netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:5589] Modules linked in: irq event stamp: 1646179 hardirqs last enabled at (1646178): [] slab_alloc_node mm/slab.c:3334 [inline] hardirqs last enabled at (1646178): [] kmem_cache_alloc_node_trace+0x2da/0x3b0 mm/slab.c:3666 hardirqs last disabled at (1646179): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (31722): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (32483): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (32483): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 5589 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:orc_ip arch/x86/kernel/unwind_orc.c:26 [inline] RIP: 0010:__orc_find+0x6f/0xf0 arch/x86/kernel/unwind_orc.c:48 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 48 48 63 03 48 01 RSP: 0018:ffff8880ba007760 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1670f72 RBX: ffffffff8b387b90 RCX: ffffffff818edd7d RDX: 0000000000000000 RSI: ffffffff8b9915ca RDI: ffffffff8b387b90 RBP: ffffffff8b387b90 R08: 0000000000000000 R09: ffffffff8b9915ca R10: ffff8880ba007937 R11: 0000000000074071 R12: ffffffff8b387b90 R13: ffffffff8b387b90 R14: ffffffff8b387b90 R15: dffffc0000000000 FS: 00005555566af400(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020003038 CR3: 000000008cb34000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: orc_find arch/x86/kernel/unwind_orc.c:159 [inline] unwind_next_frame+0x339/0x1400 arch/x86/kernel/unwind_orc.c:422 __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 __do_kmalloc_node mm/slab.c:3689 [inline] __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0xae/0x560 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] mrp_pdu_init net/802/mrp.c:316 [inline] mrp_pdu_append_vecattr_event+0x7d2/0x1050 net/802/mrp.c:415 mrp_attr_event+0x15d/0x220 net/802/mrp.c:510 mrp_mad_event net/802/mrp.c:590 [inline] mrp_join_timer+0x5a/0xc0 net/802/mrp.c:607 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: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:ffff88822ea0faa0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3051 RBX: ffff8880268965c0 RCX: 0000000000005881 RDX: dffffc0000000000 RSI: 00000000e37fee86 RDI: 0000000000000286 RBP: ffff8880a3315278 R08: ffffffff8cd43948 R09: 0000000000000001 R10: ffff888026896e70 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 down_read+0x36/0x80 kernel/locking/rwsem.c:24 anon_vma_lock_read include/linux/rmap.h:131 [inline] validate_mm+0xd3/0x610 mm/mmap.c:368 __vma_adjust+0xa23/0x17f0 mm/mmap.c:969 vma_adjust include/linux/mm.h:2256 [inline] __split_vma+0x471/0x560 mm/mmap.c:2650 split_vma+0x95/0xd0 mm/mmap.c:2682 mprotect_fixup+0x75e/0x9b0 mm/mprotect.c:445 do_mprotect_pkey+0x562/0x9b0 mm/mprotect.c:589 __do_sys_mprotect mm/mprotect.c:614 [inline] __se_sys_mprotect mm/mprotect.c:611 [inline] __x64_sys_mprotect+0x74/0xb0 mm/mprotect.c:611 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f9ff438d167 Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0a 00 00 00 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:00007ffd18ca9a78 EFLAGS: 00000206 ORIG_RAX: 000000000000000a RAX: ffffffffffffffda RBX: 0000000000021000 RCX: 00007f9ff438d167 RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f9ff2c80000 RBP: 00007ffd18ca9b50 R08: 00000000ffffffff R09: 00007f9ff2c9f700 R10: 0000000000020022 R11: 0000000000000206 R12: 00007ffd18ca9c70 R13: 00007f9ff2c9f700 R14: 0000000000000000 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5637 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:bpf_trace_run7+0x208/0x2c0 kernel/trace/bpf_trace.c:1206 Code: 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 a0 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 ba 00 00 00 48 81 c4 a8 00 00 00 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 e8 18 5d f8 ff e8 d3 63 e7 ff 31 RSP: 0018:ffff8880ba1073d8 EFLAGS: 00000086 RAX: 0000000000000000 RBX: ffffed1017420e67 RCX: ffffffff816a27ca RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888015a48944 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: ffffffff8c66505b R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff89f95488 FS: 00007fce85aec700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa49f458028 CR3: 000000023017d000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __bpf_trace_lock_acquire+0x1bc/0x200 