netlink: 'syz-executor.5': attribute type 7 has an invalid length. netlink: 'syz-executor.5': attribute type 39 has an invalid length. watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.4:2841] Modules linked in: irq event stamp: 3700069 hardirqs last enabled at (3700068): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3700069): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (0): [] copy_process.part.0+0x15b9/0x8260 kernel/fork.c:1856 softirqs last disabled at (399): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (399): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 2841 Comm: syz-executor.4 Not tainted 4.19.210-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline] RIP: 0010:_raw_spin_unlock_irq+0x50/0x80 kernel/locking/spinlock.c:192 Code: c0 98 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 31 48 83 3d 71 31 d8 01 00 74 25 fb 66 0f 1f 44 00 00 01 00 00 00 e8 96 1b 28 f9 65 8b 05 0f 8e e8 77 85 c0 74 02 5d RSP: 0018:ffff8880ba107de0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3053 RBX: dffffc0000000000 RCX: 1ffff11012dd81ad RDX: dffffc0000000000 RSI: ffff888096ec0d48 RDI: ffff888096ec0d44 RBP: ffff8880ba122b40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8688f6d0 R13: ffff8880ba122b40 R14: ffff8880ba107e78 R15: 0000000000000000 FS: 00007f76c1547700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f76c3f77931 CR3: 000000021ee6d000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: expire_timers+0x238/0x4e0 kernel/time/timer.c:1374 __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:anon_vma_lock_read include/linux/rmap.h:131 [inline] RIP: 0010:validate_mm+0xbd/0x610 mm/mmap.c:368 Code: 48 c1 e8 03 80 3c 28 00 0f 85 b6 04 00 00 4c 8b b3 88 00 00 00 4d 85 f6 74 a9 e8 6e e4 d4 ff 4c 89 f0 48 c1 e8 03 80 3c 28 00 <0f> 85 d1 04 00 00 49 8b 06 4c 8d 63 78 48 8d 78 08 e8 3d 47 8b 06 RSP: 0018:ffff8882263ffb40 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff1101458f55c RBX: ffff88809c7ec000 RCX: ffffc9000e47a000 RDX: 0000000000002ea0 RSI: ffffffff818da102 RDI: ffff88809c7ec088 RBP: dffffc0000000000 R08: ffffffff8cd2ee80 R09: 0000000000000001 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809c7ec7b0 R13: 000000000000001f R14: ffff8880a2c7aae0 R15: ffff88809c7ec7a0 remove_vma_list mm/mmap.c:2553 [inline] do_munmap+0x857/0xde0 mm/mmap.c:2786 mmap_region+0x2a3/0x16b0 mm/mmap.c:1700 do_mmap+0x8e8/0x1080 mm/mmap.c:1530 do_mmap_pgoff include/linux/mm.h:2329 [inline] vm_mmap_pgoff+0x197/0x200 mm/util.c:357 ksys_mmap_pgoff+0x45f/0x5a0 mm/mmap.c:1580 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f76c3fd08d9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f76c1547188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f76c40d4f60 RCX: 00007f76c3fd08d9 RDX: 0000000000000003 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 00007f76c402acb4 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf7cb85bf R14: 00007f76c1547300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 28514 Comm: syz-executor.4 Not tainted 4.19.210-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0x385/0x3ff0 kernel/locking/lockdep.c:3357 Code: 8d 42 20 48 89 c2 48 89 44 24 38 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 84 d2 74 09 80 fa 03 0f 8e af 27 00 00 <41> 0f b7 42 20 49 8d 7a 08 48 89 fa 48 c1 ea 03 66 25 00 e0 09 c8 RSP: 0000:ffff88809cbc7550 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000002e RDX: 0000000000000000 RSI: 1ffff110093ab9cd RDI: ffff888049d5ce68 RBP: 0000000000000002 R08: 000000000000002e R09: 0000000000000001 R10: ffff888049d5ce70 R11: 0000000000074071 R12: 0000000000000001 R13: ffff888049d5c5c0 R14: ffffffff89f85fa0 R15: 0000000000000000 FS: 00007f76c1547700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f76c3f77931 CR3: 0000000044860000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock include/linux/rcupdate.h:627 [inline] is_bpf_text_address+0x36/0x1b0 kernel/bpf/core.c:546 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 __sigqueue_alloc+0x246/0x4c0 kernel/signal.c:429 __send_signal+0xec9/0x15c0 kernel/signal.c:1130 specific_send_sig_info kernel/signal.c:1258 [inline] force_sig_info+0x262/0x3b0 kernel/signal.c:1310 force_sig_info_fault.constprop.0+0x1e6/0x320 arch/x86/mm/fault.c:226 __bad_area_nosemaphore+0x2c1/0x400 arch/x86/mm/fault.c:910 __bad_area arch/x86/mm/fault.c:944 [inline] bad_area_access_error+0x25c/0x4a0 arch/x86/mm/fault.c:983 __do_page_fault+0xb09/0xd60 arch/x86/mm/fault.c:1392 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7f76c3f77272 Code: ff e8 32 33 01 00 85 c0 0f 84 ba 01 00 00 64 f0 83 2c 25 b8 ff ff ff 01 e8 3b d1 00 00 48 8b 0c 24 8b 00 48 8b 99 80 00 00 00 <89> 81 88 00 00 00 85 c0 75 06 48 83 fb ff 74 18 48 63 44 24 14 48 RSP: 002b:00007f76c15471a0 EFLAGS: 00010203 RAX: 0000000000000013 RBX: 00000002be5741c3 RCX: 00007f76c3f778a9 RDX: 00007f76c3f7724e RSI: 0000000000000001 RDI: 00007f76c15475f0 RBP: 00007f76c402acb4 R08: 00007f76c15471a0 R09: 00007f76c402acb4 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf7cb85bf R14: 00007f76c1547300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 5 bytes skipped: 0: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 7: fc ff df a: 48 c1 e8 03 shr $0x3,%rax e: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) 12: 75 31 jne 0x45 14: 48 83 3d 71 31 d8 01 cmpq $0x0,0x1d83171(%rip) # 0x1d8318d 1b: 00 1c: 74 25 je 0x43 1e: fb sti 1f: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) * 25: bf 01 00 00 00 mov $0x1,%edi <-- trapping instruction 2a: e8 96 1b 28 f9 callq 0xf9281bc5 2f: 65 8b 05 0f 8e e8 77 mov %gs:0x77e88e0f(%rip),%eax # 0x77e88e45 36: 85 c0 test %eax,%eax 38: 74 02 je 0x3c 3a: 5d pop %rbp