bisecting fixing commit since 1245008122d7311683d70c05b2eea167a314fb5f building syzkaller on 3e8f6c27551f163a2fd2661e4b3cac126a5e7ef2 testing commit 1245008122d7311683d70c05b2eea167a314fb5f with gcc (GCC) 8.1.0 kernel signature: dc2eca0c39e404c8a9e4974ec86f1a5785e4b0201cb10fa150717f387e45f181 run #0: crashed: BUG: unable to handle kernel paging request in bpf_trace_run2 run #1: crashed: BUG: unable to handle kernel paging request in syscall_enter_from_user_mode run #2: crashed: BUG: unable to handle kernel paging request in syscall_enter_from_user_mode run #3: crashed: BUG: unable to handle kernel paging request in syscall_enter_from_user_mode run #4: crashed: BUG: unable to handle kernel paging request in bpf_trace_run2 run #5: crashed: BUG: unable to handle kernel paging request in syscall_enter_from_user_mode run #6: crashed: BUG: unable to handle kernel paging request in syscall_enter_from_user_mode run #7: crashed: BUG: unable to handle kernel paging request in bpf_trace_run2 run #8: crashed: BUG: unable to handle kernel paging request in syscall_enter_from_user_mode run #9: crashed: BUG: unable to handle kernel paging request in syscall_enter_from_user_mode testing current HEAD 3db1a3fa98808aa90f95ec3e0fa2fc7abf28f5c9 testing commit 3db1a3fa98808aa90f95ec3e0fa2fc7abf28f5c9 with gcc (GCC) 8.1.0 kernel signature: e7d408979324d22078340a979972d142d78d3e0dc09812150587363e9c2709b3 run #0: crashed: BUG: unable to handle kernel paging request in __traceiter_sys_enter run #1: crashed: BUG: unable to handle kernel paging request in bpf_trace_run2 run #2: crashed: BUG: unable to handle kernel paging request in __traceiter_sys_enter run #3: crashed: BUG: unable to handle kernel paging request in __traceiter_sys_enter run #4: crashed: BUG: unable to handle kernel paging request in __traceiter_sys_enter run #5: crashed: BUG: unable to handle kernel paging request in bpf_trace_run2 run #6: crashed: BUG: unable to handle kernel paging request in __traceiter_sys_enter run #7: crashed: BUG: unable to handle kernel paging request in bpf_trace_run2 run #8: crashed: BUG: unable to handle kernel paging request in __traceiter_sys_enter run #9: crashed: BUG: unable to handle kernel paging request in bpf_trace_run2 revisions tested: 2, total time: 18m3.239781464s (build: 10m25.775257277s, test: 6m52.958879176s) the crash still happens on HEAD commit msg: Merge tag 'staging-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging crash: BUG: unable to handle kernel paging request in bpf_trace_run2 BUG: unable to handle page fault for address: ffffc90000223030 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 100000067 P4D 100000067 PUD 100158067 PMD 1008c6067 PTE 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 6168 Comm: syz-executor.3 Not tainted 5.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:bpf_dispatcher_nop_func include/linux/bpf.h:651 [inline] RIP: 0010:__bpf_trace_run kernel/trace/bpf_trace.c:2088 [inline] RIP: 0010:bpf_trace_run2+0x92/0x1b0 kernel/trace/bpf_trace.c:2125 Code: 3d 14 6b 94 03 00 0f 84 e8 00 00 00 be 28 08 00 00 48 c7 c7 a2 99 0d 84 e8 0b 96 f0 ff 0f 1f 44 00 00 48 8d 73 38 48 8d 7d d8 53 30 e8 46 83 fb 01 85 c0 74 0d 80 3d dc 6a 94 03 00 0f 84 80 RSP: 0018:ffffc900001ebeb8 EFLAGS: 00010202 RAX: 0000000080000001 RBX: ffffc90000223000 RCX: 00000000b2001e43 RDX: ffffffff813117e0 RSI: ffffc90000223038 RDI: ffffc900001ebec0 RBP: ffffc900001ebee8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900001ebf58 R13: 0000000000000037 R14: 0000000000000037 R15: 0000000000000000 FS: 0000000002f5a940(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000223030 CR3: 000000010d2f1001 CR4: 00000000001706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __traceiter_sys_enter+0x24/0x40 include/trace/events/syscalls.h:18 trace_sys_enter include/trace/events/syscalls.h:18 [inline] syscall_trace_enter.isra.18+0x205/0x260 kernel/entry/common.c:76 do_syscall_64+0xf/0x70 arch/x86/entry/common.c:41 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460c8a Code: b8 34 01 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 1d 87 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 fa 86 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007ffd2d8ae148 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffd2d8ae170 RCX: 0000000000460c8a RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 0000000000749ca0 R08: 00007ffd2d8ae16c R09: 0000000000004000 R10: 00007ffd2d8ae170 R11: 0000000000000246 R12: 00007ffd2d8ae1d0 R13: 0000000000000003 R14: 00000000007481a0 R15: 0000000000000029 Modules linked in: CR2: ffffc90000223030 ---[ end trace 539922af454f282d ]--- RIP: 0010:bpf_dispatcher_nop_func include/linux/bpf.h:651 [inline] RIP: 0010:__bpf_trace_run kernel/trace/bpf_trace.c:2088 [inline] RIP: 0010:bpf_trace_run2+0x92/0x1b0 kernel/trace/bpf_trace.c:2125 Code: 3d 14 6b 94 03 00 0f 84 e8 00 00 00 be 28 08 00 00 48 c7 c7 a2 99 0d 84 e8 0b 96 f0 ff 0f 1f 44 00 00 48 8d 73 38 48 8d 7d d8 53 30 e8 46 83 fb 01 85 c0 74 0d 80 3d dc 6a 94 03 00 0f 84 80 RSP: 0018:ffffc900001ebeb8 EFLAGS: 00010202 RAX: 0000000080000001 RBX: ffffc90000223000 RCX: 00000000b2001e43 RDX: ffffffff813117e0 RSI: ffffc90000223038 RDI: ffffc900001ebec0 RBP: ffffc900001ebee8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900001ebf58 R13: 0000000000000037 R14: 0000000000000037 R15: 0000000000000000 FS: 0000000002f5a940(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000223030 CR3: 000000010d2f1001 CR4: 00000000001706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400