watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.4:27603] Modules linked in: irq event stamp: 2369833 hardirqs last enabled at (2369832): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (2369833): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2356110): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (2356113): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2356113): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 27603 Comm: syz-executor.4 Not tainted 4.19.187-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:cfg80211_rx_mgmt+0x7e/0xc60 net/wireless/mlme.c:702 Code: 18 d9 f9 49 8d 7e 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ee 0a 00 00 48 8d 7b 08 4d 8b 66 18 <48> b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 RSP: 0018:ffff8880ba0078e0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff8880702e0e50 RCX: ffff8880b2549350 RDX: 1ffff1101240969f RSI: ffffffff878944c7 RDI: ffff8880702e0e58 RBP: ffff8880b2549350 R08: 000000000000004c R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffffffff8966ec80 R13: dffffc0000000000 R14: ffff88809204b4e0 R15: ffff8880ba007d98 FS: 00007f5451c3d700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000009e6d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_rx_h_userspace_mgmt net/mac80211/rx.c:3323 [inline] ieee80211_rx_handlers+0x3a29/0xa630 net/mac80211/rx.c:3613 ieee80211_invoke_rx_handlers net/mac80211/rx.c:3645 [inline] ieee80211_prepare_and_rx_handle+0x23ed/0x6780 net/mac80211/rx.c:4342 __ieee80211_rx_handle_packet net/mac80211/rx.c:4402 [inline] ieee80211_rx_napi+0x108d/0x2470 net/mac80211/rx.c:4591 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:535 [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_read_lock+0x26/0x40 kernel/rcu/tree_plugin.h:405 Code: 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df 53 65 48 8b 1c 25 80 df 01 00 48 8d bb 70 03 00 00 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> c0 74 04 3c 03 7e 09 83 83 70 03 00 00 01 5b c3 e8 c4 33 47 00 RSP: 0018:ffff88803a3976b0 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff8880b51fa180 RCX: ffffffff818f6ca1 RDX: 1ffff11016a3f49e RSI: ffffffff818f6cae RDI: ffff8880b51fa4f0 RBP: ffffea00019adac0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffea00019adac0 R15: 00007f54546aa000 rcu_read_lock include/linux/rcupdate.h:625 [inline] lock_page_memcg+0x16/0x220 mm/memcontrol.c:1908 page_remove_file_rmap+0x36/0xa30 mm/rmap.c:1215 page_remove_rmap+0xe5/0x120 mm/rmap.c:1300 zap_pte_range mm/memory.c:1350 [inline] zap_pmd_range mm/memory.c:1452 [inline] zap_pud_range mm/memory.c:1481 [inline] zap_p4d_range mm/memory.c:1502 [inline] unmap_page_range+0x12f6/0x2a70 mm/memory.c:1523 unmap_single_vma+0x198/0x300 mm/memory.c:1568 unmap_vmas+0xa9/0x180 mm/memory.c:1598 exit_mmap+0x2b9/0x530 mm/mmap.c:3093 __mmput kernel/fork.c:1015 [inline] mmput+0x14e/0x4a0 kernel/fork.c:1036 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: 0033:0x466459 Code: Bad RIP value. RSP: 002b:00007f5451c3d218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000056c208 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056c208 RBP: 000000000056c200 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c20c R13: 00007ffd4e89d31f R14: 00007f5451c3d300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4695 Comm: systemd-udevd Not tainted 4.19.187-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:iterate_dir+0x174/0x5c0 fs/readdir.c:49 Code: 89 c2 48 89 44 24 10 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 ce 03 00 00 48 8b 04 24 4c 8b a3 00 01 00 00 <48> 8d 68 08 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 RSP: 0018:ffff88809c107e00 EFLAGS: 00000246 RAX: ffff88809c107e80 RBX: ffff8880b2d6c500 RCX: ffffffff81a74715 RDX: 1ffff110165ad8c0 RSI: ffffffff81a74722 RDI: 0000000000000005 RBP: 0000000000000000 R08: ffffffff8cd28910 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880b2d6c528 R14: 0000000000000001 R15: ffff88808b3d1bf8 FS: 00007fe476e628c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f583111000 CR3: 000000009c184000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_getdents fs/readdir.c:268 [inline] __se_sys_getdents+0x175/0x2d0 fs/readdir.c:249 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fe475cacf2b Code: fc ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 57 41 56 48 63 ff 41 55 41 54 b8 4e 00 00 00 55 53 48 89 f3 48 83 ec 08 0f 05 <48> 3d 00 f0 ff ff 77 55 48 8d 2c 06 49 89 c4 48 39 ee 73 34 90 44 RSP: 002b:00007ffc82754570 EFLAGS: 00000202 ORIG_RAX: 000000000000004e RAX: ffffffffffffffda RBX: 000055f583111010 RCX: 00007fe475cacf2b RDX: 0000000000008000 RSI: 000055f583111010 RDI: 0000000000000010 RBP: 000055f583111010 R08: 00007fe475f932f8 R09: 0000000000008040 R10: 00007fe475f92b58 R11: 0000000000000202 R12: fffffffffffffe50 R13: 0000000000000000 R14: 00000000000000fe R15: 000055f5830dce00