watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:10634] Modules linked in: irq event stamp: 2694703 hardirqs last enabled at (2694702): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (2694703): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2681292): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (2681295): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2681295): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 10634 Comm: syz-executor.0 Not tainted 4.19.187-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ieee80211_rx_h_mgmt+0x6d/0x560 net/mac80211/rx.c:3401 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b8 04 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 7b 08 49 8d bf d8 00 00 00 <48> 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 88 04 00 00 4d 8b af d8 00 RSP: 0018:ffff8880ba007918 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff8880ba007d98 RCX: ffffffff879ebd64 RDX: 1ffff11017400fb4 RSI: ffffffff879e1876 RDI: ffff88808f08d3d8 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 00000000ffffffe2 R13: dffffc0000000000 R14: ffff88808fe5a5c0 R15: ffff88808f08d300 FS: 00007f41532d4700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556e01a08a38 CR3: 0000000009e6d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_rx_handlers+0x3a69/0xa630 net/mac80211/rx.c:3615 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:__tlb_adjust_range include/asm-generic/tlb.h:129 [inline] RIP: 0010:zap_pte_range mm/memory.c:1336 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1452 [inline] RIP: 0010:zap_pud_range mm/memory.c:1481 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1502 [inline] RIP: 0010:unmap_page_range+0x1090/0x2a70 mm/memory.c:1523 Code: 24 18 48 8b 44 24 70 48 39 41 10 48 8d 79 18 48 0f 46 41 10 48 89 41 10 48 89 f8 48 c1 e8 03 42 80 3c 30 00 0f 85 fb 15 00 00 <48> 8b 4c 24 18 4c 89 f8 4c 39 79 18 48 0f 43 41 18 4d 85 ed 48 89 RSP: 0018:ffff8880a9257778 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff1101524af3a RBX: 0000000000000001 RCX: ffff8880a92579b8 RDX: 0000000000000000 RSI: ffffffff818b6378 RDI: ffff8880a92579d0 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 800000007f90e007 R13: ffffea0001fe4380 R14: dffffc0000000000 R15: 00007f41543dd000 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+0x277/0x2d0 arch/x86/entry/common.c:198 retint_user+0x8/0x18 RIP: 0033:0x7ffc1bdce950 Code: Bad RIP value. RSP: 002b:00007f41532d4148 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000083c5b2ce RBX: 0000000000000004 RCX: 0000000000006cf7 RDX: 0000000000000037 RSI: 0000000000000006 RDI: 00007f41532d415c RBP: 00007f41532d4170 R08: 00007ffc1bdcc000 R09: 0000000000000000 R10: 001db180e7d30f80 R11: 0000000000000001 R12: 00007ffc1bdcb080 R13: 000000000000460a R14: 00007f41532d4300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 10650 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:__raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline] RIP: 0010:_raw_spin_unlock+0x1/0x40 kernel/locking/spinlock.c:176 Code: 00 31 c9 45 31 c9 41 b8 01 00 00 00 ba 01 00 00 00 31 f6 e8 e1 4f 33 f9 58 44 89 e0 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 55 <48> 8b 54 24 08 48 89 fd be 01 00 00 00 48 83 c7 18 e8 09 47 33 f9 RSP: 0018:ffff8880629e7940 EFLAGS: 00000202 RAX: ffff8880a2dfc500 RBX: 0000000000000001 RCX: ffffffff81a85618 RDX: 0000000000000000 RSI: ffffffff81a85626 RDI: ffff88823b402380 RBP: ffff88823b402300 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000005 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88823b402380 R14: ffffffff81a85151 R15: ffff8880629e7d38 FS: 00007f073a0d48c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0738f53f60 CR3: 00000000abddc000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: spin_unlock include/linux/spinlock.h:369 [inline] fast_dput fs/dcache.c:732 [inline] dput+0x517/0x640 fs/dcache.c:833 path_put fs/namei.c:484 [inline] put_link fs/namei.c:885 [inline] step_into fs/namei.c:1773 [inline] walk_component+0x2e4/0xda0 fs/namei.c:1830 link_path_walk.part.0+0x541/0x1230 fs/namei.c:2139 link_path_walk fs/namei.c:2073 [inline] path_openat+0x1db/0x2df0 fs/namei.c:3536 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f073921a840 Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 RSP: 002b:00007ffe848c2dc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000556e0108b3e8 RCX: 00007f073921a840 RDX: 0000000000000000 RSI: 0000000000080101 RDI: 0000556e0108b3e8 RBP: 0000556e019f8028 R08: 0000000000000020 R09: 0000000000000018 R10: 00007f0738f542aa R11: 0000000000000246 R12: 0000556e0108b3e6 R13: 0000000000000000 R14: 0000000000000003 R15: 000000000000000e