[ 23.729381] BUG: Bad rss-counter state mm:00000000a505bbcf type:MM_FILEPAGES val:33 [ 23.730992] BUG: Bad rss-counter state mm:00000000a505bbcf type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 24.067848] ================================================================== [ 24.068776] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.069713] Read of size 8 at addr ffff888009553140 by task sshd/221 [ 24.070471] [ 24.070688] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 24.071549] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.072548] Call Trace: [ 24.072868] [ 24.073148] dump_stack_lvl+0x91/0xf0 [ 24.073643] print_report+0xcc/0x620 [ 24.074130] ? __virt_addr_valid+0x102/0x340 [ 24.074683] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.075309] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.075931] kasan_report+0xbe/0xf0 [ 24.076412] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.077044] vma_interval_tree_remove+0xc75/0xec0 [ 24.077649] vma_prepare+0xc54/0x11a0 [ 24.078125] __split_vma+0x5af/0x950 [ 24.078600] ? __pfx___split_vma+0x10/0x10 [ 24.079122] ? find_held_lock+0x2c/0x110 [ 24.079646] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.080210] ? lock_is_held_type+0x9f/0x120 [ 24.080765] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.081370] ? mtree_range_walk+0x632/0x900 [ 24.081924] ? mas_walk+0x5c7/0x7c0 [ 24.082399] do_vmi_munmap+0x1f1/0x2b0 [ 24.082885] mmap_region+0x1f9/0x2660 [ 24.083364] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.083869] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.084593] ? __pfx_lock_acquire+0x10/0x10 [ 24.085119] ? __pfx_mmap_region+0x10/0x10 [ 24.085666] ? security_mmap_addr+0x7d/0xa0 [ 24.086196] ? get_unmapped_area+0x1f5/0x3f0 [ 24.086745] do_mmap+0x854/0xf00 [ 24.087203] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.087697] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.088243] ksys_mmap_pgoff+0x3af/0x500 [ 24.088754] do_syscall_64+0x3f/0x90 [ 24.089226] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.089860] RIP: 0033:0x7fc0f2dddd82 [ 24.090308] 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 [ 24.092376] RSP: 002b:00007ffd52cb6308 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.093281] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fc0f2dddd82 [ 24.094104] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fc0f2217000 [ 24.094927] RBP: 00007fc0f2217000 R08: 0000000000000009 R09: 0000000000001000 [ 24.095749] R10: 0000000000000812 R11: 0000000000000206 R12: 000055bd00e84ec0 [ 24.096612] R13: 00007ffd52cb6320 R14: 00007ffd52cb6350 R15: 00007ffd52cb66b0 [ 24.097454] [ 24.097737] [ 24.097952] Allocated by task 205: [ 24.098373] kasan_save_stack+0x22/0x50 [ 24.098869] kasan_set_track+0x25/0x30 [ 24.099360] __kasan_slab_alloc+0x59/0x70 [ 24.099877] kmem_cache_alloc+0x16b/0x370 [ 24.100391] vm_area_dup+0x20/0x160 [ 24.100852] __split_vma+0x170/0x950 [ 24.101313] split_vma+0xc6/0x110 [ 24.101756] mprotect_fixup+0x8d2/0xb30 [ 24.102248] do_mprotect_pkey+0x87e/0xd40 [ 24.102762] __x64_sys_mprotect+0x78/0xc0 [ 24.103271] do_syscall_64+0x3f/0x90 [ 24.103737] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.104372] [ 24.104598] Freed by task 205: [ 24.104987] kasan_save_stack+0x22/0x50 [ 24.105487] kasan_set_track+0x25/0x30 [ 24.105979] kasan_save_free_info+0x2b/0x50 [ 24.106508] __kasan_slab_free+0x10a/0x190 [ 24.107044] kmem_cache_free+0x10d/0x4d0 [ 24.107551] rcu_core+0x8c8/0x2860 [ 24.107994] __do_softirq+0x1b7/0x7d4 [ 24.108486] [ 24.108702] Last potentially related work creation: [ 24.109288] kasan_save_stack+0x22/0x50 [ 24.109779] __kasan_record_aux_stack+0x8e/0xa0 [ 24.110345] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.110986] remove_vma+0x139/0x170 [ 