IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device team0
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7519 Comm: syz-executor5 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007fabe70bd1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007fabe70bd6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7519 Comm: syz-executor5 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007fabe70bd1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007fabe70bd6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7534 Comm: syz-executor3 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f7ae8c6f1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f7ae8c6f6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7534 Comm: syz-executor3 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f7ae8c6f1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f7ae8c6f6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7545 Comm: syz-executor5 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007fabe70bd1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007fabe70bd6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7545 Comm: syz-executor5 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007fabe70bd1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007fabe70bd6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7554 Comm: syz-executor1 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f9d4af1b1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f9d4af1b6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7554 Comm: syz-executor1 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f9d4af1b1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f9d4af1b6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7561 Comm: syz-executor4 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f4f3e3541a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f4f3e3546bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7561 Comm: syz-executor4 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f4f3e3541a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f4f3e3546bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7572 Comm: syz-executor3 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f7ae8c6f1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f7ae8c6f6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7572 Comm: syz-executor3 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f7ae8c6f1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f7ae8c6f6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7577 Comm: syz-executor2 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f51b15f21a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f51b15f26bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7577 Comm: syz-executor2 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f51b15f21a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051bf00 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f51b15f26bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7591 Comm: syz-executor0 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f12946441a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051c040 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f12946446bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7591 Comm: syz-executor0 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f12946441a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051c040 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f12946446bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7595 Comm: syz-executor5 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007fabe707b1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051c040 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007fabe707b6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7595 Comm: syz-executor5 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007fabe707b1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051c040 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007fabe707b6bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7606 Comm: syz-executor1 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f9d4aed91a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051c040 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f9d4aed96bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7606 Comm: syz-executor1 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f9d4aed91a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051c040 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f9d4aed96bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7591 Comm: syz-executor0 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_del_ex net/core/dev_addr_lists.c:119 [inline]
 __dev_mc_del+0x181/0x700 net/core/dev_addr_lists.c:815
 dev_mc_del+0x6d/0x80 net/core/dev_addr_lists.c:833
 igmp6_group_dropped+0x2d7/0x1430 net/ipv6/mcast.c:707
 __ipv6_dev_mc_dec+0x642/0xb20 net/ipv6/mcast.c:957
 addrconf_leave_solict net/ipv6/addrconf.c:2180 [inline]
 __ipv6_ifa_notify+0x116d/0x1c00 net/ipv6/addrconf.c:6071
 addrconf_ifdown+0x1813/0x27a0 net/ipv6/addrconf.c:3818
 addrconf_notify+0x1d6/0x5b10 net/ipv6/addrconf.c:3629
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 call_netdevice_notifiers_info net/core/dev.c:2040 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2052 [inline]
 call_netdevice_notifiers net/core/dev.c:2066 [inline]
 dev_close_many+0x670/0xb10 net/core/dev.c:1641
 rollback_registered_many+0x896/0x2b00 net/core/dev.c:9473
 rollback_registered net/core/dev.c:9541 [inline]
 unregister_netdevice_queue+0x578/0xac0 net/core/dev.c:10717
 unregister_netdevice include/linux/netdevice.h:2868 [inline]
 __tun_detach+0x23b2/0x2d50 drivers/net/tun.c:662
 tun_detach drivers/net/tun.c:679 [inline]
 tun_chr_close+0xda/0x1c0 drivers/net/tun.c:3354
 __fput+0x5c6/0xcd0 fs/file_table.c:280
 ____fput+0x37/0x40 fs/file_table.c:313
 task_work_run+0x14d/0x260 kernel/task_work.c:140
 get_signal+0x2f7a/0x3150 kernel/signal.c:2554
 arch_do_signal_or_restart+0xa5/0xe40 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x2c2/0x4e0 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294
 do_syscall_64+0xc8/0x120 arch/x86/entry/common.c:58
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f12946441a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffef RBX: 000000000051c040 RCX: 000000000045f5a9
RDX: 0000000020000000 RSI: 00000000400454ca RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ebc10 R14: 00000000004ade1d R15: 00007f12946446bc

