kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 12647 Comm: syz-executor.4 Not tainted 4.19.97-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:__read_seqcount_begin include/linux/seqlock.h:113 [inline]
RIP: 0010:raw_read_seqcount_begin include/linux/seqlock.h:148 [inline]
RIP: 0010:hrtimer_active+0x11e/0x230 kernel/time/hrtimer.c:1330
Code: 48 39 c3 0f 84 d3 00 00 00 e8 be 23 0f 00 48 8b 45 c8 80 38 00 0f 85 06 01 00 00 49 8b 5d 30 4c 8d 63 10 4c 89 e0 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85
RSP: 0018:ffff8881d098f350 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffc9000e8db000
RDX: 000000000000be06 RSI: ffffffff815bf202 RDI: ffff88806c772780
RBP: ffff8881d098f3a8 R08: ffff8881dcc92180 R09: 0000000000000000
R10: ffffed100d8ee4a4 R11: ffff88806c772527 R12: 0000000000000010
R13: ffff88806c772780 R14: ffff888215232640 R15: dffffc0000000000
FS:  00007f32dc92c700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000717158 CR3: 00000001f7af0000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hrtimer_try_to_cancel+0x74/0x5a0 kernel/time/hrtimer.c:1147
 hrtimer_cancel+0x20/0x40 kernel/time/hrtimer.c:1173
 qdisc_watchdog_cancel+0x16/0x20 net/sched/sch_api.c:632
 cbs_destroy+0x5e/0xd0 net/sched/sch_cbs.c:377
 qdisc_create+0xaa6/0x1230 net/sched/sch_api.c:1203
 tc_modify_qdisc+0x51b/0x1bd3 net/sched/sch_api.c:1571
 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:4768
 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454
 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4786
 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
 netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343
 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:632
 ___sys_sendmsg+0x803/0x920 net/socket.c:2115
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b159
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f32dc92bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f32dc92c6d4 RCX: 000000000045b159
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000099d R14: 00000000004caee4 R15: 000000000075bfd4
Modules linked in:
---[ end trace 24f1da116d265bb3 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:__read_seqcount_begin include/linux/seqlock.h:113 [inline]
RIP: 0010:raw_read_seqcount_begin include/linux/seqlock.h:148 [inline]
RIP: 0010:hrtimer_active+0x11e/0x230 kernel/time/hrtimer.c:1330
Code: 48 39 c3 0f 84 d3 00 00 00 e8 be 23 0f 00 48 8b 45 c8 80 38 00 0f 85 06 01 00 00 49 8b 5d 30 4c 8d 63 10 4c 89 e0 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85
RSP: 0018:ffff8881d098f350 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffc9000e8db000
RDX: 000000000000be06 RSI: ffffffff815bf202 RDI: ffff88806c772780
RBP: ffff8881d098f3a8 R08: ffff8881dcc92180 R09: 0000000000000000
R10: ffffed100d8ee4a4 R11: ffff88806c772527 R12: 0000000000000010
R13: ffff88806c772780 R14: ffff888215232640 R15: dffffc0000000000
FS:  00007f32dc92c700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000717158 CR3: 00000001f7af0000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400