BUG: unable to handle page fault for address: fffffbfff35395f2 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 13fff0067 PTE 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 9589 Comm: syz.4.938 Not tainted 6.11.0-syzkaller-07337-g2004cef11ea0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189 Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 RSP: 0000:ffffc900049df080 EFLAGS: 00010086 RAX: 0000000000cef701 RBX: 1ffffffff35395f2 RCX: ffffffff81703cdb RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9a9caf90 RBP: ffffffffffffffff R08: ffffffff9a9caf97 R09: 1ffffffff35395f2 R10: dffffc0000000000 R11: fffffbfff35395f2 R12: ffff88804552bc00 R13: ffff88804552c6d8 R14: dffffc0000000001 R15: fffffbfff35395f3 FS: 0000555557da3500(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff35395f2 CR3: 0000000065c7c000 CR4: 0000000000350ef0 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] __lock_acquire+0xc8b/0x2050 kernel/locking/lockdep.c:5169 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5822 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:593 raw_spin_rq_lock kernel/sched/sched.h:1423 [inline] rq_lock kernel/sched/sched.h:1722 [inline] __schedule+0x357/0x4b50 kernel/sched/core.c:6508 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6929 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:mas_prev_setup+0x8f/0xad0 lib/maple_tree.c:5815 Code: 4c 89 fd 48 c1 ed 03 42 0f b6 44 25 00 84 c0 0f 85 8f 08 00 00 41 8b 1f 48 89 df 48 c7 c6 f0 1d 03 90 e8 c4 d3 e0 f5 83 fb 04 <7f> 20 85 db 74 3d 83 fb 03 0f 84 00 01 00 00 83 fb 04 0f 85 ed 00 RSP: 0000:ffffc900049df6e8 EFLAGS: 00000297 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88804552bc00 RDX: 0000000000000006 RSI: ffffffff90031df0 RDI: 0000000000000000 RBP: 1ffff9200093bf0f R08: 0000000000000005 R09: ffffffff8bb3f0dc R10: 0000000000000006 R11: ffff88804552bc00 R12: dffffc0000000000 R13: ffffc900049df780 R14: ffffc900049df840 R15: ffffc900049df878 mas_prev+0xaa/0x130 lib/maple_tree.c:5884 vma_prev include/linux/mm.h:1015 [inline] find_mergeable_anon_vma+0x495/0x870 mm/mmap.c:1170 __anon_vma_prepare+0xd9/0x4a0 mm/rmap.c:199 __vmf_anon_prepare mm/memory.c:3304 [inline] vmf_anon_prepare mm/internal.h:316 [inline] do_anonymous_page mm/memory.c:4566 [inline] do_pte_missing mm/memory.c:3960 [inline] handle_pte_fault+0x587e/0x7010 mm/memory.c:5536 __handle_mm_fault mm/memory.c:5679 [inline] handle_mm_fault+0x1106/0x1bb0 mm/memory.c:5847 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline] handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7f9c2d135676 Code: 8d 3c 30 4c 89 de 4c 89 54 24 38 e8 54 89 04 00 4c 8b 54 24 38 85 c0 0f 85 57 01 00 00 48 8b 44 24 28 48 89 df 4c 89 54 24 38 <4c> 89 93 98 06 00 00 48 89 83 90 06 00 00 48 8d 83 10 03 00 00 4c RSP: 002b:00007ffe0c573fa0 EFLAGS: 00010246 RAX: 00007f9c2de9b000 RBX: 00007f9c2debb6c0 RCX: 00007f9c2d17dfb7 RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f9c2debb6c0 RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000021000 R11: 0000000000000206 R12: 00007ffe0c5740f0 R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000 Modules linked in: CR2: fffffbfff35395f2 ---[ end trace 0000000000000000 ]--- RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189 Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 RSP: 0000:ffffc900049df080 EFLAGS: 00010086 RAX: 0000000000cef701 RBX: 1ffffffff35395f2 RCX: ffffffff81703cdb RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9a9caf90 RBP: ffffffffffffffff R08: ffffffff9a9caf97 R09: 1ffffffff35395f2 R10: dffffc0000000000 R11: fffffbfff35395f2 R12: ffff88804552bc00 R13: ffff88804552c6d8 R14: dffffc0000000001 R15: fffffbfff35395f3 FS: 0000555557da3500(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff35395f2 CR3: 0000000065c7c000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess), 7 bytes skipped: 0: df 4f 8d fisttps -0x73(%rdi) 3: 3c 31 cmp $0x31,%al 5: 4c 89 fd mov %r15,%rbp 8: 4c 29 dd sub %r11,%rbp b: 48 83 fd 10 cmp $0x10,%rbp f: 7f 29 jg 0x3a 11: 48 85 ed test %rbp,%rbp 14: 0f 84 3e 01 00 00 je 0x158 1a: 4c 89 cd mov %r9,%rbp 1d: 48 f7 d5 not %rbp 20: 48 01 dd add %rbx,%rbp * 23: 41 80 3b 00 cmpb $0x0,(%r11) <-- trapping instruction 27: 0f 85 c9 01 00 00 jne 0x1f6 2d: 49 ff c3 inc %r11 30: 48 ff c5 inc %rbp 33: 75 ee jne 0x23 35: e9 .byte 0xe9 36: 1e (bad) 37: 01 00 add %eax,(%rax)