ci starts bisection 2023-02-15 11:45:32.371652785 +0000 UTC m=+9242.881223748
bisecting fixing commit since 1a61b828566fba088d3baa0dc3e440b51fdf9ce2
building syzkaller on 0042f2b4c00ce1ceeaa44a0147909fe3a6f86c5c
ensuring issue is reproducible on original commit 1a61b828566fba088d3baa0dc3e440b51fdf9ce2

testing commit 1a61b828566fba088d3baa0dc3e440b51fdf9ce2 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 253cbe61249af72284a83a77c2a8df18cc084eeb71d519f0ed120243d57dff4f
all runs: crashed: WARNING in inc_nlink
testing current HEAD e1c04510f521e853019afeca2a5991a5ef8d6a5b
testing commit e1c04510f521e853019afeca2a5991a5ef8d6a5b gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 83cf76e538e241337bda11b4bae8ec6383b3a7c7d4471d461869dead4386716b
run #0: crashed: INFO: trying to register non-static key in net_free
run #1: crashed: unregister_netdevice: waiting for DEV to become free
run #2: crashed: unregister_netdevice: waiting for DEV to become free
run #3: crashed: unregister_netdevice: waiting for DEV to become free
run #4: crashed: unregister_netdevice: waiting for DEV to become free
run #5: crashed: unregister_netdevice: waiting for DEV to become free
run #6: crashed: unregister_netdevice: waiting for DEV to become free
run #7: crashed: INFO: trying to register non-static key in net_free
run #8: crashed: unregister_netdevice: waiting for DEV to become free
run #9: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m19.91307752s (build: 13m56.163820157s, test: 8m32.162790674s)
the crash still happens on HEAD
commit msg: Merge tag 'pm-6.2-rc9' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for lo to become free. Usage count = 2
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4020 [inline]
 netdev_hold include/linux/netdevice.h:4049 [inline]
 ipv6_add_dev+0x3c1/0x1160 net/ipv6/addrconf.c:401
 addrconf_notify+0x40d/0x12d0 net/ipv6/addrconf.c:3552
 notifier_call_chain+0x94/0x170 kernel/notifier.c:87
 call_netdevice_notifiers_extack net/core/dev.c:1982 [inline]
 call_netdevice_notifiers net/core/dev.c:1996 [inline]
 register_netdevice+0xcbd/0x1400 net/core/dev.c:10078
 register_netdev+0x17/0x30 net/core/dev.c:10173
 loopback_net_init+0x6c/0x120 drivers/net/loopback.c:219
 ops_init+0x96/0x580 net/core/net_namespace.c:135
 setup_net+0x74a/0xd60 net/core/net_namespace.c:333
 copy_net_ns+0x2a4/0x540 net/core/net_namespace.c:483
 create_new_namespaces+0x35a/0x920 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0x86/0x1a0 kernel/nsproxy.c:228
 ksys_unshare+0x309/0x6b0 kernel/fork.c:3202
 __do_sys_unshare kernel/fork.c:3273 [inline]
 __se_sys_unshare kernel/fork.c:3271 [inline]
 __x64_sys_unshare+0x28/0x40 kernel/fork.c:3271
 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+0x63/0xcd