BUG: soft lockup in sctp_generate_heartbeat

Kernel	Title	Repro	Fix bisect	Count	Last	Reported	Patched	Status
upstream	BUG: soft lockup in sctp_generate_heartbeat_event sctp			1	2380d	2380d	0/28	closed as invalid on 2018/05/19 09:33
linux-4.14	BUG: soft lockup in sctp_generate_heartbeat_event			2	1681d	1725d	0/1	auto-closed as invalid on 2020/08/15 07:16
linux-4.19	BUG: soft lockup in sctp_generate_heartbeat_event	C	error	14	631d	1296d	0/1	upstream: reported C repro on 2021/05/06 15:10
upstream	INFO: rcu detected stall in sctp_generate_heartbeat_event (4) sctp			1	1085d	1085d	0/28	closed as invalid on 2022/02/08 10:10

watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:19343] Modules linked in: irq event stamp: 4402033 hardirqs last enabled at (4402032): [<ffffffff87400976>] restore_regs_and_return_to_kernel+0x0/0x2a hardirqs last disabled at (4402033): [<ffffffff874018ae>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (314626): [<ffffffff8760068b>] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (316073): [<ffffffff81320ae3>] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (316073): [<ffffffff81320ae3>] irq_exit+0x193/0x240 kernel/softirq.c:409 CPU: 1 PID: 19343 Comm: syz-executor.5 Not tainted 4.14.227-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88805da90200 task.stack: ffff888040cd8000 RIP: 0010:deref_stack_reg+0x0/0x1a0 arch/x86/kernel/unwind_orc.c:285 RSP: 0018:ffff8880ba5074c8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: ffff8880ba507d58 RBX: 1ffff110174a0ea1 RCX: ffffffff8ad62fda RDX: ffff8880ba5075d8 RSI: ffff8880ba507d50 RDI: ffff8880ba507590 RBP: 0000000000000002 R08: ffffffff8ad62fde R09: ffffffff8ad62fdf R10: 0000000000129fed R11: 0000000000000001 R12: ffff8880ba5075c5 R13: ffff8880ba5075c8 R14: ffff8880ba5075e0 R15: ffff8880ba507590 FS: 00007fd996004700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000008e6a000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> unwind_next_frame+0xc98/0x17d0 arch/x86/kernel/unwind_orc.c:425 __save_stack_trace+0x90/0x160 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 kmem_cache_alloc_node_trace+0x153/0x400 mm/slab.c:3661 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3696 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0x96/0x510 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:980 [inline] _sctp_make_chunk+0x44/0x250 net/sctp/sm_make_chunk.c:1392 sctp_make_control net/sctp/sm_make_chunk.c:1433 [inline] sctp_make_heartbeat+0x7b/0x340 net/sctp/sm_make_chunk.c:1152 sctp_sf_heartbeat.constprop.0+0x21/0x170 net/sctp/sm_statefuns.c:981 sctp_sf_sendbeat_8_3+0x34e/0x4f0 net/sctp/sm_statefuns.c:1025 sctp_do_sm+0x13d/0x4c70 net/sctp/sm_sideeffect.c:1147 sctp_generate_heartbeat_event+0x273/0x440 net/sctp/sm_sideeffect.c:391 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319 __run_timers kernel/time/timer.c:1637 [inline] run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 </IRQ> RIP: 0010:release_pages+0x179/0xbf0 mm/swap.c:780 RSP: 0018:ffff888040cdf6c0 EFLAGS: 00000207 ORIG_RAX: ffffffffffffff10 RAX: ffff88805da90200 RBX: 00000000000001fe RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000000000001fe RDI: ffff88809598b010 RBP: ffffea0002d2ba80 R08: ffffed101184ae00 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffea0002d2ba9c R14: ffff88809598b6a0 R15: dffffc0000000000 tlb_flush_mmu_free+0xc1/0x1a0 mm/memory.c:272 zap_pte_range mm/memory.c:1421 [inline] zap_pmd_range mm/memory.c:1456 [inline] zap_pud_range mm/memory.c:1485 [inline] zap_p4d_range mm/memory.c:1506 [inline] unmap_page_range+0x1533/0x1ce0 mm/memory.c:1527 unmap_single_vma+0x147/0x2b0 mm/memory.c:1572 unmap_vmas+0x9d/0x160 mm/memory.c:1602 exit_mmap+0x270/0x4d0 mm/mmap.c:3058 __mmput kernel/fork.c:930 [inline] mmput kernel/fork.c:951 [inline] mmput+0xfa/0x420 kernel/fork.c:946 exit_mm kernel/exit.c:548 [inline] do_exit+0x984/0x2850 kernel/exit.c:855 do_group_exit+0x100/0x2e0 kernel/exit.c:965 get_signal+0x38d/0x1ca0 kernel/signal.c:2423 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:792 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x466459 RSP: 002b:00007fd996004188 EFLAGS: 00000246 ORIG_RAX: 000000000000010e RAX: fffffffffffffdfe RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000040 RBP: 00000000004bf9fb R08: 0000000020000200 R09: 0000000000000000 R10: 0000000020000140 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fffc880390f R14: 00007fd996004300 R15: 0000000000022000 Code: 4e 5b 00 eb a8 48 89 ef e8 2e 4f 5b 00 eb c4 48 89 ef e8 24 4f 5b 00 eb de 66 90 48 8b 07 48 89 06 c3 66 0f 1f 84 00 00 00 00 00 <48> b8 00 00 00 00 00 fc ff df 41 56 41 55 49 89 d5 41 54 49 89 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 7244 Comm: agetty Not tainted 4.14.227-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888093d44640 task.stack: ffff888235a68000 RIP: 0010:entry_SYSCALL_64_after_hwframe+0x5/0xbb RSP: 0018:ffff888235a6ffb0 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f50714c2910 RDX: 0000000000000001 RSI: 00007fff446901cf RDI: 0000000000000000 RBP: 0000000000000008 R08: ffffffffffffff98 R09: 00007fff4468f020 R10: 000000000000016d R11: 0000000000000246 R12: 0000000000000000 R13: 000056387b074900 R14: 00007fff446901d0 R15: 0000000000000012 FS: 00007f50719a5500(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c016365000 CR3: 000000009f767000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Code: 66 90 0f 01 f8 65 48 89 24 25 60 d1 01 00 65 48 8b 24 25 0c 90 00 00 6a 2b 65 ff 34 25 60 d1 01 00 41 53 6a 33 51 50 57 56 52 51 <6a> da 41 50 41 51 41 52 41 53 53 55 41 54 41 55 41 56 41 57 31