R14=1ffff11002bd6fc5 R15=0000000000000000 RIP=ffffffff811fbf63 RFL=00000293 [--S-A-C] 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 00007fc428e45900 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=00007ffc3439e000 CR3=000000000c78c000 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=0000000000000000ffff000000000000 XMM02=2f00646f6874656d5f74707972636e65 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ff00ffffffffffffffffffffffffffff XMM08=20002020202020200020202020202020 XMM09=0000ffffffffffffffffffffffffffff XMM10=00002020202020200020202020202020 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff81289068 RBX=ffffffff813ad470 RCX=0000000000000001 RDX=1ffff1100d9e135e RSI=ffffffff81289068 RDI=ffff88806cf09b60 RBP=ffff88806cf09b30 RSP=ffff88806cf09a90 R8 =0000000000000001 R9 =ffff88806cf09ad8 R10=0000000000038001 R11=000000000000ba8f R12=ffff88806cf09b60 R13=0000000000000000 R14=ffff888008d951c0 R15=ffff8880102f68d0 RIP=ffffffff84538440 RFL=00000282 [--S----] 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=00007f2615ef46d0 CR3=000000000c40c000 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=2036333a33313a3530203132206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036333a33313a3530203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000