24.111435] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.111987] do_vmi_munmap+0x1f1/0x2b0 [ 24.112477] __vm_munmap+0x138/0x3a0 [ 24.112948] __x64_sys_munmap+0x59/0x80 [ 24.113444] do_syscall_64+0x3f/0x90 [ 24.113912] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.114547] [ 24.114758] The buggy address belongs to the object at ffff8880095530e8 [ 24.114758] which belongs to the cache vm_area_struct of size 168 [ 24.116209] The buggy address is located 88 bytes inside of [ 24.116209] freed 168-byte region [ffff8880095530e8, ffff888009553190) [ 24.116238] [ 24.116242] The buggy address belongs to the physical page: [ 24.116250] page:000000009a4ae7dc refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9553 [ 24.116280] memcg:ffff88800d5f7701 [ 24.116289] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.116310] page_type: 0xffffffff() [ 24.116334] raw: 0100000000000200 ffff8880087a0c80 ffffea0000373640 0000000000000006 [ 24.116361] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d5f7701 [ 24.116376] page dumped because: kasan: bad access detected [ 24.116386] [ 24.116390] Memory state around the buggy address: [ 24.116401] ffff888009553000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.116419] ffff888009553080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 24.116438] >ffff888009553100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.116459] ^ [ 24.116472] ffff888009553180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 24.116491] ffff888009553200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 24.116505] ================================================================== [ 24.116939] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.018663] BUG: Bad rss-counter state mm:000000008838bcba type:MM_FILEPAGES val:33 [ 26.019883] BUG: Bad rss-counter state mm:000000008838bcba type:MM_ANONPAGES val:22 [ 26.407563] BUG: Bad rss-counter state mm:000000005ea4488d type:MM_FILEPAGES val:33 [ 26.408781] BUG: Bad rss-counter state mm:000000005ea4488d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:65435' (ECDSA) to the list of known hosts. [ 26.528100] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 26.529468] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 26.530367] CPU: 0 PID: 237 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230620 #1 [ 26.531390] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 26.532372] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 26.533039] 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 [ 26.535246] RSP: 0018:ffff88801ca4f8a8 EFLAGS: 00010212 [ 26.535906] RAX: ffff8880193d4140 RBX: ffff88801bcfeec0 RCX: 1ffff1100379fdd8 [ 26.536803] RDX: 0000000000000001 RSI: ffff8880193d4140 RDI: ffff88801bcfeec0 [ 26.537667] RBP: ffff888019b2d698 R08: 0000000000000008 R09: 0000000000000000 [ 26.538546] R10: 0000000000000000 R11: 00000000000b6a61 R12: 0000000000000000 [ 26.539434] R13: dffffc0000000000 R14: ffff88801ca4f988 R15: ffffffff816e6340 [ 26.540309] FS: 00007fe57970b900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 26.541291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.541995] CR2: 00007fe5796b2000 CR3: 0000000015bd2000 CR4: 0000000000350ef0 [ 26.542880] Call Trace: [ 26.543209] [ 26.543501] ? die_addr+0x3c/0xa0 [ 26.543944] ? exc_general_protection+0x125/0x220 [ 26.544589] ? asm_exc_general_protection+0x26/0x30 [ 26.545237] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 26.546009] ? __rb_insert_augmented+0x78/0x8b0 [ 26.546589] ? vma_interval_tree_insert+0x23a/0x400 [ 26.547221] vma_prepare+0xa1a/0x11a0 [ 26.547705] __split_vma+0x5af/0x950 [ 26.548191] ? __pfx___split_vma+0x10/0x10 [ 26.548723] ? lock_acquire+0x434/0x4c0 [ 26.549227] do_vmi_align_munmap+0x361/0x11f0 [ 