Local variable ----buf@igmp6_group_dropped created at:
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7591 Comm: syz-executor0 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_del_ex net/core/dev_addr_lists.c:119 [inline]
 __dev_mc_del+0x181/0x700 net/core/dev_addr_lists.c:815
 dev_mc_del+0x6d/0x80 net/core/dev_addr_lists.c:833
 igmp6_group_dropped+0x2d7/0x1430 net/ipv6/mcast.c:707
 __ipv6_dev_mc_dec+0x642/0xb20 net/ipv6/mcast.c:957
 addrconf_leave_solict net/ipv6/addrconf.c:2180 [inline]
 __ipv6_ifa_notify+0x116d/0x1c00 net/ipv6/addrconf.c:6071
 addrconf_ifdown+0x1813/0x27a0 net/ipv6/addrconf.c:3818
 addrconf_notify+0x1d6/0x5b10 net/ipv6/addrconf.c:3629
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 call_netdevice_notifiers_info net/core/dev.c:2040 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2052 [inline]
 call_netdevice_notifiers net/core/dev.c:2066 [inline]
 dev_close_many+0x670/0xb10 net/core/dev.c:1641
 rollback_registered_many+0x896/0x2b00 net/core/dev.c:9473
 rollback_registered net/core/dev.c:9541 [inline]
 unregister_netdevice_queue+0x578/0xac0 net/core/dev.c:10717
 unregister_netdevice include/linux/netdevice.h:2868 [inline]
 __tun_detach+0x23b2/0x2d50 drivers/net/tun.c:662
 tun_detach drivers/net/tun.c:679 [inline]
 tun_chr_close+0xda/0x1c0 drivers/net/tun.c:3354
 __fput+0x5c6/0xcd0 fs/file_table.c:280
 ____fput+0x37/0x40 fs/file_table.c:313
 task_work_run+0x14d/0x260 kernel/task_work.c:140
 get_signal+0x2f7a/0x3150 kernel/signal.c:2554
 arch_do_signal_or_restart+0xa5/0xe40 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x2c2/0x4e0 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294
 do_syscall_64+0xc8/0x120 arch/x86/entry/common.c:58
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f12946441a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffef RBX: 000000000051c040 RCX: 000000000045f5a9
RDX: 0000000020000000 RSI: 00000000400454ca RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ebc10 R14: 00000000004ade1d R15: 00007f12946446bc

Local variable ----buf@igmp6_group_dropped created at:
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7590 Comm: syz-executor5 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_del_ex net/core/dev_addr_lists.c:119 [inline]
 __dev_mc_del+0x181/0x700 net/core/dev_addr_lists.c:815
 dev_mc_del+0x6d/0x80 net/core/dev_addr_lists.c:833
 igmp6_group_dropped+0x2d7/0x1430 net/ipv6/mcast.c:707
 __ipv6_dev_mc_dec+0x642/0xb20 net/ipv6/mcast.c:957
 addrconf_leave_solict net/ipv6/addrconf.c:2180 [inline]
 __ipv6_ifa_notify+0x116d/0x1c00 net/ipv6/addrconf.c:6071
 addrconf_ifdown+0x1813/0x27a0 net/ipv6/addrconf.c:3818
 addrconf_notify+0x1d6/0x5b10 net/ipv6/addrconf.c:3629
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 call_netdevice_notifiers_info net/core/dev.c:2040 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2052 [inline]
 call_netdevice_notifiers net/core/dev.c:2066 [inline]
 dev_close_many+0x670/0xb10 net/core/dev.c:1641
 rollback_registered_many+0x896/0x2b00 net/core/dev.c:9473
 rollback_registered net/core/dev.c:9541 [inline]
 unregister_netdevice_queue+0x578/0xac0 net/core/dev.c:10717
 unregister_netdevice include/linux/netdevice.h:2868 [inline]
 __tun_detach+0x23b2/0x2d50 drivers/net/tun.c:662
 tun_detach drivers/net/tun.c:679 [inline]
 tun_chr_close+0xda/0x1c0 drivers/net/tun.c:3354
 __fput+0x5c6/0xcd0 fs/file_table.c:280
 ____fput+0x37/0x40 fs/file_table.c:313
 task_work_run+0x14d/0x260 kernel/task_work.c:140
 get_signal+0x2f7a/0x3150 kernel/signal.c:2554
 arch_do_signal_or_restart+0xa5/0xe40 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x2c2/0x4e0 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294
 do_syscall_64+0xc8/0x120 arch/x86/entry/common.c:58
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007fabe709c1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffef RBX: 000000000051bfa0 RCX: 000000000045f5a9
RDX: 0000000020000000 RSI: 00000000400454ca RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ebc10 R14: 00000000004ade1d R15: 00007fabe709c6bc

