F2FS-fs (loop9): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop9): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop9): Can't find valid F2FS filesystem in 2th superblock Oops: general protection fault, probably for non-canonical address 0xdffffc001fffc000: 0000 [#1] SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x00000000fffe0000-0x00000000fffe0007] CPU: 2 UID: 0 PID: 7222 Comm: syz.9.4062 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:mld_clear_delrec+0x2f0/0x6d0 net/ipv6/mcast.c:840 Code: 20 00 0f 85 b4 03 00 00 49 8b 5d 28 49 c7 45 28 00 00 00 00 48 85 db 75 37 e9 d4 00 00 00 e8 b7 49 71 f7 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 70 03 00 00 48 8b 2b 48 8d 7b 30 48 89 de e8 RSP: 0018:ffffc900033e72d8 EFLAGS: 00010206 RAX: 000000001fffc000 RBX: 00000000fffe0000 RCX: ffffc9000c001000 RDX: 0000000000080000 RSI: ffffffff8a4a4249 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88802c2f4000 R14: ffff888050e69000 R15: dffffc0000000000 FS: 00007f835d36d6c0(0000) GS:ffff8880d68b9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001000 CR3: 00000000467fa000 CR4: 0000000000352ef0 Call Trace: ipv6_mc_destroy_dev+0x49/0x690 net/ipv6/mcast.c:2839 addrconf_ifdown.isra.0+0x1400/0x1aa0 net/ipv6/addrconf.c:3996 addrconf_notify+0x89a/0x19e0 net/ipv6/addrconf.c:3767 notifier_call_chain+0xbc/0x410 kernel/notifier.c:85 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2229 call_netdevice_notifiers_mtu net/core/dev.c:2304 [inline] netif_set_mtu_ext+0x590/0x7d0 net/core/dev.c:9686 netif_set_mtu+0x98/0x140 net/core/dev.c:9707 dev_set_mtu+0xb2/0x260 net/core/dev_api.c:248 macvlan_device_event+0x1ee/0x890 drivers/net/macvlan.c:1812 notifier_call_chain+0xbc/0x410 kernel/notifier.c:85 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2229 call_netdevice_notifiers_mtu net/core/dev.c:2304 [inline] netif_set_mtu_ext+0x590/0x7d0 net/core/dev.c:9686 netif_set_mtu+0x98/0x140 net/core/dev.c:9707 dev_set_mtu+0xb2/0x260 net/core/dev_api.c:248 dev_ifsioc+0xd28/0x1f70 net/core/dev_ioctl.c:572 dev_ioctl+0x223/0x10e0 net/core/dev_ioctl.c:824 sock_do_ioctl+0x19d/0x280 net/socket.c:1252 sock_ioctl+0x227/0x6b0 net/socket.c:1359 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __x64_sys_ioctl+0x18b/0x210 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f835c58ebe9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f835d36d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f835c7b5fa0 RCX: 00007f835c58ebe9 RDX: 0000200000000080 RSI: 0000000000008922 RDI: 0000000000000005 RBP: 00007f835c611e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f835c7b6038 R14: 00007f835c7b5fa0 R15: 00007fff50dbd068 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:mld_clear_delrec+0x2f0/0x6d0 net/ipv6/mcast.c:840 Code: 20 00 0f 85 b4 03 00 00 49 8b 5d 28 49 c7 45 28 00 00 00 00 48 85 db 75 37 e9 d4 00 00 00 e8 b7 49 71 f7 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 70 03 00 00 48 8b 2b 48 8d 7b 30 48 89 de e8 RSP: 0018:ffffc900033e72d8 EFLAGS: 00010206 RAX: 000000001fffc000 RBX: 00000000fffe0000 RCX: ffffc9000c001000 RDX: 0000000000080000 RSI: ffffffff8a4a4249 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88802c2f4000 R14: ffff888050e69000 R15: dffffc0000000000 FS: 00007f835d36d6c0(0000) GS:ffff8880d68b9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001000 CR3: 00000000467fa000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 20 00 and %al,(%rax) 2: 0f 85 b4 03 00 00 jne 0x3bc 8: 49 8b 5d 28 mov 0x28(%r13),%rbx c: 49 c7 45 28 00 00 00 movq $0x0,0x28(%r13) 13: 00 14: 48 85 db test %rbx,%rbx 17: 75 37 jne 0x50 19: e9 d4 00 00 00 jmp 0xf2 1e: e8 b7 49 71 f7 call 0xf77149da 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 0f 85 70 03 00 00 jne 0x3a5 35: 48 8b 2b mov (%rbx),%rbp 38: 48 8d 7b 30 lea 0x30(%rbx),%rdi 3c: 48 89 de mov %rbx,%rsi 3f: e8 .byte 0xe8