netlink: 'syz-executor.3': attribute type 1 has an invalid length. watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:10744] Modules linked in: irq event stamp: 4231303 hardirqs last enabled at (4231302): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (4231303): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (3454): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (3717): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (3717): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 10744 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ec/0x3c0 kernel/locking/lockdep.c:3911 Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b RSP: 0018:ffff8880ba007c90 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3051 RBX: ffff8880421a4100 RCX: 00000000000043cb RDX: dffffc0000000000 RSI: 00000000dc45fa79 RDI: 0000000000000286 RBP: ffff8880957dc9b0 R08: ffffffff8cd39398 R09: 0000000000000002 R10: ffff8880421a49d8 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 00007fce814cd700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7c13741d30 CR3: 0000000057783000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] garp_join_timer+0x20/0xf0 net/802/garp.c:421 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:unwind_next_frame+0x27/0x1400 arch/x86/kernel/unwind_orc.c:397 Code: 00 00 90 48 ba 00 00 00 00 00 fc ff df 41 57 41 56 49 89 fe 41 55 41 54 55 53 48 81 ec e8 00 00 00 48 c7 44 24 48 b3 8a b5 41 <48> 8d 5c 24 48 48 c7 44 24 50 a0 af b6 89 48 c1 eb 03 48 c7 44 24 RSP: 0018:ffff888040bbefc0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000003 RBX: ffffffff8362bbcc RCX: 0000000000000004 RDX: dffffc0000000000 RSI: ffff888040bbef50 RDI: ffff888040bbf0f0 RBP: ffff888040bbf170 R08: 0000000000000001 R09: 0000000000000001 R10: ffff888040bbf14f R11: 0000000000074071 R12: ffff888040bbf188 R13: 0000000000000000 R14: ffff888040bbf0f0 R15: 00000000000000d8 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 kmem_cache_alloc+0x122/0x370 mm/slab.c:3559 mempool_alloc+0x146/0x350 mm/mempool.c:385 bio_alloc_bioset+0x389/0x5e0 block/bio.c:489 bio_alloc include/linux/bio.h:437 [inline] blkdev_issue_flush+0xcc/0x2f0 block/blk-flush.c:559 ext4_sync_file+0xd19/0x1420 fs/ext4/fsync.c:155 vfs_fsync_range+0x13a/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2750 [inline] ext4_file_write_iter+0x726/0xf20 fs/ext4/file.c:283 call_write_iter include/linux/fs.h:1821 [inline] do_iter_readv_writev+0x668/0x790 fs/read_write.c:681 do_iter_write+0x182/0x5d0 fs/read_write.c:960 vfs_iter_write+0x70/0xa0 fs/read_write.c:973 iter_file_splice_write+0x60d/0xbb0 fs/splice.c:750 do_splice_from fs/splice.c:852 [inline] direct_splice_actor+0x115/0x160 fs/splice.c:1025 splice_direct_to_actor+0x33f/0x8d0 fs/splice.c:980 do_splice_direct+0x1a7/0x270 fs/splice.c:1068 do_sendfile+0x550/0xc30 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1502 [inline] __se_sys_sendfile64+0xc4/0x160 fs/read_write.c:1494 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fce82bfd059 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:00007fce814cd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fce82d10370 RCX: 00007fce82bfd059 RDX: 00000000200001c0 RSI: 0000000000000005 RDI: 0000000000000005 RBP: 00007fce82c5708d R08: 0000000000000000 R09: 0000000000000000 R10: 00008080ffffff80 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc6fc4d85f R14: 00007fce814cd300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 17739 Comm: kworker/1:1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: rcu_gp process_srcu RIP: 0010:hlock_class kernel/locking/lockdep.c:145 [inline] RIP: 0010:mark_lock+0x4b/0x1160 kernel/locking/lockdep.c:3106 Code: 48 c1 ea 03 41 bc 01 00 00 00 55 41 d3 e4 48 89 f5 53 48 83 ec 18 0f b6 04 02 84 c0 74 08 3c 01 0f 8e f1 07 00 00 0f b7 45 20 <66> a9 ff 1f 74 7c 48 ba 00 00 00 00 00 fc ff df 4c 89 f1 48 c1 e9 RSP: 0018:ffff888047337c58 EFLAGS: 00000046 RAX: 0000000000000150 RBX: 0000000000000001 RCX: 0000000000000002 RDX: 1ffff11015475192 RSI: ffff8880aa3a8c70 RDI: ffff8880aa3a83c0 RBP: ffff8880aa3a8c70 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 R13: ffff8880aa3a83c0 R14: ffff8880aa3a8c90 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1ac161c998 CR3: 00000000aec2c000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_held_locks+0xa6/0xf0 kernel/locking/lockdep.c:2810 __trace_hardirqs_on_caller kernel/locking/lockdep.c:2831 [inline] lockdep_hardirqs_on+0x288/0x5c0 kernel/locking/lockdep.c:2884 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] _raw_spin_unlock_irq+0x24/0x80 kernel/locking/spinlock.c:192 spin_unlock_irq include/linux/spinlock.h:379 [inline] srcu_reschedule+0x97/0x120 kernel/rcu/srcutree.c:1236 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 ---------------- Code disassembly (best guess): 0: 08 00 or %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 00 add %al,(%rax) 6: 00 48 c1 add %cl,-0x3f(%rax) 9: e8 03 80 3c 10 callq 0x103c8011 e: 00 0f add %cl,(%rdi) 10: 85 b7 01 00 00 48 test %esi,0x48000001(%rdi) 16: 83 3d 09 2e a6 08 00 cmpl $0x0,0x8a62e09(%rip) # 0x8a62e26 1d: 0f 84 2a 01 00 00 je 0x14d 23: 48 8b 7c 24 08 mov 0x8(%rsp),%rdi 28: 57 push %rdi 29: 9d popfq * 2a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction 2f: 48 83 c4 18 add $0x18,%rsp 33: 5b pop %rbx 34: 5d pop %rbp 35: 41 5c pop %r12 37: 41 5d pop %r13 39: 41 5e pop %r14 3b: 41 5f pop %r15 3d: c3 retq 3e: 65 gs 3f: 8b .byte 0x8b