Local variable ----buf@igmp6_group_dropped created at:
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7590 Comm: syz-executor5 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_del_ex net/core/dev_addr_lists.c:119 [inline]
 __dev_mc_del+0x181/0x700 net/core/dev_addr_lists.c:815
 dev_mc_del+0x6d/0x80 net/core/dev_addr_lists.c:833
 igmp6_group_dropped+0x2d7/0x1430 net/ipv6/mcast.c:707
 __ipv6_dev_mc_dec+0x642/0xb20 net/ipv6/mcast.c:957
 addrconf_leave_solict net/ipv6/addrconf.c:2180 [inline]
 __ipv6_ifa_notify+0x116d/0x1c00 net/ipv6/addrconf.c:6071
 addrconf_ifdown+0x1813/0x27a0 net/ipv6/addrconf.c:3818
 addrconf_notify+0x1d6/0x5b10 net/ipv6/addrconf.c:3629
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 call_netdevice_notifiers_info net/core/dev.c:2040 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2052 [inline]
 call_netdevice_notifiers net/core/dev.c:2066 [inline]
 dev_close_many+0x670/0xb10 net/core/dev.c:1641
 rollback_registered_many+0x896/0x2b00 net/core/dev.c:9473
 rollback_registered net/core/dev.c:9541 [inline]
 unregister_netdevice_queue+0x578/0xac0 net/core/dev.c:10717
 unregister_netdevice include/linux/netdevice.h:2868 [inline]
 __tun_detach+0x23b2/0x2d50 drivers/net/tun.c:662
 tun_detach drivers/net/tun.c:679 [inline]
 tun_chr_close+0xda/0x1c0 drivers/net/tun.c:3354
 __fput+0x5c6/0xcd0 fs/file_table.c:280
 ____fput+0x37/0x40 fs/file_table.c:313
 task_work_run+0x14d/0x260 kernel/task_work.c:140
 get_signal+0x2f7a/0x3150 kernel/signal.c:2554
 arch_do_signal_or_restart+0xa5/0xe40 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x2c2/0x4e0 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294
 do_syscall_64+0xc8/0x120 arch/x86/entry/common.c:58
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007fabe709c1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffef RBX: 000000000051bfa0 RCX: 000000000045f5a9
RDX: 0000000020000000 RSI: 00000000400454ca RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ebc10 R14: 00000000004ade1d R15: 00007fabe709c6bc

Local variable ----buf@igmp6_group_dropped created at:
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7614 Comm: syz-executor1 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_del_ex net/core/dev_addr_lists.c:119 [inline]
 __dev_mc_del+0x181/0x700 net/core/dev_addr_lists.c:815
 dev_mc_del+0x6d/0x80 net/core/dev_addr_lists.c:833
 igmp6_group_dropped+0x2d7/0x1430 net/ipv6/mcast.c:707
 __ipv6_dev_mc_dec+0x642/0xb20 net/ipv6/mcast.c:957
 addrconf_leave_solict net/ipv6/addrconf.c:2180 [inline]
 __ipv6_ifa_notify+0x116d/0x1c00 net/ipv6/addrconf.c:6071
 addrconf_ifdown+0x1813/0x27a0 net/ipv6/addrconf.c:3818
 addrconf_notify+0x1d6/0x5b10 net/ipv6/addrconf.c:3629
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 call_netdevice_notifiers_info net/core/dev.c:2040 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2052 [inline]
 call_netdevice_notifiers net/core/dev.c:2066 [inline]
 dev_close_many+0x670/0xb10 net/core/dev.c:1641
 rollback_registered_many+0x896/0x2b00 net/core/dev.c:9473
 rollback_registered net/core/dev.c:9541 [inline]
 unregister_netdevice_queue+0x578/0xac0 net/core/dev.c:10717
 unregister_netdevice include/linux/netdevice.h:2868 [inline]
 __tun_detach+0x23b2/0x2d50 drivers/net/tun.c:662
 tun_detach drivers/net/tun.c:679 [inline]
 tun_chr_close+0xda/0x1c0 drivers/net/tun.c:3354
 __fput+0x5c6/0xcd0 fs/file_table.c:280
 ____fput+0x37/0x40 fs/file_table.c:313
 task_work_run+0x14d/0x260 kernel/task_work.c:140
 get_signal+0x2f7a/0x3150 kernel/signal.c:2554
 arch_do_signal_or_restart+0xa5/0xe40 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x2c2/0x4e0 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294
 do_syscall_64+0xc8/0x120 arch/x86/entry/common.c:58
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f9d4ae971a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffff0 RBX: 000000000051c180 RCX: 000000000045f5a9
RDX: 000000000000030a RSI: 00000000400454cd RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ebc40 R14: 00000000004ade41 R15: 00007f9d4ae976bc

