watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.1:15269] Modules linked in: irq event stamp: 2516741 hardirqs last enabled at (2516740): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (2516741): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2431586): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (2431589): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2431589): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 15269 Comm: syz-executor.1 Not tainted 4.19.201-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:unwind_next_frame+0xa04/0x1400 arch/x86/kernel/unwind_orc.c:508 Code: a4 d9 c8 06 48 8b 44 24 68 4c 89 e2 4c 89 f7 4c 89 44 24 30 48 8d 70 f8 48 89 44 24 28 e8 34 f4 ff ff 84 c0 0f 84 72 fa ff ff <48> b8 00 00 00 00 00 fc ff df 48 8b 14 24 4c 8b 64 24 68 4c 8b 44 RSP: 0018:ffff8880ba007398 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: 1ffff11017400e7c RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffff8880ba007328 RDI: ffff8880ba007c00 RBP: 0000000000000002 R08: ffffffff8bfedd44 R09: ffffffff8bfedd40 R10: ffff8880ba007527 R11: 0000000000074071 R12: ffff8880ba007510 R13: ffff8880ba0074fd R14: ffff8880ba0074c8 R15: ffffffff8bfedd40 FS: 00007f97b271d700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000172e848 CR3: 00000000b2aea000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 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 kmem_cache_alloc+0x122/0x370 mm/slab.c:3559 kmem_cache_zalloc include/linux/slab.h:699 [inline] sctp_chunkify+0x4b/0x2e0 net/sctp/sm_make_chunk.c:1349 sctp_rcv+0x1369/0x3340 net/sctp/input.c:222 sctp6_rcv+0x12/0x30 net/sctp/ipv6.c:1072 ip6_input_finish+0x46a/0x17a0 net/ipv6/ip6_input.c:385 NF_HOOK include/linux/netfilter.h:289 [inline] ip6_input+0xcf/0x3c0 net/ipv6/ip6_input.c:428 dst_input include/net/dst.h:461 [inline] ip6_rcv_finish+0x1d9/0x2f0 net/ipv6/ip6_input.c:76 NF_HOOK include/linux/netfilter.h:289 [inline] ipv6_rcv+0xf2/0x3f0 net/ipv6/ip6_input.c:273 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:4954 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066 process_backlog+0x241/0x700 net/core/dev.c:5849 napi_poll net/core/dev.c:6280 [inline] net_rx_action+0x4ac/0xfb0 net/core/dev.c:6346 __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:lock_acquire+0x46/0x3c0 kernel/locking/lockdep.c:3900 Code: 89 f4 55 48 89 fd 53 65 48 8b 1c 25 80 df 01 00 48 8d bb 84 08 00 00 48 83 ec 18 48 89 fa 4c 89 0c 24 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 bd 02 00 00 8b RSP: 0018:ffff88804db87668 EFLAGS: 00000a07 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff888051878200 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888051878a84 RBP: ffffffff89f85f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock include/linux/rcupdate.h:627 [inline] lock_page_memcg+0x36/0x220 mm/memcontrol.c:1908 page_remove_file_rmap+0x36/0xa30 mm/rmap.c:1212 page_remove_rmap+0xe5/0x120 mm/rmap.c:1297 zap_pte_range mm/memory.c:1350 [inline] zap_pmd_range mm/memory.c:1463 [inline] zap_pud_range mm/memory.c:1492 [inline] zap_p4d_range mm/memory.c:1513 [inline] unmap_page_range+0x147d/0x2c50 mm/memory.c:1534 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: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: 0033:0x4665e9 Code: f0 89 fe 44 31 c7 41 c1 e8 07 41 31 f8 89 f7 c1 ee 10 44 31 c6 8d 04 37 49 89 d0 48 99 48 f7 f9 89 bb 20 01 00 00 89 b3 24 01 <00> 00 48 85 d2 74 0a 48 8b 6c 24 18 48 83 c4 20 c3 4c 89 04 24 48 RSP: 002b:00007f97b271d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: fffffffffffffe00 RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 000000000000006b RSI: 0000000000000084 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 000000000000001c R09: 0000000000000000 R10: 000000002055bfe4 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffef8cee2af R14: 00007f97b271d300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 15262 Comm: syz-executor.5 Not tainted 