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WARNING: CPU: 1 PID: 31480 at kernel/workqueue.c:3037 __flush_work+0x8b2/0xab0 kernel/workqueue.c:3037
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 31480 Comm: syz-executor.5 Not tainted 5.9.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x198/0x1fd lib/dump_stack.c:118
 panic+0x347/0x7c0 kernel/panic.c:231
 __warn.cold+0x20/0x46 kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:__flush_work+0x8b2/0xab0 kernel/workqueue.c:3037
Code: e3 08 48 0f ba 28 03 48 8b 95 70 fe ff ff 81 cb e0 01 00 00 e9 b8 fa ff ff e8 1a d3 27 00 0f 0b e9 81 fc ff ff e8 0e d3 27 00 <0f> 0b 45 31 f6 e9 72 fc ff ff e8 ff d2 27 00 4c 89 ef e8 d7 cd a9
RSP: 0018:ffffc900164a7658 EFLAGS: 00010246
RAX: 0000000000040000 RBX: dffffc0000000000 RCX: ffffc90012f83000
RDX: 0000000000040000 RSI: ffffffff814c77f2 RDI: 0000000000000001
RBP: ffffc900164a77e8 R08: 0000000000000001 R09: ffffffff8c5f19ef
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000
 __cancel_work_timer+0x5bd/0x6c0 kernel/workqueue.c:3133
 rhashtable_free_and_destroy+0x2b/0x920 lib/rhashtable.c:1137
 seg6_net_exit+0x38/0x80 net/ipv6/seg6.c:391
 ops_exit_list+0xb0/0x160 net/core/net_namespace.c:186
 setup_net+0x502/0x850 net/core/net_namespace.c:364
 copy_net_ns+0x2cf/0x5e0 net/core/net_namespace.c:482
 create_new_namespaces+0x3f6/0xb10 kernel/nsproxy.c:110
 copy_namespaces+0x385/0x470 kernel/nsproxy.c:179
 copy_process+0x294b/0x6920 kernel/fork.c:2072
 _do_fork+0xe8/0xb10 kernel/fork.c:2428
 __do_compat_sys_ia32_clone+0xac/0xe0 arch/x86/kernel/sys_ia32.c:254
 do_syscall_32_irqs_on arch/x86/entry/common.c:84 [inline]
 __do_fast_syscall_32+0x57/0x80 arch/x86/entry/common.c:126
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:149
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f9f549
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f55990cc EFLAGS: 00000296 ORIG_RAX: 0000000000000078
RAX: ffffffffffffffda RBX: 00000000e1004d7c RCX: 0000000000000000
RDX: 0000000099999999 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..