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UBSAN: shift-out-of-bounds in net/core/gen_estimator.c:83:38
shift exponent -24 is negative
CPU: 0 PID: 10739 Comm: syz-executor.0 Not tainted 5.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148
 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:395
 est_timer.cold+0xbb/0x12d net/core/gen_estimator.c:83
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1417
 expire_timers kernel/time/timer.c:1462 [inline]
 __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1731
 __run_timers kernel/time/timer.c:1712 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1744
 __do_softirq+0x2bc/0xa29 kernel/softirq.c:343
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __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+0xaa/0xd0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:226 [inline]
 __irq_exit_rcu kernel/softirq.c:420 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:432
 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628
RIP: 0010:compound_head include/linux/page-flags.h:186 [inline]
RIP: 0010:PageAnon include/linux/page-flags.h:483 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1254 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1368 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1397 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1418 [inline]
RIP: 0010:unmap_page_range+0xba3/0x2640 mm/memory.c:1439
Code: 48 85 ed 0f 84 11 fe ff ff e8 b9 a8 cd ff 48 8d 45 08 48 89 44 24 18 48 c1 e8 03 42 80 3c 30 00 0f 85 96 17 00 00 48 8b 45 08 <31> ff 49 89 ec 48 89 c3 48 89 84 24 80 00 00 00 83 e3 01 48 89 de
RSP: 0018:ffffc9000226f798 EFLAGS: 00000246
RAX: ffffea00011a8001 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8880785ed340 RSI: ffffffff81a522c7 RDI: ffffc9000226fa78
RBP: ffffea00011abf00 R08: 0000000000046afc R09: 0000000000000001
R10: ffffffff81a52207 R11: 0000000000000000 R12: ffffc9000226fa80
R13: ffff88805beb77e0 R14: dffffc0000000000 R15: 00000000010fd000
 unmap_single_vma+0x198/0x300 mm/memory.c:1484
 unmap_vmas+0x168/0x2e0 mm/memory.c:1516
 exit_mmap+0x2b1/0x5a0 mm/mmap.c:3220
 __mmput+0x122/0x470 kernel/fork.c:1083
 mmput+0x53/0x60 kernel/fork.c:1104
 exit_mm kernel/exit.c:501 [inline]
 do_exit+0xb6a/0x2ae0 kernel/exit.c:812
 do_group_exit+0x125/0x310 kernel/exit.c:922
 get_signal+0x3e9/0x20a0 kernel/signal.c:2770
 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
Code: Unable to access opcode bytes at RIP 0x45e1ef.
RSP: 002b:00007efe9b9dbcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000119c030 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000119c030
RBP: 000000000119c028 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034
R13: 00007fff08733f4f R14: 00007efe9b9dc9c0 R15: 000000000119c034
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