syzkaller login: [ 33.731413] BUG: Bad rss-counter state mm:000000001d36ad4a type:MM_FILEPAGES val:33 [ 33.732212] BUG: Bad rss-counter state mm:000000001d36ad4a type:MM_ANONPAGES val:22 [ 33.877248] ================================================================== [ 33.878292] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 33.879348] Read of size 8 at addr ffff8880138b1310 by task sshd/220 [ 33.880328] [ 33.880572] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 33.881540] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 33.882662] Call Trace: [ 33.883024] <TASK> [ 33.883341] dump_stack_lvl+0x91/0xf0 [ 33.883895] print_report+0xcc/0x620 [ 33.884439] ? __virt_addr_valid+0x102/0x340 [ 33.885052] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.885763] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.886465] kasan_report+0xbe/0xf0 [ 33.887009] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.887740] vma_interval_tree_remove+0xc75/0xec0 [ 33.888431] vma_prepare+0xc54/0x11a0 [ 33.888981] __split_vma+0x5af/0x950 [ 33.889528] ? __pfx___split_vma+0x10/0x10 [ 33.890135] ? find_held_lock+0x2c/0x110 [ 33.890736] do_vmi_align_munmap+0x2ba/0x11f0 [ 33.891379] ? lock_is_held_type+0x9f/0x120 [ 33.892004] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 33.892709] ? mtree_range_walk+0x632/0x900 [ 33.893338] ? mas_walk+0x5c7/0x7c0 [ 33.893891] do_vmi_munmap+0x1f1/0x2b0 [ 33.894459] mmap_region+0x1f9/0x2660 [ 33.895034] ? vm_mmap_pgoff+0x15c/0x3a0 [ 33.895624] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 33.896443] ? __pfx_lock_acquire+0x10/0x10 [ 33.897066] ? __pfx_mmap_region+0x10/0x10 [ 33.897694] ? security_mmap_addr+0x7d/0xa0 [ 33.898304] ? get_unmapped_area+0x1f5/0x3f0 [ 33.898939] do_mmap+0x854/0xf00 [ 33.899452] vm_mmap_pgoff+0x1a6/0x3a0 [ 33.900017] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 33.900673] ksys_mmap_pgoff+0x3af/0x500 [ 33.901261] do_syscall_64+0x3f/0x90 [ 33.901825] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.902557] RIP: 0033:0x7faecd2abd82 [ 33.903077] 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 [ 33.905529] RSP: 002b:00007fff5eb57068 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 33.906571] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007faecd2abd82 [ 33.907556] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007faecc6e5000 [ 33.908534] RBP: 00007faecc6e5000 R08: 0000000000000009 R09: 0000000000001000 [ 33.909531] R10: 0000000000000812 R11: 0000000000000206 R12: 000055cfc35bbf70 [ 33.910510] R13: 00007fff5eb57080 R14: 00007fff5eb570b0 R15: 00007fff5eb57410 [ 33.911507] </TASK> [ 33.911844] [ 33.912094] Allocated by task 213: [ 33.912594] kasan_save_stack+0x22/0x50 [ 33.913171] kasan_set_track+0x25/0x30 [ 33.913754] __kasan_slab_alloc+0x59/0x70 [ 33.914355] kmem_cache_alloc+0x16b/0x370 [ 33.914946] vm_area_dup+0x20/0x160 [ 33.915465] __split_vma+0x170/0x950 [ 33.916005] split_vma+0xc6/0x110 [ 33.916505] mprotect_fixup+0x8d2/0xb30 [ 33.917083] do_mprotect_pkey+0x87e/0xd40 [ 33.917701] __x64_sys_mprotect+0x78/0xc0 [ 33.918307] do_syscall_64+0x3f/0x90 [ 33.918850] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.919580] [ 33.919828] Freed by task 213: [ 33.920274] kasan_save_stack+0x22/0x50 [ 33.920862] kasan_set_track+0x25/0x30 [ 33.921427] kasan_save_free_info+0x2b/0x50 [ 33.922064] __kasan_slab_free+0x10a/0x190 [ 33.922680] kmem_cache_free+0x10d/0x4d0 [ 33.923269] rcu_core+0x8c8/0x2860 [ 33.923780] __do_softirq+0x1b7/0x7d4 [ 33.924333] [ 33.924581] Last potentially related work creation: [ 33.925256] kasan_save_stack+0x22/0x50 [ 33.925851] __kasan_record_aux_stack+0x8e/0xa0 [ 33.926510] __call_rcu_common.constprop.0+0x6a/0xb90 [ 33.927246] remove_vma+0x139/0x170 [ 33.927761] do_vmi_align_munmap+0xd4a/0x11f0 [ 33.928406] do_vmi_munmap+0x1f1/0x2b0 [ 33.928974] __vm_munmap+0x138/0x3a0 [ 33.929520] __x64_sys_munmap+0x59/0x80 [ 33.930092] do_syscall_64+0x3f/0x90 [ 33.930642] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.931371] [ 