Warning: Permanently added '10.128.1.48' (ECDSA) to the list of known hosts. executing program [ 70.683997][ T8409] [ 70.686768][ T8409] ============================= [ 70.692131][ T8409] WARNING: suspicious RCU usage [ 70.697003][ T8409] 5.12.0-rc4-syzkaller #0 Not tainted [ 70.702674][ T8409] ----------------------------- [ 70.707560][ T8409] include/net/addrconf.h:314 suspicious rcu_dereference_check() usage! [ 70.715879][ T8409] [ 70.715879][ T8409] other info that might help us debug this: [ 70.715879][ T8409] [ 70.726205][ T8409] [ 70.726205][ T8409] rcu_scheduler_active = 2, debug_locks = 1 [ 70.734339][ T8409] 1 lock held by syz-executor105/8409: [ 70.739875][ T8409] #0: ffff888021b990a0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: ipv6_get_msfilter+0xf8/0x220 [ 70.750074][ T8409] [ 70.750074][ T8409] stack backtrace: [ 70.755980][ T8409] CPU: 0 PID: 8409 Comm: syz-executor105 Not tainted 5.12.0-rc4-syzkaller #0 [ 70.764745][ T8409] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.774881][ T8409] Call Trace: [ 70.778180][ T8409] dump_stack+0x141/0x1d7 [ 70.782517][ T8409] ip6_mc_find_dev_rtnl+0x1be/0x1f0 [ 70.787710][ T8409] ip6_mc_msfget+0x1be/0x830 [ 70.792321][ T8409] ? ipv6_sock_mc_join_ssm+0x30/0x30 [ 70.797599][ T8409] ? lock_release+0x720/0x720 [ 70.802360][ T8409] ? lock_downgrade+0x6e0/0x6e0 [ 70.807204][ T8409] ? do_raw_spin_lock+0x120/0x2b0 [ 70.812243][ T8409] ? mark_held_locks+0x9f/0xe0 [ 70.817016][ T8409] ? __local_bh_enable_ip+0xa0/0x120 [ 70.822311][ T8409] ipv6_get_msfilter+0x10c/0x220 [ 70.827259][ T8409] ? compat_ipv6_get_msfilter+0x3b0/0x3b0 [ 70.832982][ T8409] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 70.838969][ T8409] ? __might_fault+0xd3/0x180 [ 70.843654][ T8409] ? lock_downgrade+0x6e0/0x6e0 [ 70.848508][ T8409] do_ipv6_getsockopt.constprop.0+0x1675/0x2660 [ 70.854751][ T8409] ? do_ipv6_mcast_group_source+0x240/0x240 [ 70.860637][ T8409] ? lock_downgrade+0x6e0/0x6e0 [ 70.865502][ T8409] ? ipv6_getsockopt+0x120/0x270 [ 70.870451][ T8409] ipv6_getsockopt+0x13c/0x270 [ 70.875228][ T8409] ? do_ipv6_getsockopt.constprop.0+0x2660/0x2660 [ 70.881660][ T8409] ? sock_def_destruct+0x10/0x10 [ 70.886601][ T8409] udpv6_getsockopt+0x5d/0x90 [ 70.891438][ T8409] __sys_getsockopt+0x21f/0x5f0 [ 70.896303][ T8409] ? __ia32_sys_setsockopt+0x150/0x150 [ 70.901767][ T8409] __x64_sys_getsockopt+0xba/0x150 [ 70.906873][ T8409] ? syscall_enter_from_user_mode+0x27/0x70 [ 70.912764][ T8409] do_syscall_64+0x2d/0x70 [ 70.917173][ T8409] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 70.923079][ T8409] RIP: 0033:0x43efc9 [ 70.926997][ T8409] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 70.946615][ T8409] RSP: 002b:00007fffb0c07e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 70.955026][ T8409] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043efc9 [ 70.963077][ T8409] RDX: 0000000000000030 RSI: 0000000000000029 RDI: 0000000000000003 [ 70.971060][ T8409] RBP: 0000000000402fb0 