syzbot

watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor068:11215]
Modules linked in:
irq event stamp: 2182679
hardirqs last  enabled at (2182678): [<ffffffff81003ce4>] trace_hardirqs_on_thunk+0x1a/0x1c
hardirqs last disabled at (2182679): [<ffffffff81003d00>] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last  enabled at (2169828): [<ffffffff88400678>] __do_softirq+0x678/0x980 kernel/softirq.c:318
softirqs last disabled at (2169831): [<ffffffff81392705>] invoke_softirq kernel/softirq.c:372 [inline]
softirqs last disabled at (2169831): [<ffffffff81392705>] irq_exit+0x215/0x260 kernel/softirq.c:412
CPU: 0 PID: 11215 Comm: syz-executor068 Not tainted 4.19.201-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:unwind_get_return_address arch/x86/kernel/unwind_orc.c:297 [inline]
RIP: 0010:unwind_get_return_address+0x2d/0x90 arch/x86/kernel/unwind_orc.c:292
Code: 00 00 00 00 fc ff df 48 89 fa 55 48 c1 ea 03 53 48 89 fb 0f b6 04 02 84 c0 74 04 3c 03 7e 51 8b 03 85 c0 75 05 5b 31 c0 5d c3 <48> 8d 6b 48 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80
RSP: 0000:ffff8880ba007858 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000002 RBX: ffff8880ba007880 RCX: 0000000000000000
RDX: 1ffff11017400f10 RSI: ffff8880ba0076e0 RDI: ffff8880ba007880
RBP: ffff8880ba007900 R08: 0000000000000001 R09: 0000000000000001
R10: ffff8880ba0078df R11: 0000000000074071 R12: ffff8880ba007918
R13: 0000000000000000 R14: ffff88813bff0940 R15: 0000000000000200
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000aa40f000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __save_stack_trace+0xaf/0x190 arch/x86/kernel/stacktrace.c:45
 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
 __do_kmalloc_node mm/slab.c:3689 [inline]
 __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3703
 __kmalloc_reserve net/core/skbuff.c:137 [inline]
 __alloc_skb+0xae/0x560 net/core/skbuff.c:205
 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407
 netdev_alloc_skb include/linux/skbuff.h:2680 [inline]
 dev_alloc_skb include/linux/skbuff.h:2693 [inline]
 __ieee80211_beacon_get+0xc7d/0x1a30 net/mac80211/tx.c:4332
 ieee80211_beacon_get_tim+0x88/0x890 net/mac80211/tx.c:4443
 ieee80211_beacon_get include/net/mac80211.h:4484 [inline]
 mac80211_hwsim_beacon_tx+0xff/0x680 drivers/net/wireless/mac80211_hwsim.c:1577
 __iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614
 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650
 mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615
 __tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601
 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: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
 </IRQ>
RIP: 0010:__read_once_size include/linux/compiler.h:261 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:69 [inline]
RIP: 0010:write_comp_data+0x1d/0x70 kernel/kcov.c:122
Code: d1 48 89 11 c3 0f 1f 84 00 00 00 00 00 49 89 f1 49 89 fa 65 48 8b 34 25 80 df 01 00 65 8b 05 1a 5c 9f 7e a9 00 01 1f 00 75 4f <8b> 86 60 13 00 00 83 f8 03 75 44 48 8b 86 68 13 00 00 8b b6 64 13
RSP: 0000:ffff88809d207770 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffffea000231be80 RCX: ffffffff818b8ef2
RDX: 0000000000000000 RSI: ffff888092404180 RDI: 0000000000000007
RBP: ffffea000231be88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000000 R12: ffffea000231be48
R13: ffffea000231be80 R14: dffffc0000000000 R15: 0000000000460000
 compound_head include/linux/page-flags.h:144 [inline]
 PageSwapBacked include/linux/page-flags.h:295 [inline]
 mm_counter_file include/linux/mm.h:1642 [inline]
 mm_counter include/linux/mm.h:1651 [inline]
 zap_pte_range mm/memory.c:1349 [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+0x13f2/0x2c50 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+0x277/0x2d0 arch/x86/entry/common.c:198
 retint_user+0x8/0x18
RIP: 0033:0x404024
Code: Bad RIP value.
