netlink: 28 bytes leftover after parsing attributes in process `syz-executor.5'. bridge0: port 2(veth1) entered blocking state bridge0: port 2(veth1) entered disabled state general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 1 PID: 18905 Comm: syz-executor.5 Tainted: G W 5.15.72-syzkaller-04310-g43eb03f7ce81 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:__seqprop_raw_spinlock_sequence include/linux/seqlock.h:276 [inline] RIP: 0010:hrtimer_active kernel/time/hrtimer.c:1611 [inline] RIP: 0010:hrtimer_try_to_cancel+0x8a/0xf60 kernel/time/hrtimer.c:1328 Code: e8 6b 07 10 00 48 8b 5d b8 48 8b 45 a0 42 80 3c 28 00 74 08 48 89 df e8 84 53 52 00 4c 8b 33 4d 8d 66 10 4d 89 e7 49 c1 ef 03 <43> 8a 04 2f 84 c0 0f 85 1e 01 00 00 41 8b 1c 24 89 de 83 e6 01 31 RSP: 0018:ffffc90000bd7440 EFLAGS: 00010202 RAX: 1ffff11022047029 RBX: ffff888110238148 RCX: 1ffff1102204702a RDX: ffffc90007089000 RSI: 0000000000001d4e RDI: 0000000000001d4f RBP: ffffc90000bd74e8 R08: ffffffff83e9c8ff R09: ffffed1022047003 R10: ffffed1022047003 R11: 1ffff11022047002 R12: 0000000000000010 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000002 FS: 00007fced626a700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d721000 CR3: 000000010feb5000 CR4: 00000000003506a0 Call Trace: hrtimer_cancel+0x17/0x60 kernel/time/hrtimer.c:1443 napi_disable+0xf7/0x140 net/core/dev.c:6936 veth_napi_del_range drivers/net/veth.c:982 [inline] veth_napi_del drivers/net/veth.c:997 [inline] veth_set_features+0x1a8/0x2e0 drivers/net/veth.c:1425 __netdev_update_features+0x870/0x1c20 net/core/dev.c:9986 netdev_update_features+0x6d/0x1c0 net/core/dev.c:10060 dev_disable_lro+0x47/0x1d0 net/core/dev.c:1649 br_add_if+0x531/0xef0 net/bridge/br_if.c:645 add_del_if net/bridge/br_ioctl.c:98 [inline] br_ioctl_stub+0x22b/0x8d0 net/bridge/br_ioctl.c:407 br_ioctl_call+0x7c/0xb0 net/socket.c:1095 dev_ifsioc+0x894/0x1160 net/core/dev_ioctl.c:386 dev_ioctl+0x523/0xe30 net/core/dev_ioctl.c:587 sock_do_ioctl+0x34d/0x5b0 net/socket.c:1135 sock_ioctl+0x457/0x740 net/socket.c:1238 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0x115/0x190 fs/ioctl.c:860 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fced70f65a9 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fced626a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fced7216f80 RCX: 00007fced70f65a9 RDX: 0000000020000000 RSI: 00000000000089a2 RDI: 0000000000000004 RBP: 00007fced7151580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffff40fd99f R14: 00007fced626a300 R15: 0000000000022000 Modules linked in: ---[ end trace 4281c5a95aec96bc ]--- RIP: 0010:__seqprop_raw_spinlock_sequence include/linux/seqlock.h:276 [inline] RIP: 0010:hrtimer_active kernel/time/hrtimer.c:1611 [inline] RIP: 0010:hrtimer_try_to_cancel+0x8a/0xf60 kernel/time/hrtimer.c:1328 Code: e8 6b 07 10 00 48 8b 5d b8 48 8b 45 a0 42 80 3c 28 00 74 08 48 89 df e8 84 53 52 00 4c 8b 33 4d 8d 66 10 4d 89 e7 49 c1 ef 03 <43> 8a 04 2f 84 c0 0f 85 1e 01 00 00 41 8b 1c 24 89 de 83 e6 01 31 RSP: 0018:ffffc90000bd7440 EFLAGS: 00010202 RAX: 1ffff11022047029 RBX: ffff888110238148 RCX: 1ffff1102204702a RDX: ffffc90007089000 RSI: 0000000000001d4e RDI: 0000000000001d4f RBP: ffffc90000bd74e8 R08: ffffffff83e9c8ff R09: ffffed1022047003 R10: ffffed1022047003 R11: 1ffff11022047002 R12: 0000000000000010 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000002 FS: 00007fced626a700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200bd038 CR3: 000000010feb5000 CR4: 00000000003506a0 ---------------- Code disassembly (best guess): 0: e8 6b 07 10 00 callq 0x100770 5: 48 8b 5d b8 mov -0x48(%rbp),%rbx 9: 48 8b 45 a0 mov -0x60(%rbp),%rax d: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 12: 74 08 je 0x1c 14: 48 89 df mov %rbx,%rdi 17: e8 84 53 52 00 callq 0x5253a0 1c: 4c 8b 33 mov (%rbx),%r14 1f: 4d 8d 66 10 lea 0x10(%r14),%r12 23: 4d 89 e7 mov %r12,%r15 26: 49 c1 ef 03 shr $0x3,%r15 * 2a: 43 8a 04 2f mov (%r15,%r13,1),%al <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 1e 01 00 00 jne 0x154 36: 41 8b 1c 24 mov (%r12),%ebx 3a: 89 de mov %ebx,%esi 3c: 83 e6 01 and $0x1,%esi 3f: 31 .byte 0x31