BUG: unable to handle page fault for address: ffffffffff600000 #PF: supervisor read access in kernel mode #PF: error_code(0x0001) - permissions violation PGD 6812067 P4D 6812067 PUD 6814067 PMD 6816067 PTE 8000000006809165 Oops: 0001 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3912 Comm: syz-executor.3 Not tainted 5.15.149-syzkaller-00490-g5d96939590c0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:copy_from_kernel_nofault+0x86/0x2e0 mm/maccess.c:37 Code: 48 89 55 d0 0f 85 ea 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 3b 97 d6 ff 49 83 fd 07 76 5c 4d 89 fe 49 83 c5 f8 49 83 c7 08 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 RSP: 0018:ffffc90001f9f030 EFLAGS: 00010292 RAX: 0000000000000002 RBX: 00007ffffffff000 RCX: ffff8881111662c0 RDX: ffff888111166e50 RSI: 0000000000000008 RDI: 0000000000000007 RBP: ffffc90001f9f068 R08: ffffffff81999335 R09: ffffed102222cc59 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000 R13: 0000000000000000 R14: ffffc90001f9f0c8 R15: ffffc90001f9f0d0 FS: 00007fa1600c66c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 000000010c494000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_probe_read_kernel_common kernel/trace/bpf_trace.c:220 [inline] ____bpf_probe_read_compat kernel/trace/bpf_trace.c:284 [inline] bpf_probe_read_compat+0x112/0x180 kernel/trace/bpf_trace.c:277 bpf_prog_baa065642a502c00+0x64/0x860 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline] __bpf_prog_run include/linux/filter.h:618 [inline] bpf_prog_run include/linux/filter.h:632 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline] bpf_trace_run6+0x20a/0x2c0 kernel/trace/bpf_trace.c:1924 __bpf_trace_ext4_ext_remove_space_done+0x4a/0x60 include/trace/events/ext4.h:2094 trace_ext4_ext_remove_space_done include/trace/events/ext4.h:2094 [inline] ext4_ext_remove_space+0x48b4/0x4a60 fs/ext4/extents.c:3030 ext4_ext_truncate+0x19a/0x240 fs/ext4/extents.c:4419 ext4_truncate+0x96c/0xfa0 fs/ext4/inode.c:4269 ext4_setattr+0xf84/0x1940 fs/ext4/inode.c:5567 notify_change+0xc7a/0xf30 fs/attr.c:505 do_truncate+0x21c/0x300 fs/open.c:66 handle_truncate fs/namei.c:3265 [inline] do_open fs/namei.c:3612 [inline] path_openat+0x28ed/0x2f40 fs/namei.c:3742 do_filp_open+0x21c/0x460 fs/namei.c:3769 do_sys_openat2+0x13f/0x830 fs/open.c:1234 do_sys_open fs/open.c:1250 [inline] __do_sys_openat fs/open.c:1266 [inline] __se_sys_openat fs/open.c:1261 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1261 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fa161352ea9 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:00007fa1600c60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fa161480f80 RCX: 00007fa161352ea9 RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007fa16139f4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fa161480f80 R15: 00007fff6f23d158 Modules linked in: CR2: ffffffffff600000 ---[ end trace 977e87ee06cd7952 ]--- RIP: 0010:copy_from_kernel_nofault+0x86/0x2e0 mm/maccess.c:37 Code: 48 89 55 d0 0f 85 ea 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 3b 97 d6 ff 49 83 fd 07 76 5c 4d 89 fe 49 83 c5 f8 49 83 c7 08 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 RSP: 0018:ffffc90001f9f030 EFLAGS: 00010292 RAX: 0000000000000002 RBX: 00007ffffffff000 RCX: ffff8881111662c0 RDX: ffff888111166e50 RSI: 0000000000000008 RDI: 0000000000000007 RBP: ffffc90001f9f068 R08: ffffffff81999335 R09: ffffed102222cc59 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000 R13: 0000000000000000 R14: ffffc90001f9f0c8 R15: ffffc90001f9f0d0 FS: 00007fa1600c66c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600000 CR3: 000000010c494000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 89 55 d0 mov %rdx,-0x30(%rbp) 4: 0f 85 ea 01 00 00 jne 0x1f4 a: ff 02 incl (%rdx) c: bf 07 00 00 00 mov $0x7,%edi 11: 4c 89 ee mov %r13,%rsi 14: e8 3b 97 d6 ff call 0xffd69754 19: 49 83 fd 07 cmp $0x7,%r13 1d: 76 5c jbe 0x7b 1f: 4d 89 fe mov %r15,%r14 22: 49 83 c5 f8 add $0xfffffffffffffff8,%r13 26: 49 83 c7 08 add $0x8,%r15 * 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