Local variable ----buf@igmp6_group_dropped created at:
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 0 PID: 7614 Comm: syz-executor1 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_del_ex net/core/dev_addr_lists.c:119 [inline]
 __dev_mc_del+0x181/0x700 net/core/dev_addr_lists.c:815
 dev_mc_del+0x6d/0x80 net/core/dev_addr_lists.c:833
 igmp6_group_dropped+0x2d7/0x1430 net/ipv6/mcast.c:707
 __ipv6_dev_mc_dec+0x642/0xb20 net/ipv6/mcast.c:957
 addrconf_leave_solict net/ipv6/addrconf.c:2180 [inline]
 __ipv6_ifa_notify+0x116d/0x1c00 net/ipv6/addrconf.c:6071
 addrconf_ifdown+0x1813/0x27a0 net/ipv6/addrconf.c:3818
 addrconf_notify+0x1d6/0x5b10 net/ipv6/addrconf.c:3629
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 call_netdevice_notifiers_info net/core/dev.c:2040 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2052 [inline]
 call_netdevice_notifiers net/core/dev.c:2066 [inline]
 dev_close_many+0x670/0xb10 net/core/dev.c:1641
 rollback_registered_many+0x896/0x2b00 net/core/dev.c:9473
 rollback_registered net/core/dev.c:9541 [inline]
 unregister_netdevice_queue+0x578/0xac0 net/core/dev.c:10717
 unregister_netdevice include/linux/netdevice.h:2868 [inline]
 __tun_detach+0x23b2/0x2d50 drivers/net/tun.c:662
 tun_detach drivers/net/tun.c:679 [inline]
 tun_chr_close+0xda/0x1c0 drivers/net/tun.c:3354
 __fput+0x5c6/0xcd0 fs/file_table.c:280
 ____fput+0x37/0x40 fs/file_table.c:313
 task_work_run+0x14d/0x260 kernel/task_work.c:140
 get_signal+0x2f7a/0x3150 kernel/signal.c:2554
 arch_do_signal_or_restart+0xa5/0xe40 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x2c2/0x4e0 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294
 do_syscall_64+0xc8/0x120 arch/x86/entry/common.c:58
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f9d4ae971a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffff0 RBX: 000000000051c180 RCX: 000000000045f5a9
RDX: 000000000000030a RSI: 00000000400454cd RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ebc40 R14: 00000000004ade41 R15: 00007f9d4ae976bc

Local variable ----buf@igmp6_group_dropped created at:
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
 igmp6_group_dropped+0xa1/0x1430 net/ipv6/mcast.c:697
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7636 Comm: syz-executor4 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792
 ip_mc_filter_add net/ipv4/igmp.c:1142 [inline]
 igmp_group_added+0x293/0xbf0 net/ipv4/igmp.c:1328
 ____ip_mc_inc_group+0xe5e/0xf40 net/ipv4/igmp.c:1461
 __ip_mc_inc_group net/ipv4/igmp.c:1470 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1476 [inline]
 ip_mc_up+0x1c8/0x3f0 net/ipv4/igmp.c:1775
 inetdev_event+0x1da6/0x1e60 net/ipv4/devinet.c:1573
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:410
 __dev_notify_flags+0x4ff/0xa60 net/core/dev.c:2040
 dev_change_flags+0x1d6/0x260 net/core/dev.c:8555
 dev_ifsioc+0x535/0x11f0 net/core/dev_ioctl.c:265
 dev_ioctl+0x9d2/0x1500 net/core/dev_ioctl.c:511
 sock_do_ioctl+0x3e9/0x5e0 net/socket.c:1060
 sock_ioctl+0x90a/0xde0 net/socket.c:1177
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x2c4/0x400 fs/ioctl.c:739
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:739
 do_syscall_64+0xa2/0x120 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f5a9
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:00007f4f3e3121a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000051c040 RCX: 000000000045f5a9
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ecf90 R14: 00000000004aedd2 R15: 00007f4f3e3126bc

Local variable ----buf.i@igmp_group_added created at:
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
 ip_mc_filter_add net/ipv4/igmp.c:1131 [inline]
 igmp_group_added+0x147/0xbf0 net/ipv4/igmp.c:1328
=====================================================
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:947 [inline]
BUG: KMSAN: uninit-value in bcmp+0x127/0x180 lib/string.c:968
CPU: 1 PID: 7636 Comm: syz-executor4 Tainted: G    B             5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 memcmp lib/string.c:947 [inline]
 bcmp+0x127/0x180 lib/string.c:968
 __hw_addr_add_ex net/core/dev_addr_lists.c:57 [inline]
 __dev_mc_add+0x1fd/0x8e0 net/core/dev_addr_lists.c:775
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:792