loop0: detected capacity change from 0 to 256 exfat: Unknown parameter 'ÿÿ½6+JüòPôÛ%Šç‚}·Â°°1ék/ÌÐ%âiSvsØÜÎèH·MØÛ¥@4Dr!ý«T4-D°Ci… ¬—®¤¶ÈÍœ¶'Àqm|·MZ?–ºD6…mHÓǘeäƒ+þ ÷¤@šzm‘' Oops: general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 0 UID: 0 PID: 5343 Comm: syz.0.0 Not tainted 6.16.0-rc5-syzkaller-00038-g733923397fd9 #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:qdisc_tree_reduce_backlog+0x223/0x480 net/sched/sch_api.c:806 Code: 89 ef e8 50 04 ab f8 4d 89 ef 85 db 74 0d e8 94 81 47 f8 4c 89 f5 e9 88 00 00 00 48 8b 6d 00 48 8d 45 20 48 89 c3 48 c1 eb 03 <42> 80 3c 33 00 48 89 04 24 74 0d 48 8b 3c 24 e8 19 04 ab f8 48 8b RSP: 0018:ffffc9000d4bf0e8 EFLAGS: 00010202 RAX: 0000000000000020 RBX: 0000000000000004 RCX: 0000000000000002 RDX: ffff888034ab0000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff888034ab0000 R09: 0000000000000002 R10: 00000000ffffffff R11: 0000000000000002 R12: 00000000000afff2 R13: ffff88805246d800 R14: dffffc0000000000 R15: ffff88805246d800 FS: 00007fd1221ad6c0(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002000 CR3: 0000000032d7a000 CR4: 0000000000352ef0 Call Trace: codel_change+0x859/0xae0 net/sched/sch_codel.c:153 codel_init+0x1f7/0x3e0 net/sched/sch_codel.c:172 qdisc_create+0x7a9/0xea0 net/sched/sch_api.c:1324 __tc_modify_qdisc net/sched/sch_api.c:1749 [inline] tc_modify_qdisc+0x1426/0x2010 net/sched/sch_api.c:1813 rtnetlink_rcv_msg+0x77c/0xb70 net/core/rtnetlink.c:6953 netlink_rcv_skb+0x205/0x470 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x758/0x8d0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x219/0x270 net/socket.c:727 ____sys_sendmsg+0x505/0x830 net/socket.c:2566 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2655 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd12138e929 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:00007fd1221ad038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd1215b6160 RCX: 00007fd12138e929 RDX: 0000000000000800 RSI: 0000200000000100 RDI: 000000000000000b RBP: 00007fd121410b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd1215b6160 R15: 00007ffdc6a35918 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:qdisc_tree_reduce_backlog+0x223/0x480 net/sched/sch_api.c:806 Code: 89 ef e8 50 04 ab f8 4d 89 ef 85 db 74 0d e8 94 81 47 f8 4c 89 f5 e9 88 00 00 00 48 8b 6d 00 48 8d 45 20 48 89 c3 48 c1 eb 03 <42> 80 3c 33 00 48 89 04 24 74 0d 48 8b 3c 24 e8 19 04 ab f8 48 8b RSP: 0018:ffffc9000d4bf0e8 EFLAGS: 00010202 RAX: 0000000000000020 RBX: 0000000000000004 RCX: 0000000000000002 RDX: ffff888034ab0000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff888034ab0000 R09: 0000000000000002 R10: 00000000ffffffff R11: 0000000000000002 R12: 00000000000afff2 R13: ffff88805246d800 R14: dffffc0000000000 R15: ffff88805246d800 FS: 00007fd1221ad6c0(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002000 CR3: 0000000032d7a000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 89 ef mov %ebp,%edi 2: e8 50 04 ab f8 call 0xf8ab0457 7: 4d 89 ef mov %r13,%r15 a: 85 db test %ebx,%ebx c: 74 0d je 0x1b e: e8 94 81 47 f8 call 0xf84781a7 13: 4c 89 f5 mov %r14,%rbp 16: e9 88 00 00 00 jmp 0xa3 1b: 48 8b 6d 00 mov 0x0(%rbp),%rbp 1f: 48 8d 45 20 lea 0x20(%rbp),%rax 23: 48 89 c3 mov %rax,%rbx 26: 48 c1 eb 03 shr $0x3,%rbx * 2a: 42 80 3c 33 00 cmpb $0x0,(%rbx,%r14,1) <-- trapping instruction 2f: 48 89 04 24 mov %rax,(%rsp) 33: 74 0d je 0x42 35: 48 8b 3c 24 mov (%rsp),%rdi 39: e8 19 04 ab f8 call 0xf8ab0457 3e: 48 rex.W 3f: 8b .byte 0x8b