netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium Bluetooth: hci3: command 0x0406 tx timeout watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.1:12818] Modules linked in: irq event stamp: 3427249 hardirqs last enabled at (3427248): [] __local_bh_enable_ip+0x159/0x270 kernel/softirq.c:194 hardirqs last disabled at (3427249): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (3414224): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (3414227): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (3414227): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 12818 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:99 [inline] RIP: 0010:__local_bh_enable_ip+0x18d/0x270 kernel/softirq.c:196 Code: 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 dd 00 00 00 48 83 3d c8 5f b8 08 00 0f 84 8d 00 00 00 fb 66 0f 1f 44 00 00 <65> 8b 05 6c bc c8 7e 85 c0 74 7d 5b 5d 41 5c c3 80 3d f3 87 d5 09 RSP: 0018:ffff8880ba007928 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3053 RBX: 0000000000000201 RCX: 1ffff110162899bd RDX: dffffc0000000000 RSI: ffff8880b144cdf0 RDI: ffff8880b144cdc4 RBP: ffffffff879fe656 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b144c540 R13: ffff8880ba007dd8 R14: 0000000000000001 R15: ffff8880ba007dd8 FS: 00007f43f3b01700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4715b7d028 CR3: 0000000009e6d000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: spin_unlock_bh include/linux/spinlock.h:374 [inline] ieee80211_rx_handlers+0x636/0x9730 net/mac80211/rx.c:3704 ieee80211_invoke_rx_handlers net/mac80211/rx.c:3726 [inline] ieee80211_prepare_and_rx_handle+0x23fa/0x6790 net/mac80211/rx.c:4423 __ieee80211_rx_handle_packet net/mac80211/rx.c:4483 [inline] ieee80211_rx_napi+0x108d/0x2470 net/mac80211/rx.c:4672 ieee80211_rx include/net/mac80211.h:4109 [inline] ieee80211_tasklet_handler+0x101/0x160 net/mac80211/main.c:229 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522 __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:compound_head include/linux/page-flags.h:144 [inline] RIP: 0010:PageSwapBacked include/linux/page-flags.h:295 [inline] RIP: 0010:mm_counter_file include/linux/mm.h:1642 [inline] RIP: 0010:mm_counter include/linux/mm.h:1651 [inline] RIP: 0010:zap_pte_range mm/memory.c:1349 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1463 [inline] RIP: 0010:zap_pud_range mm/memory.c:1492 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1513 [inline] RIP: 0010:unmap_page_range+0x13e2/0x2c50 mm/memory.c:1534 Code: ff ff ff ff 48 89 de e8 3c e7 d6 ff 48 83 fb ff 0f 84 02 0f 00 00 e8 9d e5 d6 ff 4d 8b 65 08 31 ff 4c 89 eb 4c 89 e2 83 e2 01 <48> 89 d6 48 89 94 24 c0 00 00 00 e8 0e e7 d6 ff 48 8b 94 24 c0 00 RSP: 0018:ffff888060b57770 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8880b144c540 RBX: ffffea0002a448c0 RCX: ffffffff818b9fc4 RDX: 0000000000000000 RSI: ffffffff818b9fd3 RDI: 0000000000000000 RBP: ffffea0002a448c8 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000007 R11: 0000000000000000 R12: dead000000000100 R13: ffffea0002a448c0 R14: dffffc0000000000 R15: 00007f43f50e7000 unmap_single_vma+0x198/0x300 mm/memory.c:1579 unmap_vmas+0xa9/0x180 mm/memory.c:1609 exit_mmap+0x2b9/0x530 mm/mmap.c:3093 __mmput kernel/fork.c:1016 [inline] mmput+0x14e/0x4a0 kernel/fork.c:1037 exit_mm kernel/exit.c:549 [inline] do_exit+0xaec/0x2be0 kernel/exit.c:857 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f43f518c0f9 Code: Bad RIP value. RSP: 002b:00007f43f3b01168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: 0000000000003287 RBX: 00007f43f529ef60 RCX: 00007f43f518c0f9 RDX: 0000000000003287 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f43f51e608d R08: 0000000000000000 R09: 00000000000002ff R10: 0000000004000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe3c88ec2f R14: 00007f43f3b01300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 25143 Comm: kworker/u4:8 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:check_preemption_disabled+0xc/0x280 lib/smp_processor_id.c:12 Code: 2a 88 c0 fd 48 8b 3c 24 e8 81 44 21 fe e9 87 f7 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 41 55 49 89 f5 41 54 55 <48> 89 fd 53 e8 6b 67 eb fd 65 44 8b 25 23 63 8a 7c 65 8b 1d 3c c1 RSP: 0018:ffff8880b4bf7c60 EFLAGS: 00000293 RAX: ffff8880a8508380 RBX: 0000000000000000 RCX: ffffffff87d8f06d RDX: 0000000000000000 RSI: ffffffff88b3e0e0 RDI: ffffffff88b3e120 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff88b3e0e0 R14: 00000000000000d6 R15: ffff8880a44b5400 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c004eea4d0 CR3: 00000000ab136000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:348 [inline] rcu_is_watching+0x12/0xc0 kernel/rcu/tree.c:1025 rcu_read_unlock include/linux/rcupdate.h:677 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:423 [inline] batadv_nc_worker+0x936/0xd50 net/batman-adv/network-coding.c:730 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), 6 bytes skipped: 0: df 48 c1 fisttps -0x3f(%rax) 3: e8 03 80 3c 10 callq 0x103c800b 8: 00 0f add %cl,(%rdi) a: 85 dd test %ebx,%ebp c: 00 00 add %al,(%rax) e: 00 48 83 add %cl,-0x7d(%rax) 11: 3d c8 5f b8 08 cmp $0x8b85fc8,%eax 16: 00 0f add %cl,(%rdi) 18: 84 8d 00 00 00 fb test %cl,-0x5000000(%rbp) 1e: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) * 24: 65 8b 05 6c bc c8 7e mov %gs:0x7ec8bc6c(%rip),%eax # 0x7ec8bc97 <-- trapping instruction 2b: 85 c0 test %eax,%eax 2d: 74 7d je 0xac 2f: 5b pop %rbx 30: 5d pop %rbp 31: 41 5c pop %r12 33: c3 retq 34: 80 .byte 0x80 35: 3d f3 87 d5 09 cmp $0x9d587f3,%eax