general protection fault in fq_codel

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in fq_codel_enqueue (3) net	C	inconclusive		5	875d	1121d	22/28	fixed on 2023/02/24 13:50
linux-4.19	general protection fault in fq_codel_enqueue	C		done	5	1646d	1674d	1/1	fixed on 2020/06/21 14:03
linux-4.19	general protection fault in fq_codel_enqueue (2)	C		error	14	816d	1548d	0/1	upstream: reported C repro on 2020/08/28 22:42
android-5-10	general protection fault in fq_codel_enqueue (2)				2	215d	217d	0/2	auto-obsoleted due to no activity on 2024/07/20 23:55
android-5-15	general protection fault in fq_codel_enqueue				1	245d	245d	0/2	auto-obsoleted due to no activity on 2024/06/21 01:28
linux-4.14	general protection fault in fq_codel_enqueue	C		inconclusive	6	1078d	1671d	0/1	upstream: reported C repro on 2020/04/27 21:56
upstream	general protection fault in fq_codel_enqueue (2)	C	done		34	1148d	1548d	0/28	closed as invalid on 2021/10/07 21:22
upstream	general protection fault in fq_codel_enqueue net	C	done		25	1594d	1679d	15/28	fixed on 2020/07/17 17:58

general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 7142 Comm: syz-executor.5 Not tainted 5.10.120-syzkaller-00388-g2de0a17df44a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 RIP: 0010:dequeue_head net/sched/sch_fq_codel.c:120 [inline] RIP: 0010:fq_codel_drop net/sched/sch_fq_codel.c:168 [inline] RIP: 0010:fq_codel_enqueue+0xcb6/0x14b0 net/sched/sch_fq_codel.c:230 Code: 1f 44 00 00 89 1c 24 4c 89 6c 24 38 48 8b 44 24 20 42 80 3c 38 00 74 08 4c 89 f7 e8 b4 26 c9 fd 4d 8b 2e 4d 89 ee 49 c1 ee 03 <43> 80 3c 3e 00 74 08 4c 89 ef e8 9b 26 c9 fd 4d 8b 65 00 4c 89 fb RSP: 0018:ffffc90006fd7420 EFLAGS: 00010246 RAX: 1ffff11028158000 RBX: 0000000000000000 RCX: 1ffff11028158000 RDX: ffff888140ac0000 RSI: 00000000000002e6 RDI: 00000000000002e7 RBP: ffffc90006fd7590 R08: ffffffff83dd865d R09: ffffffff83c12e6f R10: 0000000000000002 R11: ffff88810cb3cf00 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f1143905700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcbf3435090 CR3: 0000000117a34000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __dev_xmit_skb net/core/dev.c:3823 [inline] __dev_queue_xmit+0xdde/0x2bb0 net/core/dev.c:4136 dev_queue_xmit+0x17/0x20 net/core/dev.c:4204 __bpf_tx_skb net/core/filter.c:2116 [inline] __bpf_redirect_common net/core/filter.c:2155 [inline] __bpf_redirect+0x892/0xcb0 net/core/filter.c:2162 ____bpf_clone_redirect net/core/filter.c:2448 [inline] bpf_clone_redirect+0x247/0x390 net/core/filter.c:2420 bpf_prog_3d1649e183dc2cc1+0x56/0x880 bpf_dispatcher_nop_func include/linux/bpf.h:676 [inline] bpf_test_run+0x39a/0xc20 net/bpf/test_run.c:52 bpf_prog_test_run_skb+0xb4c/0x13e0 net/bpf/test_run.c:591 bpf_prog_test_run+0x345/0x3c0 kernel/bpf/syscall.c:3150 __do_sys_bpf+0x4a0/0x6c0 kernel/bpf/syscall.c:4445 __se_sys_bpf kernel/bpf/syscall.c:4383 [inline] __x64_sys_bpf+0x7a/0x90 kernel/bpf/syscall.c:4383 do_syscall_64+0x34/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f114478f209 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1143905168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f11448a1f60 RCX: 00007f114478f209 RDX: 0000000000000048 RSI: 0000000020000080 RDI: 000000000000000a RBP: 00007f11447e9161 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcb69b34ff R14: 00007f1143905300 R15: 0000000000022000 Modules linked in: ---[ end trace f603f37c77dfb50b ]--- RIP: 0010:dequeue_head net/sched/sch_fq_codel.c:120 [inline] RIP: 0010:fq_codel_drop net/sched/sch_fq_codel.c:168 [inline] RIP: 0010:fq_codel_enqueue+0xcb6/0x14b0 net/sched/sch_fq_codel.c:230 Code: 1f 44 00 00 89 1c 24 4c 89 6c 24 38 48 8b 44 24 20 42 80 3c 38 00 74 08 4c 89 f7 e8 b4 26 c9 fd 4d 8b 2e 4d 89 ee 49 c1 ee 03 <43> 80 3c 3e 00 74 08 4c 89 ef e8 9b 26 c9 fd 4d 8b 65 00 4c 89 fb RSP: 0018:ffffc90006fd7420 EFLAGS: 00010246 RAX: 1ffff11028158000 RBX: 0000000000000000 RCX: 1ffff11028158000 RDX: ffff888140ac0000 RSI: 00000000000002e6 RDI: 00000000000002e7 RBP: ffffc90006fd7590 R08: ffffffff83dd865d R09: ffffffff83c12e6f R10: 0000000000000002 R11: ffff88810cb3cf00 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f1143905700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcbf3435090 CR3: 0000000117a34000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 44 00 00 add %r8b,(%rax) 3: 89 1c 24 mov %ebx,(%rsp) 6: 4c 89 6c 24 38 mov %r13,0x38(%rsp) b: 48 8b 44 24 20 mov 0x20(%rsp),%rax 10: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 15: 74 08 je 0x1f 17: 4c 89 f7 mov %r14,%rdi 1a: e8 b4 26 c9 fd callq 0xfdc926d3 1f: 4d 8b 2e mov (%r14),%r13 22: 4d 89 ee mov %r13,%r14 25: 49 c1 ee 03 shr $0x3,%r14 * 29: 43 80 3c 3e 00 cmpb $0x0,(%r14,%r15,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 4c 89 ef mov %r13,%rdi 33: e8 9b 26 c9 fd callq 0xfdc926d3 38: 4d 8b 65 00 mov 0x0(%r13),%r12 3c: 4c 89 fb mov %r15,%rbx