[ 29.333225] BUG: Bad rss-counter state mm:0000000022bb90eb type:MM_FILEPAGES val:33 [ 29.334264] BUG: Bad rss-counter state mm:0000000022bb90eb type:MM_ANONPAGES val:22 [ 29.468124] ================================================================== [ 29.469036] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.469977] Read of size 8 at addr ffff888019ce3880 by task sshd/219 [ 29.470805] [ 29.471063] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 29.471932] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.472907] Call Trace: [ 29.473249] [ 29.473552] dump_stack_lvl+0x91/0xf0 [ 29.474049] print_report+0xcc/0x620 [ 29.474537] ? __virt_addr_valid+0x102/0x340 [ 29.475090] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.475703] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.476319] kasan_report+0xbe/0xf0 [ 29.476797] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.477424] vma_interval_tree_remove+0xc75/0xec0 [ 29.478090] vma_prepare+0xc54/0x11a0 [ 29.478606] __split_vma+0x5af/0x950 [ 29.479124] ? __pfx___split_vma+0x10/0x10 [ 29.479691] ? find_held_lock+0x2c/0x110 [ 29.480258] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.480854] ? lock_is_held_type+0x9f/0x120 [ 29.481441] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.482114] ? mtree_range_walk+0x632/0x900 [ 29.482698] ? mas_walk+0x5c7/0x7c0 [ 29.483213] do_vmi_munmap+0x1f1/0x2b0 [ 29.483737] mmap_region+0x1f9/0x2660 [ 29.484264] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.484822] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.485597] ? __pfx_lock_acquire+0x10/0x10 [ 29.486175] ? __pfx_mmap_region+0x10/0x10 [ 29.486745] ? security_mmap_addr+0x7d/0xa0 [ 29.487331] ? get_unmapped_area+0x1f5/0x3f0 [ 29.487950] do_mmap+0x854/0xf00 [ 29.488426] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.488965] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.489595] ksys_mmap_pgoff+0x3af/0x500 [ 29.490153] do_syscall_64+0x3f/0x90 [ 29.490670] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.491386] RIP: 0033:0x7f1357963d82 [ 29.491878] 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 [ 29.494184] RSP: 002b:00007ffe57f5fbf8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.495159] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1357963d82 [ 29.496095] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1356d9d000 [ 29.497008] RBP: 00007f1356d9d000 R08: 0000000000000009 R09: 0000000000001000 [ 29.497939] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561d7801bb20 [ 29.498862] R13: 00007ffe57f5fc10 R14: 00007ffe57f5fc40 R15: 00007ffe57f5ffa0 [ 29.499788] [ 29.500108] [ 29.500344] Allocated by task 212: [ 29.500812] kasan_save_stack+0x22/0x50 [ 29.501363] kasan_set_track+0x25/0x30 [ 29.501901] __kasan_slab_alloc+0x59/0x70 [ 29.502466] kmem_cache_alloc+0x16b/0x370 [ 29.503028] vm_area_dup+0x20/0x160 [ 29.503528] __split_vma+0x170/0x950 [ 29.504031] split_vma+0xc6/0x110 [ 29.504502] mprotect_fixup+0x8d2/0xb30 [ 29.505001] do_mprotect_pkey+0x87e/0xd40 [ 29.505542] __x64_sys_mprotect+0x78/0xc0 [ 29.506061] do_syscall_64+0x3f/0x90 [ 29.506569] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.507297] [ 29.507535] Freed by task 210: [ 29.507963] kasan_save_stack+0x22/0x50 [ 29.508507] kasan_set_track+0x25/0x30 [ 29.509025] kasan_save_free_info+0x2b/0x50 [ 29.509602] __kasan_slab_free+0x10a/0x190 [ 29.510138] kmem_cache_free+0x10d/0x4d0 [ 29.510650] rcu_core+0x8c8/0x2860 [ 29.511096] __do_softirq+0x1b7/0x7d4 [ 29.511598] [ 29.511833] Last potentially related work creation: [ 29.512485] kasan_save_stack+0x22/0x50 [ 29.513038] __kasan_record_aux_stack+0x8e/0xa0 [ 29.513673] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.514401] remove_vma+0x139/0x170 [ 29.514893] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.515491] do_vmi_munmap+0x1f1/0x2b0 [ 