general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 PID: 12431 Comm: syz-executor.4 Not tainted 5.14.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__seqprop_raw_spinlock_sequence include/linux/seqlock.h:276 [inline]
RIP: 0010:hrtimer_active+0x6b/0x1f0 kernel/time/hrtimer.c:1463
Code: 01 f0 48 89 44 24 10 e8 c3 71 10 00 48 8b 44 24 08 80 38 00 0f 85 71 01 00 00 49 8b 6d 30 48 8d 45 10 48 89 04 24 48 c1 e8 03 <42> 0f b6 04 30 84 c0 74 08 3c 03 0f 8e 42 01 00 00 8b 5d 10 31 ff
RSP: 0018:ffffc90001a0f968 EFLAGS: 00010202
RAX: 0000000000000002 RBX: ffffe8ffffccf2e8 RCX: ffffc900133c5000
RDX: 0000000000040000 RSI: ffffffff81652b8d RDI: ffffe8ffffccf2e8
RBP: 0000000000000000 R08: 0000000000000001 R09: 00000000ffccf100
R10: ffffffff87185d2d R11: 0000000000000000 R12: 0000000000000000
R13: ffffe8ffffccf2e8 R14: dffffc0000000000 R15: dffffc0000000000
FS:  00007fe00992b700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4218043d30 CR3: 0000000034347000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hrtimer_try_to_cancel+0x21/0x1e0 kernel/time/hrtimer.c:1180
 hrtimer_cancel+0x13/0x40 kernel/time/hrtimer.c:1295
 napi_disable+0xc3/0x110 net/core/dev.c:6992
 gro_cells_destroy net/core/gro_cells.c:101 [inline]
 gro_cells_destroy+0x10d/0x360 net/core/gro_cells.c:92
 ip_tunnel_dev_free+0x15/0x60 net/ipv4/ip_tunnel.c:1010
 netdev_run_todo+0x6b4/0xa80 net/core/dev.c:10661
 ip_tunnel_delete_nets+0x3a4/0x5b0 net/ipv4/ip_tunnel.c:1124
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:178
 setup_net+0x639/0xa30 net/core/net_namespace.c:356
 copy_net_ns+0x319/0x760 net/core/net_namespace.c:474
 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226
 ksys_unshare+0x445/0x920 kernel/fork.c:3003
 __do_sys_unshare kernel/fork.c:3077 [inline]
 __se_sys_unshare kernel/fork.c:3075 [inline]
 __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3075
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe00992b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 000000000056c318 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006c020000
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c318
R13: 00007ffda485e10f R14: 00007fe00992b300 R15: 0000000000022000
Modules linked in:
---[ end trace 61c974c0361e62e9 ]---
RIP: 0010:__seqprop_raw_spinlock_sequence include/linux/seqlock.h:276 [inline]
RIP: 0010:hrtimer_active+0x6b/0x1f0 kernel/time/hrtimer.c:1463
Code: 01 f0 48 89 44 24 10 e8 c3 71 10 00 48 8b 44 24 08 80 38 00 0f 85 71 01 00 00 49 8b 6d 30 48 8d 45 10 48 89 04 24 48 c1 e8 03 <42> 0f b6 04 30 84 c0 74 08 3c 03 0f 8e 42 01 00 00 8b 5d 10 31 ff
RSP: 0018:ffffc90001a0f968 EFLAGS: 00010202
RAX: 0000000000000002 RBX: ffffe8ffffccf2e8 RCX: ffffc900133c5000
RDX: 0000000000040000 RSI: ffffffff81652b8d RDI: ffffe8ffffccf2e8
RBP: 0000000000000000 R08: 0000000000000001 R09: 00000000ffccf100
R10: ffffffff87185d2d R11: 0000000000000000 R12: 0000000000000000
R13: ffffe8ffffccf2e8 R14: dffffc0000000000 R15: dffffc0000000000
FS:  00007fe00992b700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fafc44ec718 CR3: 0000000034347000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400