R08: 0000000020001000 R09: 0000000000400488 [ 70.983045][ T8409] R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000403040 [ 70.991006][ T8409] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 71.000926][ T8409] [ 71.003274][ T8409] ============================= [ 71.008131][ T8409] WARNING: suspicious RCU usage [ 71.013292][ T8409] 5.12.0-rc4-syzkaller #0 Not tainted [ 71.018682][ T8409] ----------------------------- [ 71.023836][ T8409] net/ipv6/mcast.c:600 suspicious rcu_dereference_protected() usage! [ 71.032013][ T8409] [ 71.032013][ T8409] other info that might help us debug this: [ 71.032013][ T8409] [ 71.042477][ T8409] [ 71.042477][ T8409] rcu_scheduler_active = 2, debug_locks = 1 [ 71.050617][ T8409] 1 lock held by syz-executor105/8409: [ 71.056096][ T8409] #0: ffff888021b990a0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: ipv6_get_msfilter+0xf8/0x220 [ 71.066281][ T8409] [ 71.066281][ T8409] stack backtrace: [ 71.072264][ T8409] CPU: 0 PID: 8409 Comm: syz-executor105 Not tainted 5.12.0-rc4-syzkaller #0 [ 71.081047][ T8409] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.091098][ T8409] Call Trace: [ 71.094379][ T8409] dump_stack+0x141/0x1d7 [ 71.098743][ T8409] ip6_mc_msfget+0x672/0x830 [ 71.103652][ T8409] ? ipv6_sock_mc_join_ssm+0x30/0x30 [ 71.108938][ T8409] ? lock_release+0x720/0x720 [ 71.113624][ T8409] ? lock_downgrade+0x6e0/0x6e0 [ 71.118467][ T8409] ? do_raw_spin_lock+0x120/0x2b0 [ 71.123515][ T8409] ? mark_held_locks+0x9f/0xe0 [ 71.128273][ T8409] ? __local_bh_enable_ip+0xa0/0x120 [ 71.133555][ T8409] ipv6_get_msfilter+0x10c/0x220 [ 71.138485][ T8409] ? compat_ipv6_get_msfilter+0x3b0/0x3b0 [ 71.144258][ T8409] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 71.150277][ T8409] ? __might_fault+0xd3/0x180 [ 71.154980][ T8409] ? lock_downgrade+0x6e0/0x6e0 [ 71.159835][ T8409] do_ipv6_getsockopt.constprop.0+0x1675/0x2660 [ 71.166095][ T8409] ? do_ipv6_mcast_group_source+0x240/0x240 [ 71.172004][ T8409] ? lock_downgrade+0x6e0/0x6e0 [ 71.176879][ T8409] ? ipv6_getsockopt+0x120/0x270 [ 71.181841][ T8409] ipv6_getsockopt+0x13c/0x270 [ 71.186619][ T8409] ? do_ipv6_getsockopt.constprop.0+0x2660/0x2660 [ 71.193048][ T8409] ? sock_def_destruct+0x10/0x10 [ 71.197980][ T8409] udpv6_getsockopt+0x5d/0x90 [ 71.202673][ T8409] __sys_getsockopt+0x21f/0x5f0 [ 71.207518][ T8409] ? __ia32_sys_setsockopt+0x150/0x150 [ 71.212976][ T8409] __x64_sys_getsockopt+0xba/0x150 [ 71.218081][ T8409] ? syscall_enter_from_user_mode+0x27/0x70 [ 71.223995][ T8409] do_syscall_64+0x2d/0x70 [ 71.228410][ T8409] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.234302][ T8409] RIP: 0033:0x43efc9 [ 71.238195][ T8409] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 71.257827][ T8409] RSP: 002b:00007fffb0c07e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 71.266242][ T8409] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043efc9 [ 71.274212][ T8409] RDX: 0000000000000030 RSI: 0000000000000029 RDI: 0000000000000003 [ 71.282224][ T8409] RBP: 0000000000402fb0 R08: 0000000020001000 R09: 0000000000400488 [ 71.290305][ T8409] R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000403040 [ 71.298276][ T8409] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 71.311094][ T8409] [ 71.313473][ T8409] ============================= [ 71.318341][ T8409] WARNING: suspicious RCU usage [ 71.323361][ T8409] 5.12.0-rc4-syzkaller #0 Not tainted [ 71.328740][ T8409] ----------------------------- [ 71.333924][ T8409] net/ipv6/mcast.c:610 suspicious rcu_dereference_protected() usage! [ 71.342104][ T8409] [ 71.342104][ T8409] other info that might help us debug this: [ 71.342104][ T8409] [ 71.352582][ T8409] [ 71.352582][ T8409] rcu_scheduler_active = 2, debug_locks = 1 [ 71.360755][ T8409] 1 lock held by syz-executor105/8409: [ 71.366246][ T8409] #0: ffff888021b990a0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: ipv6_get_msfilter+0xf8/0x220 [ 71.376175][ T8409] [ 71.376175][ T8409] stack backtrace: [ 71.382146][ T8409] CPU: 0 PID: 8409 Comm: syz-executor105 Not tainted 5.12.0-rc4-syzkaller #0 [ 71.390920][ T8409] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.400985][ T8409] Call Trace: [ 71.404273][ T8409] dump_stack+0x141/0x1d7 [ 71.408611][ T8409] ip6_mc_msfget+0x6da/0x830 [ 71.413197][ T8409] ? ipv6_sock_mc_join_ssm+0x30/0x30 [ 71.418497][ T8409] ? lock_release+0x720/0x720 [ 71.423167][ T8409] ? lock_downgrade+0x6e0/0x6e0 [ 71.428012][ T8409] ? do_raw_spin_lock+0x120/0x2b0 [ 71.433053][ T8409] ? mark_held_locks+0x9f/0xe0 [ 71.437899][ T8409] ? __local_bh_enable_ip+0xa0/0x120 [ 71.443182][ T8409] ipv6_get_msfilter+0x10c/0x220 [ 71.448146][ T8409] ? compat_ipv6_get_msfilter+0x3b0/0x3b0 [ 71.453859][ T8409] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 71.459866][ T8409] ? __might_fault+0xd3/0x180 [ 71.464538][ T8409] ? lock_downgrade+0x6e0/0x6e0 [ 71.469410][ T8409] do_ipv6_getsockopt.constprop.0+0x1675/0x2660 [ 71.475854][ T8409] ? do_ipv6_mcast_group_source+0x240/0x240 [ 71.482093][ T8409] ? lock_downgrade+0x6e0/0x6e0 [ 71.486973][ T8409] ? ipv6_getsockopt+0x120/0x270 [ 71.491905][ T8409] ipv6_getsockopt+0x13c/0x270 [ 71.496673][ T8409] ? do_ipv6_getsockopt.constprop.0+0x2660/0x2660 [ 71.503089][ T8409] ? sock_def_destruct+0x10/0x10 [ 71.508042][ T8409] udpv6_getsockopt+0x5d/0x90 [ 71.512742][ T8409] __sys_getsockopt+0x21f/0x5f0 [ 71.517604][ T8409] ? __ia32_sys_setsockopt+0x150/0x150 [ 71.523074][ T8409] __x64_sys_getsockopt+0xba/0x150 [ 71.528191][ T8409] ? syscall_enter_from_user_mode+0x27/0x70 [ 71.534548][ T8409] do_syscall_64+0x2d/0x70 [ 71.538971][ T8409] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.544874][ T8409] RIP: 0033:0x43efc9 [ 71.548776][ T8409] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 71.568405][ T8409] RSP: 002b:00007fffb0c07e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 71.576831][ T8409] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043efc9 [ 71.584800][ T8409] RDX: 0000000000000