BUG: unable to handle page fault for address: ffffffffff600000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 6c12067 P4D 6c12067 PUD 6c14067 PMD 6c16067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 15460 Comm: syz-executor.3 Tainted: G W 6.1.75-syzkaller-00073-g08cc4037cf32 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:copy_from_kernel_nofault+0x86/0x2d0 mm/maccess.c:36 Code: 48 89 55 d0 0f 85 de 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 bb 3a d2 ff 49 83 fd 07 76 58 4d 89 fe 49 83 c7 08 49 83 c5 f8 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 RSP: 0018:ffffc90000d37050 EFLAGS: 00010257 RAX: 0000000000000002 RBX: 00007ffffffff000 RCX: ffff88811144e540 RDX: ffff88811144f0e0 RSI: 0000000000000008 RDI: 0000000000000007 RBP: ffffc90000d37088 R08: ffffffff81a337d5 R09: ffffed1022289ca9 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000 R13: 0000000000000000 R14: ffffc90000d370e8 R15: ffffc90000d370f0 FS: 00007f10c0a276c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 0000000139e13000 CR4: 00000000003506b0 Call Trace: bpf_probe_read_kernel_common kernel/trace/bpf_trace.c:230 [inline] ____bpf_probe_read_compat kernel/trace/bpf_trace.c:294 [inline] bpf_probe_read_compat+0x112/0x180 kernel/trace/bpf_trace.c:287 bpf_prog_baa065642a502c00+0x64/0x68 bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline] __bpf_prog_run include/linux/filter.h:600 [inline] bpf_prog_run include/linux/filter.h:607 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2275 [inline] bpf_trace_run6+0x1ea/0x350 kernel/trace/bpf_trace.c:2318 __bpf_trace_ext4_ext_remove_space_done+0x4c/0x60 include/trace/events/ext4.h:2089 trace_ext4_ext_remove_space_done include/trace/events/ext4.h:2089 [inline] ext4_ext_remove_space+0x4d4e/0x4f50 fs/ext4/extents.c:3032 ext4_ext_truncate+0x1f4/0x320 fs/ext4/extents.c:4417 ext4_truncate+0x96c/0xfb0 fs/ext4/inode.c:4279 ext4_setattr+0x1107/0x1a50 fs/ext4/inode.c:5586 notify_change+0xd53/0x1010 fs/attr.c:499 do_truncate+0x21c/0x300 fs/open.c:66 handle_truncate fs/namei.c:3292 [inline] do_open fs/namei.c:3637 [inline] path_openat+0x2726/0x2d60 fs/namei.c:3790 do_filp_open+0x230/0x480 fs/namei.c:3817 do_sys_openat2+0x13f/0x850 fs/open.c:1341 do_sys_open fs/open.c:1357 [inline] __do_sys_openat fs/open.c:1373 [inline] __se_sys_openat fs/open.c:1368 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1368 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f10bfc7dea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f10c0a270c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f10bfdabf80 RCX: 00007f10bfc7dea9 RDX: 0000000000007a05 RSI: 0000000020000180 RDI: ffffffffffffff9c RBP: 00007f10bfcca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001700 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f10bfdabf80 R15: 00007ffc0fbc72d8 Modules linked in: CR2: ffffffffff600000 ---[ end trace 0000000000000000 ]--- RIP: 0010:copy_from_kernel_nofault+0x86/0x2d0 mm/maccess.c:36 Code: 48 89 55 d0 0f 85 de 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 bb 3a d2 ff 49 83 fd 07 76 58 4d 89 fe 49 83 c7 08 49 83 c5 f8 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 RSP: 0018:ffffc90000d37050 EFLAGS: 00010257 RAX: 0000000000000002 RBX: 00007ffffffff000 RCX: ffff88811144e540 RDX: ffff88811144f0e0 RSI: 0000000000000008 RDI: 0000000000000007 RBP: ffffc90000d37088 R08: ffffffff81a337d5 R09: ffffed1022289ca9 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000 R13: 0000000000000000 R14: ffffc90000d370e8 R15: ffffc90000d370f0 FS: 00007f10c0a276c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 0000000139e13000 CR4: 00000000003506b0 ---------------- Code disassembly (best guess): 0: 48 89 55 d0 mov %rdx,-0x30(%rbp) 4: 0f 85 de 01 00 00 jne 0x1e8 a: ff 02 incl (%rdx) c: bf 07 00 00 00 mov $0x7,%edi 11: 4c 89 ee mov %r13,%rsi 14: e8 bb 3a d2 ff call 0xffd23ad4 19: 49 83 fd 07 cmp $0x7,%r13 1d: 76 58 jbe 0x77 1f: 4d 89 fe mov %r15,%r14 22: 49 83 c7 08 add $0x8,%r15 26: 49 83 c5 f8 add $0xfffffffffffffff8,%r13 * 2a: 49 8b 1c 24 mov (%r12),%rbx <-- trapping instruction 2e: 4c 89 f0 mov %r14,%rax 31: 48 c1 e8 03 shr $0x3,%rax 35: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 3c: fc ff df 3f: 80 .byte 0x80