watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.3:5254] Modules linked in: irq event stamp: 4481987 hardirqs last enabled at (4481986): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4481987): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4479040): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4479043): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 5254 Comm: syz-executor.3 Not tainted 5.10.230 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:193 Code: ff ff b9 ff ff ff ff b8 08 00 00 00 4d 8b 17 49 8b 16 48 0f bd c8 48 63 c9 e9 5e ff ff ff 4c 01 d2 49 89 17 e9 cd fd ff ff 90 <48> 8b 34 24 65 48 8b 14 25 80 6f 02 00 65 8b 05 ac b0 c1 7e a9 00 RSP: 0018:ffff88806cf098d0 EFLAGS: 00000296 RAX: 0000000000000000 RBX: ffffffffffffffff RCX: ffffffff83bed02f RDX: ffff888047183480 RSI: 00000000ffffffff RDI: ffff88806cf09d98 RBP: ffff88806cf09d98 R08: 000000000000004c R09: ffff8880449d0d5f R10: 0000000000000080 R11: 0000000000000001 R12: 0000000000000001 R13: dffffc0000000000 R14: ffff88806cf09d98 R15: ffff8880507263c0 FS: 00007f25d99de700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd84987e7e0 CR3: 0000000053a04000 CR4: 0000000000350ee0 Call Trace: ieee80211_rx_get_bigtk+0x19/0x4b0 net/mac80211/rx.c:1864 ieee80211_rx_h_decrypt net/mac80211/rx.c:2020 [inline] ieee80211_rx_handlers+0x3631/0xa3f0 net/mac80211/rx.c:3866 ieee80211_invoke_rx_handlers net/mac80211/rx.c:3918 [inline] ieee80211_prepare_and_rx_handle+0x17d4/0x5890 net/mac80211/rx.c:4605 __ieee80211_rx_handle_packet net/mac80211/rx.c:4666 [inline] ieee80211_rx_list+0xdd0/0x2370 net/mac80211/rx.c:4846 ieee80211_rx_napi+0xdc/0x3c0 net/mac80211/rx.c:4867 ieee80211_rx include/net/mac80211.h:4502 [inline] ieee80211_tasklet_handler+0xd3/0x130 net/mac80211/main.c:235 tasklet_action_common.constprop.0+0x244/0x2f0 kernel/softirq.c:560 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:fs_reclaim_release+0xa/0xd0 mm/page_alloc.c:4318 Code: c7 c7 10 d2 c8 84 48 89 04 24 e8 91 ba 06 00 48 8b 04 24 eb b9 66 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df <55> 65 48 8b 2c 25 80 6f 02 00 53 89 fb 48 8d 7d 24 48 89 fa 48 c1 RSP: 0018:ffff888048eaf798 EFLAGS: 00000282 RAX: dffffc0000000000 RBX: 1ffff110091d5ef8 RCX: 00000000000029cd RDX: 1ffff11008e307b8 RSI: 0000000000000008 RDI: 0000000000100dca RBP: 0000000000100dca R08: 0000000000000000 R09: ffffffff8686a6f7 R10: 0000000000000246 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000100dca R15: 0000000000000001 prepare_alloc_pages mm/page_alloc.c:4937 [inline] __alloc_pages_nodemask+0x16c/0x600 mm/page_alloc.c:4983 alloc_pages_vma+0xbb/0x410 mm/mempolicy.c:2229 alloc_zeroed_user_highpage_movable include/linux/highmem.h:277 [inline] wp_page_copy+0xee7/0x1f00 mm/memory.c:2906 do_wp_page+0x27b/0x1390 mm/memory.c:3217 handle_pte_fault mm/memory.c:4515 [inline] __handle_mm_fault mm/memory.c:4632 [inline] handle_mm_fault+0x1cc7/0x3500 mm/memory.c:4730 do_user_addr_fault+0x56e/0xc60 arch/x86/mm/fault.c:1345 handle_page_fault arch/x86/mm/fault.c:1402 [inline] exc_page_fault+0xa2/0x1a0 arch/x86/mm/fault.c:1458 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571 RIP: 0010:__put_user_nocheck_4+0x3/0x11 Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca e9 01 06 1d 02 90 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca e9 e2 05 1d 02 66 90 48 bb f9 ef ff ff ff 7f RSP: 0018:ffff888048eafcf0 EFLAGS: 00050293 RAX: 0000000000000000 RBX: 00007fffffffeffd RCX: 0000000020004d38 RDX: 0000000000040000 RSI: ffffffff831114c2 RDI: ffff888047183db8 RBP: 0000000004040850 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000020004d00 R14: 000000000000012c R15: 000000000000012b __sys_sendmmsg+0x1cf/0x470 net/socket.c:2523 __do_sys_sendmmsg net/socket.c:2547 [inline] __se_sys_sendmmsg net/socket.c:2544 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f25dc468b19 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:00007f25d99de188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f25dc57bf60 RCX: 00007f25dc468b19 RDX: 040000000000012c RSI: 0000000020004d00 RDI: 0000000000000004 RBP: 00007f25dc4c2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000004000850 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc2f2b0bef R14: 00007f25d99de300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 0 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:706 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: b9 ff ff ff ff mov $0xffffffff,%ecx 5: b8 08 00 00 00 mov $0x8,%eax a: 4d 8b 17 mov (%r15),%r10 d: 49 8b 16 mov (%r14),%rdx 10: 48 0f bd c8 bsr %rax,%rcx 14: 48 63 c9 movslq %ecx,%rcx 17: e9 5e ff ff ff jmpq 0xffffff7a 1c: 4c 01 d2 add %r10,%rdx 1f: 49 89 17 mov %rdx,(%r15) 22: e9 cd fd ff ff jmpq 0xfffffdf4 27: 90 nop * 28: 48 8b 34 24 mov (%rsp),%rsi <-- trapping instruction 2c: 65 48 8b 14 25 80 6f mov %gs:0x26f80,%rdx 33: 02 00 35: 65 8b 05 ac b0 c1 7e mov %gs:0x7ec1b0ac(%rip),%eax # 0x7ec1b0e8 3c: a9 .byte 0xa9