26.549792] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 26.550395] ? mtree_range_walk+0x632/0x900 [ 26.550934] ? mas_walk+0x5c7/0x7c0 [ 26.551398] do_vmi_munmap+0x1f1/0x2b0 [ 26.551884] mmap_region+0x1f9/0x2660 [ 26.552367] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 26.553066] ? __pfx_lock_acquire+0x10/0x10 [ 26.553590] ? __pfx_mmap_region+0x10/0x10 [ 26.554107] ? security_mmap_addr+0x7d/0xa0 [ 26.554626] ? get_unmapped_area+0x1f5/0x3f0 [ 26.555165] do_mmap+0x854/0xf00 [ 26.555598] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.556094] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 26.556664] ksys_mmap_pgoff+0x3af/0x500 [ 26.557175] do_syscall_64+0x3f/0x90 [ 26.557644] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.558277] RIP: 0033:0x7fe57a29dd82 [ 26.558731] 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 [ 26.560929] RSP: 002b:00007ffdc5f087d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 26.561829] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe57a29dd82 [ 26.562659] RDX: 0000000000000005 RSI: 0000000000003000 RDI: 00007fe5796ab000 [ 26.563500] RBP: 00007fe5796ab000 R08: 0000000000000008 R09: 0000000000002000 [ 26.564375] R10: 0000000000000812 R11: 0000000000000206 R12: 000056241a61cea0 [ 26.565240] R13: 00007ffdc5f087f0 R14: 00007ffdc5f08820 R15: 00007ffdc5f08b80 [ 26.566120] [ 26.566416] Modules linked in: [ 26.567193] ---[ end trace 0000000000000000 ]--- [ 26.567907] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 26.568629] 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 [ 26.571060] RSP: 0018:ffff88801ca4f8a8 EFLAGS: 00010212 [ 26.571726] RAX: ffff8880193d4140 RBX: ffff88801bcfeec0 RCX: 1ffff1100379fdd8 [ 26.572680] RDX: 0000000000000001 RSI: ffff8880193d4140 RDI: ffff88801bcfeec0 [ 26.573753] RBP: ffff888019b2d698 R08: 0000000000000008 R09: 0000000000000000 [ 26.574784] R10: 0000000000000000 R11: 00000000000b6a61 R12: 0000000000000000 [ 26.575853] R13: dffffc0000000000 R14: ffff88801ca4f988 R15: ffffffff816e6340 [ 26.576863] FS: 00007fe57970b900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 26.577859] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.578591] CR2: 00007fe5796b2000 CR3: 0000000015bd2000 CR4: 0000000000350ef0 VM DIAGNOSIS: 20:08:38 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff8880103e9b40 RCX=0000000000000000 RDX=0000000000000000 RSI=ffffffff814c857a RDI=ffff8880103e9f34 RBP=ffff8880103e9b40 RSP=ffff88801419f400 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6a61 R12=ffff8880103e9b40 R13=0000000000000000 R14=ffffffff85652c08 R15=ffff888016ef8260 RIP=ffffffff8137459d RFL=00000213 [----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 00007fb028cff900 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=00007fecf03d5650 CR3=0000000009a22000 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=c3331e76d34d1ebe904921ea1806dbff XMM02=000000000011b428d59e07bde36eea69 XMM03=000000000011b550ec2efd57dc4c00df XMM04=690d4771162b120400000000000ae988 XMM05=6097d2982c8eeb7200000000001327b0 XMM06=806171799158d9670000000000131230 XMM07=fb795ef6d6577056000000000011dc70 XMM08=2c67c8bc2e329bc3000000000011b550 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=1ffff11002039df1 RCX=ffffffff812d8f13 RDX=0000000000000001 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=0000000000000000 RSP=ffff8880101cef70 R8 =0000000000000000 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6a61 R12=0000000000000002 R13=0000000000000000 R14=ffffffff8560b640 R15=0000000000000000 RIP=ffffffff8180fea8 RFL=00000256 [---ZAP-] 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 00007fecefe20900 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=00007fecf03d7618 CR3=000000000f002000 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