33.931618] The buggy address belongs to the object at ffff8880138b12b8 [ 33.931618] which belongs to the cache vm_area_struct of size 168 [ 33.933303] The buggy address is located 88 bytes inside of [ 33.933303] freed 168-byte region [ffff8880138b12b8, ffff8880138b1360) [ 33.934931] [ 33.935180] The buggy address belongs to the physical page: [ 33.935936] page:0000000057487d94 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x138b1 [ 33.937198] memcg:ffff888017bf3301 [ 33.937693] flags: 0x100000000000200(slab|node=0|zone=1) [ 33.938444] page_type: 0xffffffff() [ 33.938974] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 33.940035] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888017bf3301 [ 33.941090] page dumped because: kasan: bad access detected [ 33.941869] [ 33.942115] Memory state around the buggy address: [ 33.942790] ffff8880138b1200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 33.943785] ffff8880138b1280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 33.944770] >ffff8880138b1300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 33.945766] ^ [ 33.946299] ffff8880138b1380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 33.947292] ffff8880138b1400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 33.948275] ================================================================== [ 33.949600] Disabling lock debugging due to kernel taint [ 36.383873] BUG: Bad rss-counter state mm:00000000d36414eb type:MM_FILEPAGES val:33 [ 36.385006] BUG: Bad rss-counter state mm:00000000d36414eb type:MM_ANONPAGES val:22 [ 36.956711] BUG: Bad rss-counter state mm:000000001090864c type:MM_FILEPAGES val:33 [ 36.957942] BUG: Bad rss-counter state mm:000000001090864c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:9777' (ECDSA) to the list of known hosts. 2023/06/19 11:16:55 fuzzer started 2023/06/19 11:16:55 dialing manager at localhost:44161 2023/06/19 11:16:55 checking machine... 2023/06/19 11:16:55 checking revisions... [ 37.621499] kmemleak: Automatic memory scanning thread ended 2023/06/19 11:16:55 testing simple program... [ 37.676270] cgroup: Unknown subsys name 'net' [ 37.738019] cgroup: Unknown subsys name 'rlimit' executing program [ 43.428818] general protection fault, probably for non-canonical address 0xe0f6bc234000000c: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 43.430431] KASAN: maybe wild-memory-access in range [0x07b6011a00000060-0x07b6011a00000067] [ 43.431528] CPU: 1 PID: 264 Comm: cron Tainted: G B 6.4.0-rc7-next-20230619 #1 [ 43.432646] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 43.433744] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 43.434458] Code: 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 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 43.436784] RSP: 0018:ffff88800c5878a8 EFLAGS: 00010217 [ 43.437490] RAX: ffff8880193bdef8 RBX: ffff888016916698 RCX: ffffffff844ce9f9 [ 43.438426] RDX: 00f6c0234000000c RSI: 0000000000000008 RDI: ffff8880137e8c88 [ 43.439359] RBP: ffff888015aab780 R08: ffff8880137e8c88 R09: 0000000000000000 [ 43.440286] R10: 0000000000000000 R11: 00000000000b6996 R12: ffff8880137e8c80 [ 43.441254] R13: dffffc0000000000 R14: 07b6011a00000067 R15: ffffffff816e61c0 [ 43.442291] FS: 00007fc37fde7840(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 [ 43.443372] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.444171] CR2: 000056309afd22e8 CR3: 000000000e8b0000 CR4: 0000000000350ee0 [ 43.445140] Call Trace: [ 43.445504] <TASK> [ 43.445833] ? die_addr+0x3c/0xa0 [ 43.446333] ? exc_general_protection+0x125/0x220 [ 43.447031] ? asm_exc_general_protection+0x26/0x30 [ 43.447739] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 43.448574] ? __rb_insert_augmented+0x5e9/0x8b0 [ 43.449247] ? __rb_insert_augmented+0x9d/0x8b0 [ 43.449945] ? __rb_insert_augmented+0x5e9/0x8b0 [ 43.450591] vma_prepare+0xa1a/0x11a0 [ 43.451114] __split_vma+0x5af/0x950 [ 43.451625] ? __pfx___split_vma+0x10/0x10 [ 43.452194] ? lock_acquire+0x434/0x4c0 [ 43.452733] do_vmi_align_munmap+0x361/0x11f0 [ 43.453342] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 43.454027] ? mtree_range_walk+0x632/0x900 [ 43.454623] ? mas_walk+0x5c7/0x7c0 [ 43.455134] do_vmi_munmap+0x1f1/0x2b0 [ 43.455664] mmap_region+0x1f9/0x2660 [ 43.456183] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 43.456953] ? __pfx_lock_acquire+0x10/0x10 [ 43.457524] ? __pfx_mmap_region+0x10/0x10 [ 43.458106] ? security_mmap_addr+0x7d/0xa0 [ 43.458681] ? get_unmapped_area+0x1f5/0x3f0 [ 43.459275] do_mmap+0x854/0xf00 [ 43.459760] vm_mmap_pgoff+0x1a6/0x3a0 [ 43.460311] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 43.460932] ksys_mmap_pgoff+0x3af/0x500 [ 43.461495] do_syscall_64+0x3f/0x90 [ 43.462032] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 43.462746] RIP: 0033:0x7fc380109d82 [ 43.463252] 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 [ 43.465610] RSP: 002b:00007ffd16ab6968 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 43.466637] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fc380109d82 [ 43.467614] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fc37f9c3000 [ 43.468576] RBP: 00007fc37f9c3000 R08: 0000000000000009 R09: 0000000000001000 [ 43.469545] R10: 0000000000000812 R11: 0000000000000206 R12: 000056309afd1e00 [ 43.470525] R13: 00007ffd16ab6980 R14: 00007ffd16ab69b0 R15: 00007ffd16ab6d10 [ 43.471504] </TASK> [ 43.471844] Modules linked in: [ 43.472617] ---[ end trace 0000000000000000 ]--- [ 43.473280] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 43.474273] Code: 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 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 43.476982] RSP: 0018:ffff88800c5878a8 EFLAGS: 00010217 [ 43.477948] RAX: ffff8880193bdef8 RBX: ffff888016916698 RCX: ffffffff844ce9f9 [ 43.479073] RDX: 00f6c0234000000c RSI: 0000000000000008 RDI: ffff8880137e8c88 [ 43.480142] RBP: ffff888015aab780 R08: ffff8880137e8c88 R09: 0000000000000000 [ 43.481213] R10: 0000000000000000 R11: 00000000000b6996 R12: ffff8880137e8c80 [ 43.482298] R13: dffffc0000000000 R14: 07b6011a00000067 R15: ffffffff816e61c0 [ 43.483367] FS: 00007fc37fde7840(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 [ 43.484583] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.485362] CR2: 000056309afd22e8 CR3: 000000000e8b0000 CR4: 0000000000350ee0 executing program executing program VM DIAGNOSIS: 11:16:52 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff8880198a00e4 RCX=1ffff11003314008 RDX=0000000000000004 RSI=ffff888017803e44 RDI=ffff8880198a00dc RBP=0000000000000000 RSP=ffff88800e677c20 R8 =0000000000000001 R9 =ffff8880198a00dc R10=ffff8880198a0093 R11=00000000000b6996 R12=dffffc0000000000 R13=ffff8880198a00ec R14=ffff8880198a00dc R15=ffff8880198a0000 RIP=ffffffff844d2b8a RFL=00000297 [--S-APC] 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 00007f8cd6108900 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=00007ffc18f43000 CR3=000000000dc22000 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=ffffffffffffffffffff000000000000 XMM01=000000000000003635006b6f6c6c756e XMM02=62003d73646e756f7200323135616873 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000202020 XMM09=ff0000ffffffffffff00000000ffffff XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000006985 RBX=ffffffff85d3d010 RCX=1ffffffff0ba77f5 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff888008d755b4 RBP=ffff88806cf3a2d8 RSP=ffff88806cf09c58 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=0000001774daf3e4 R12=ffffffff85d3bf9c R13=ffff88806cf3a2c0 R14=1ffff1100d9e139c R15=0000000000000000 RIP=ffffffff8137cbd9 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=00007fece0050560 CR3=000000000e46a000 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=2034353a36313a3131203931206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034353a36313a3131203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000