29.516008] __vm_munmap+0x138/0x3a0 [ 29.516526] __x64_sys_munmap+0x59/0x80 [ 29.517069] do_syscall_64+0x3f/0x90 [ 29.517581] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.518282] [ 29.518518] The buggy address belongs to the object at ffff888019ce3828 [ 29.518518] which belongs to the cache vm_area_struct of size 168 [ 29.520129] The buggy address is located 88 bytes inside of [ 29.520129] freed 168-byte region [ffff888019ce3828, ffff888019ce38d0) [ 29.521667] [ 29.521906] The buggy address belongs to the physical page: [ 29.522616] page:0000000019512b37 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19ce3 [ 29.523794] memcg:ffff8880098ac501 [ 29.524259] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 29.525030] page_type: 0xffffffff() [ 29.525538] raw: 0100000000000200 ffff88800879fc80 ffffea00003a1c00 dead000000000003 [ 29.526536] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880098ac501 [ 29.527526] page dumped because: kasan: bad access detected [ 29.528257] [ 29.528499] Memory state around the buggy address: [ 29.529117] ffff888019ce3780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 29.530070] ffff888019ce3800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 29.531001] >ffff888019ce3880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 29.531922] ^ [ 29.532377] ffff888019ce3900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.533292] ffff888019ce3980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 [ 29.534222] ================================================================== [ 29.535285] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 31.504849] BUG: Bad rss-counter state mm:000000000f5a6edb type:MM_FILEPAGES val:33 [ 31.506045] BUG: Bad rss-counter state mm:000000000f5a6edb type:MM_ANONPAGES val:22 [ 31.918799] BUG: Bad rss-counter state mm:00000000ce5753fe type:MM_FILEPAGES val:33 [ 31.920004] BUG: Bad rss-counter state mm:00000000ce5753fe type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:61937' (ECDSA) to the list of known hosts. 2023/06/19 10:54:24 fuzzer started 2023/06/19 10:54:24 dialing manager at localhost:44161 2023/06/19 10:54:24 checking machine... 2023/06/19 10:54:24 checking revisions... [ 32.612910] kmemleak: Automatic memory scanning thread ended 2023/06/19 10:54:25 testing simple program... [ 32.663104] cgroup: Unknown subsys name 'net' [ 32.699798] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 10:54:18 Registers: info registers vcpu 0 RAX=0000000000000002 RBX=0000000000000001 RCX=ffffffff860d167c RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000001 RBP=ffff888008d7f9d0 RSP=ffff888008d7f908 R8 =ffffffff860d1680 R9 =ffff888008d7f9b8 R10=0000000000038001 R11=000000000000fdc6 R12=ffff888008d7f9d8 R13=ffff888008d7f9c0 R14=ffff888008d7fe60 R15=ffff888008d7f978 RIP=ffffffff81130bd6 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 0000000000000000 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=00007ffc319aaca8 CR3=0000000005482000 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=00007f1af01d851000005579a6135790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000039500 RCX=ffffffff8451879a RDX=0000000000000004 RSI=0000000000000008 RDI=ffff888008e2d694 RBP=ffff888008e57e98 RSP=ffff888008e57d68 R8 =0000000000000000 R9 =ffffed10011c5a38 R10=ffff888008e2d1c7 R11=0000000000000128 R12=ffff88806cf39500 R13=ffff888008e2d1c0 R14=ffff888008e2d1c0 R15=0000000000000001 RIP=ffffffff845178aa 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=00007f02df9bc700 CR3=000000000da8e000 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=2034323a34353a3031203931206e754a XMM01=657463656e6e6f63736944203a5d3832 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3832325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034323a34353a3031203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000