BUG: unable to handle page fault for address: fffffbfffbf4a000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 9639 Comm: syz.2.263 Not tainted 6.12.0-rc2-next-20241008-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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:ffffc90003ebf558 EFLAGS: 00010286 RAX: 0000000000000001 RBX: 1ffffffffbf4a000 RCX: ffffffff81cf65ff RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffffdfa50000 RBP: ffffffffffffffff R08: ffffffffdfa50007 R09: 1ffffffffbf4a000 R10: dffffc0000000000 R11: fffffbfffbf4a000 R12: ffffffffdfa50000 R13: 0000000000000008 R14: dffffc0000000001 R15: fffffbfffbf4a001 FS: 0000555561792500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfffbf4a000 CR3: 0000000079f18000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_read include/linux/instrumented.h:26 [inline] copy_from_kernel_nofault+0x6f/0x2f0 mm/maccess.c:35 bpf_probe_read_kernel_common include/linux/bpf.h:2960 [inline] ____bpf_probe_read_compat kernel/trace/bpf_trace.c:294 [inline] bpf_probe_read_compat+0x10f/0x180 kernel/trace/bpf_trace.c:287 bpf_prog_88b8db6957d33ffb+0x48/0x4a bpf_dispatcher_nop_func include/linux/bpf.h:1257 [inline] __bpf_prog_run include/linux/filter.h:701 [inline] bpf_prog_run include/linux/filter.h:708 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2318 [inline] bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2359 trace_rss_stat include/trace/events/kmem.h:384 [inline] mm_trace_rss_stat+0x1b9/0x220 mm/memory.c:181 add_mm_counter include/linux/mm.h:2613 [inline] filemap_map_pages+0x1733/0x20d0 mm/filemap.c:3689 do_fault_around mm/memory.c:5257 [inline] do_read_fault mm/memory.c:5290 [inline] do_fault mm/memory.c:5433 [inline] do_pte_missing mm/memory.c:3973 [inline] handle_pte_fault+0x2bd3/0x6830 mm/memory.c:5778 __handle_mm_fault mm/memory.c:5921 [inline] handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6089 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: 0033:0x7f68b365cdb6 Code: ff 48 83 e8 01 48 89 d6 bf 01 00 00 00 48 c1 e0 0e 48 c1 ee 06 48 01 c8 48 89 d1 81 e6 ff 3f 00 00 48 c1 e9 03 83 e1 07 d3 e7 <40> 84 bc 06 20 20 00 00 0f 85 27 fd ff ff e9 ce fd ff ff e8 72 55 RSP: 002b:00007fffaeee7190 EFLAGS: 00010202 RAX: 000000110c348000 RBX: 00007f68b4465720 RCX: 0000000000000002 RDX: ffffffff8196b2d2 RSI: 0000000000001acb RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f68b3920000 R09: 00007f68b3922000 R10: 000000008196b2d6 R11: 0000000000000003 R12: ffffffff8196b79c R13: 00007f68b3936018 R14: 0000000000000008 R15: 00000000000002a8 Modules linked in: CR2: fffffbfffbf4a000 ---[ 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:ffffc90003ebf558 EFLAGS: 00010286 RAX: 0000000000000001 RBX: 1ffffffffbf4a000 RCX: ffffffff81cf65ff RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffffdfa50000 RBP: ffffffffffffffff R08: ffffffffdfa50007 R09: 1ffffffffbf4a000 R10: dffffc0000000000 R11: fffffbfffbf4a000 R12: ffffffffdfa50000 R13: 0000000000000008 R14: dffffc0000000001 R15: fffffbfffbf4a001 FS: 0000555561792500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfffbf4a000 CR3: 0000000079f18000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- 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)