include/trace/events/lock.h:13 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x298/0x3c0 kernel/locking/lockdep.c:3907 seqcount_lockdep_reader_access include/linux/seqlock.h:81 [inline] read_seqcount_begin include/linux/seqlock.h:164 [inline] ktime_get_update_offsets_now+0xcd/0x460 kernel/time/timekeeping.c:2225 hrtimer_update_base kernel/time/hrtimer.c:621 [inline] hrtimer_interrupt+0x138/0x9e0 kernel/time/hrtimer.c:1567 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:unwind_next_frame+0x7af/0x1400 arch/x86/kernel/unwind_orc.c:437 Code: 14 17 4c 89 ff 83 e7 07 40 38 fe 40 0f 9e c7 40 84 f6 40 0f 95 c6 40 84 f7 0f 85 59 09 00 00 83 e0 07 38 c2 40 0f 9e c6 84 d2 <0f> 95 c0 40 84 c6 0f 85 42 09 00 00 49 0f bf 07 48 01 c8 48 89 44 RSP: 0018:ffff8880ba107788 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: 1ffff11017420efa RCX: ffff888226707940 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff8b90985a R09: ffffffff8b9097fc R10: ffff8880ba107917 R11: 0000000000074071 R12: ffff8880ba107900 R13: ffff8880ba1078ed R14: ffff8880ba1078b8 R15: ffffffff8b909856 __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_node+0x146/0x3b0 mm/slab.c:3649 __alloc_skb+0x71/0x560 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] mrp_pdu_init net/802/mrp.c:316 [inline] mrp_pdu_append_vecattr_event+0x7d2/0x1050 net/802/mrp.c:415 mrp_attr_event+0x15d/0x220 net/802/mrp.c:510 mrp_mad_event net/802/mrp.c:590 [inline] mrp_join_timer+0x5a/0xc0 net/802/mrp.c:607 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:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:348 [inline] RIP: 0010:rcu_is_watching+0x3a/0xc0 kernel/rcu/tree.c:1025 Code: 25 02 48 c7 c3 c0 2a 02 00 48 ba 00 00 00 00 00 fc ff df 89 c0 48 8d 3c c5 00 af cf 89 48 89 f9 48 c1 e9 03 80 3c 11 00 75 6d <48> 03 1c c5 00 af cf 89 be 04 00 00 00 48 8d 6b 10 48 89 ef e8 5d RSP: 0018:ffff8882267078d8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: 0000000000022ac0 RCX: 1ffffffff139f5e1 RDX: dffffc0000000000 RSI: ffffffff83771e31 RDI: ffffffff89cfaf08 RBP: 00007fce87177059 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000074071 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88813be45080 R15: 00000000000001c8 rcu_read_unlock include/linux/rcupdate.h:677 [inline] is_bpf_text_address+0x10e/0x1b0 kernel/bpf/core.c:548 kernel_text_address kernel/extable.c:152 [inline] kernel_text_address+0xbd/0xf0 kernel/extable.c:122 __kernel_text_address+0x9/0x30 kernel/extable.c:107 unwind_get_return_address arch/x86/kernel/unwind_orc.c:297 [inline] unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:292 __save_stack_trace+0xaf/0x190 arch/x86/kernel/stacktrace.c:45 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 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] kmem_cache_alloc+0x110/0x370 mm/slab.c:3557 kmem_cache_zalloc include/linux/slab.h:699 [inline] __alloc_file+0x21/0x340 fs/file_table.c:100 alloc_empty_file+0x6d/0x170 fs/file_table.c:150 alloc_file+0x5e/0x4d0 fs/file_table.c:192 alloc_file_pseudo+0x165/0x250 fs/file_table.c:231 anon_inode_getfile fs/anon_inodes.c:87 [inline] anon_inode_getfile+0xc8/0x1f0 fs/anon_inodes.c:70 anon_inode_getfd+0x4c/0xa0 fs/anon_inodes.c:132 do_signalfd4+0x2e1/0x3d0 fs/signalfd.c:287 __do_sys_signalfd fs/signalfd.c:332 [inline] __se_sys_signalfd fs/signalfd.c:323 [inline] __x64_sys_signalfd+0x112/0x190 fs/signalfd.c:323 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fce87177059 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:00007fce85aec168 EFLAGS: 00000246 ORIG_RAX: 000000000000011a RAX: ffffffffffffffda RBX: 00007fce87289f60 RCX: 00007fce87177059 RDX: 0000000000000008 RSI: 0000000020000280 RDI: ffffffffffffffff RBP: 00007fce871d108d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffdb0ec68f R14: 00007fce85aec300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 72 4d jb 0x4f 2: 4c 89 e0 mov %r12,%rax 5: 48 29 e8 sub %rbp,%rax 8: 48 89 c2 mov %rax,%rdx b: 48 c1 e8 3f shr $0x3f,%rax f: 48 c1 fa 02 sar $0x2,%rdx 13: 48 01 d0 add %rdx,%rax 16: 48 d1 f8 sar %rax 19: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 04 jl 0x3b 37: 84 d2 test %dl,%dl 39: 75 48 jne 0x83 3b: 48 63 03 movslq (%rbx),%rax 3e: 48 rex.W 3f: 01 .byte 0x1