4.19.201-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:apic_timer_interrupt+0x0/0x20 arch/x86/entry/entry_64.S:894 Code: 31 ff fc e8 b8 28 e0 f8 48 89 e7 e8 0a 68 e0 f8 e8 8f 28 e0 f8 e9 85 f5 ff ff c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <68> 13 ff ff ff e8 46 f4 ff ff e8 01 2a 00 00 e9 2b f5 ff ff 66 66 RSP: 0018:ffff8880ba106e18 EFLAGS: 00000002 RAX: 0000000000000103 RBX: 1ffff11017420dd1 RCX: 0000000000000000 RDX: 0000000000000102 RSI: ffff8880ba106dd0 RDI: 0000000000000001 RBP: ffff8880ba107308 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba106fcf R11: 0000000000074071 R12: ffff8880ba100000 R13: ffff8880ba106fa5 R14: ffff8880ba106f70 R15: ffffffff8c061366 FS: 00007f39b2832700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f8b8e21160 CR3: 0000000009e6d000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: RIP: 0010:unwind_next_frame+0xef7/0x1400 arch/x86/kernel/unwind_orc.c:580 Code: 93 c1 49 39 d4 0f 92 c0 84 c1 74 0b 48 3b 6c 24 18 0f 86 5f 01 00 00 bf 01 00 00 00 e8 52 db 17 00 65 8b 15 2b 4f d8 7e 85 d2 01 00 00 00 0f 85 90 f1 ff ff e8 23 ad d6 ff e9 86 f1 ff ff 49 RSP: 0018:ffff8880ba106e40 EFLAGS: 00000202 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 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 kmem_cache_alloc_node+0x146/0x3b0 mm/slab.c:3649 __alloc_skb+0x71/0x560 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] sctp_ulpevent_new.constprop.0+0x1f/0x170 net/sctp/ulpevent.c:69 sctp_ulpevent_make_peer_addr_change+0x31/0x7f0 net/sctp/ulpevent.c:265 sctp_assoc_control_transport+0x20e/0xb70 net/sctp/associola.c:869 sctp_cmd_transport_on net/sctp/sm_sideeffect.c:768 [inline] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1668 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline] sctp_do_sm+0x3c5c/0x5110 net/sctp/sm_sideeffect.c:1170 sctp_assoc_bh_rcv+0x345/0x650 net/sctp/associola.c:1073 sctp_inq_push+0x1da/0x270 net/sctp/inqueue.c:95 sctp_rcv+0x1651/0x3340 net/sctp/input.c:268 sctp6_rcv+0x12/0x30 net/sctp/ipv6.c:1072 ip6_input_finish+0x46a/0x17a0 net/ipv6/ip6_input.c:385 NF_HOOK include/linux/netfilter.h:289 [inline] ip6_input+0xcf/0x3c0 net/ipv6/ip6_input.c:428 dst_input include/net/dst.h:461 [inline] ip6_rcv_finish+0x1d9/0x2f0 net/ipv6/ip6_input.c:76 NF_HOOK include/linux/netfilter.h:289 [inline] ipv6_rcv+0xf2/0x3f0 net/ipv6/ip6_input.c:273 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:4954 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066 process_backlog+0x241/0x700 net/core/dev.c:5849 napi_poll net/core/dev.c:6280 [inline] net_rx_action+0x4ac/0xfb0 net/core/dev.c:6346 __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:native_local_ptep_get_and_clear arch/x86/include/asm/pgtable.h:1041 [inline] RIP: 0010:ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1123 [inline] RIP: 0010:zap_pte_range mm/memory.c:1334 [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+0x11ad/0x2c50 mm/memory.c:1534 Code: 24 b8 00 00 00 83 e3 01 89 de e8 2e f7 d6 ff 84 db 0f 84 fc 07 00 00 e8 f1 f5 d6 ff 48 8b 44 24 30 48 c1 e8 03 42 80 3c 30 00 <0f> 85 41 1a 00 00 48 8b 44 24 30 48 8b 08 48 c7 00 00 00 00 00 48 RSP: 0018:ffff88804387f770 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff11012fabc6c RBX: 0000000000000001 RCX: ffffffff818b8c92 RDX: 0000000000000000 RSI: ffffffff818b8c9f RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 8000000057672007 R13: ffffea00015d9c80 R14: dffffc0000000000 R15: 00007f39b4c6d000 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: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: 0033:0x4665e9 Code: Bad RIP value. RSP: 002b:00007f39b2832188 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: fffffffffffffe00 RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 000000000000006b RSI: 0000000000000084 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 000000000000001c R09: 0000000000000000 R10: 000000002055bfe4 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff3172da8f R14: 00007f39b2832300 R15: 0000000000022000