RSP: 002b:00007ffd86e7bc50 EFLAGS: 00010217
RAX: 0000000000000004 RBX: 000000000015367a RCX: 000000000044c3d9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 000000002001d000
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd86e7bc70
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd86e7bc68
R13: 00007ffd86e7bc80 R14: 00007ffd86e7bcc0 R15: 0000000000000114
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11373 Comm: syz-executor068 Not tainted 4.19.201-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:match_held_lock kernel/locking/lockdep.c:3477 [inline]
RIP: 0010:__lock_is_held+0xc7/0x160 kernel/locking/lockdep.c:3728
Code: af f7 ff ff 85 c0 75 2f 83 c5 01 41 39 af 80 08 00 00 7e 70 48 63 c5 48 8d 04 80 49 8d 1c c4 48 8d 7b 10 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 75 6e 4c 3b 73 10 75 95 83 7c 24 04 ff b8 01 00 00
RSP: 0018:ffff8880ba107d98 EFLAGS: 00000806
RAX: 1ffff11012a0612b RBX: ffff888095030948 RCX: ffffffff81542ec9
RDX: 1ffff11012a06128 RSI: 00000000ffffffff RDI: ffff888095030958
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: ffffffff8c66405b R12: ffff888095030948
R13: dffffc0000000000 R14: ffff8880ba124c98 R15: ffff8880950300c0
FS:  0000000001445300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd86e7bc28 CR3: 00000000a4c4a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_is_held_type+0x10d/0x210 kernel/locking/lockdep.c:3946
 lock_is_held include/linux/lockdep.h:344 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1387 [inline]
 __hrtimer_run_queues+0x5c8/0xe60 kernel/time/hrtimer.c:1481
 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1539
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline]
 smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:184
Code: 48 c7 c0 88 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 2f 48 83 3d 0c 69 d8 01 00 74 15 48 89 df 57 9d <0f> 1f 44 00 00 eb b2 e8 8b 23 e7 f8 eb c0 0f 0b 0f 0b 48 c7 c7 88
RSP: 0018:ffff88808f7e7720 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3051 RBX: 0000000000000282 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000282
RBP: ffffffff8d469188 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: ffff888088a00000 R14: 0000000000000004 R15: dffffc0000000000
 __debug_check_no_obj_freed lib/debugobjects.c:798 [inline]
 debug_check_no_obj_freed+0x201/0x490 lib/debugobjects.c:817
 free_pages_prepare mm/page_alloc.c:1056 [inline]
 __free_pages_ok+0x22d/0xd30 mm/page_alloc.c:1279
 release_pages+0xab5/0x15a0 mm/swap.c:768
 tlb_flush_mmu_free mm/memory.c:261 [inline]
 tlb_flush_mmu+0x1dc/0x4f0 mm/memory.c:270
 arch_tlb_finish_mmu mm/memory.c:285 [inline]
 tlb_finish_mmu+0x108/0x200 mm/memory.c:444
 exit_mmap+0x2d9/0x530 mm/mmap.c:3095
 __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: 0033:0x404024
Code: 70 d0 01 20 00 00 00 00 c7 04 25 74 d0 01 20 00 00 00 00 48 c7 04 25 78 d0 01 20 00 00 00 00 e8 a2 83 04 00 48 83 f8 ff 74 07 <48> 89 05 e5 70 0b 00 50 4c 8b 0d dd 70 0b 00 31 c9 ba 00 30 00 00
RSP: 002b:00007ffd86e7bc50 EFLAGS: 00010217
RAX: 0000000000000004 RBX: 00000000001599b3 RCX: 000000000044c3d9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 000000002001d000
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd86e7bc70
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd86e7bc68
R13: 00007ffd86e7bc80 R14: 00007ffd86e7bcc0 R15: 000000000000013c