bisecting fixing commit since 70b971118e074d5042715587953f27929e99117a
building syzkaller on 53ce8104a7b0e1c4c79ab17d5faddce6ad16a1f1
testing commit 70b971118e074d5042715587953f27929e99117a with gcc (GCC) 8.1.0
kernel signature: bf41f79cc09f296719d93fca916b4a4ad66ba666f0be0100f913c1484bc8d0ff
run #0: crashed: BUG: unable to handle kernel paging request in syscall_enter_from_user_mode
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 syscall_enter_from_user_mode
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 syscall_enter_from_user_mode
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 bpf_trace_run2
testing current HEAD 9ff9b0d392ea08090cd1780fb196f36dbb586529
testing commit 9ff9b0d392ea08090cd1780fb196f36dbb586529 with gcc (GCC) 8.1.0
kernel signature: 1b63b3e62ac9ddd640d58cc80481ab108cdcecea59ab71cd2753235596ca5096
all runs: crashed: BUG: unable to handle kernel paging request in __traceiter_sys_enter
revisions tested: 2, total time: 17m56.370700185s (build: 11m14.740068758s, test: 5m56.997481301s)
the crash still happens on HEAD
commit msg: Merge tag 'net-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
crash: BUG: unable to handle kernel paging request in __traceiter_sys_enter
BUG: unable to handle page fault for address: ffffffffa005e2f0
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 448d067 P4D 448d067 PUD 448e063 PMD 13ad34067 PTE 0
Oops: 0010 [#1] PREEMPT SMP
CPU: 1 PID: 8350 Comm: syz-executor.1 Not tainted 5.9.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:0xffffffffa005e2f0
Code: Unable to access opcode bytes at RIP 0xffffffffa005e2c6.
RSP: 0018:ffffc90000e4beb0 EFLAGS: 00010216
RAX: 0000000b2183bb4e RBX: ffffc90000e29000 RCX: 00000000ffffffff
RDX: 0000000000000004 RSI: ffffc90000e29038 RDI: ffffc90000e4bec0
RBP: ffffc90000e4bee8 R08: 0000000d2f283511 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90000e4bf58
R13: ffffc90000e4bf58 R14: 0000000b2183bb4e R15: 0000000000000000
FS:  00007f64b6f89700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffa005e2c6 CR3: 000000011ce90000 CR4: 00000000001506e0
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.15+0x1ea/0x240 kernel/entry/common.c:67
 do_syscall_64+0xf/0x70 arch/x86/entry/common.c:41
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x46043a
Code: 25 18 00 00 00 00 74 01 f0 48 0f b1 3d 2f 9a 24 01 48 39 c2 75 da f3 c3 0f 1f 84 00 00 00 00 00 48 63 ff b8 e4 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 f3 c3 0f 1f 40 00 48 c7 c2 d4 ff ff ff f7
RSP: 002b:00007f64b6f88c58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e4
RAX: ffffffffffffffda RBX: 00000000004c3d97 RCX: 000000000046043a
RDX: 0000000000000003 RSI: 00007f64b6f88c60 RDI: 0000000000000001
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000e
R13: 00007ffd7dd70d5f R14: 000000000118cf40 R15: 000000000118cf4c
Modules linked in:
CR2: ffffffffa005e2f0
---[ end trace 662443d16cf19aa7 ]---
RIP: 0010:0xffffffffa005e2f0
Code: Unable to access opcode bytes at RIP 0xffffffffa005e2c6.
RSP: 0018:ffffc90000e4beb0 EFLAGS: 00010216

RAX: 0000000b2183bb4e RBX: ffffc90000e29000 RCX: 00000000ffffffff
RDX: 0000000000000004 RSI: ffffc90000e29038 RDI: ffffc90000e4bec0
RBP: ffffc90000e4bee8 R08: 0000000d2f283511 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90000e4bf58
R13: ffffc90000e4bf58 R14: 0000000b2183bb4e R15: 0000000000000000
FS:  00007f64b6f89700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffa005e2c6 CR3: 000000011ce90000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400