================================================================================ UBSAN: Undefined behaviour in ./include/net/sch_generic.h:1051:7 shift exponent 129 is too large for 32-bit type 'int' CPU: 0 PID: 3739 Comm: syz-executor.2 Not tainted 4.19.152-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x22c/0x33e lib/dump_stack.c:118 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161 __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422 qdisc_l2t include/net/sch_generic.h:1051 [inline] cbq_update net/sched/sch_cbq.c:567 [inline] cbq_dequeue.cold+0x189/0x18e net/sched/sch_cbq.c:814 dequeue_skb net/sched/sch_generic.c:282 [inline] qdisc_restart net/sched/sch_generic.c:385 [inline] __qdisc_run+0x1b9/0x1680 net/sched/sch_generic.c:403 __dev_xmit_skb net/core/dev.c:3500 [inline] __dev_queue_xmit+0x15ef/0x2ec0 net/core/dev.c:3807 neigh_hh_output include/net/neighbour.h:491 [inline] neigh_output include/net/neighbour.h:499 [inline] ip_finish_output2+0xc04/0x1640 net/ipv4/ip_output.c:230 ip_finish_output+0x88e/0xd80 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip_output+0x203/0x650 net/ipv4/ip_output.c:406 dst_output include/net/dst.h:455 [inline] ip_local_out+0xaf/0x170 net/ipv4/ip_output.c:125 ip_send_skb net/ipv4/ip_output.c:1447 [inline] ip_push_pending_frames+0x8b/0x140 net/ipv4/ip_output.c:1467 icmp_push_reply+0x3e9/0x580 net/ipv4/icmp.c:395 __icmp_send+0xcd4/0x1550 net/ipv4/icmp.c:744 ipv4_send_dest_unreach net/ipv4/route.c:1220 [inline] ipv4_link_failure+0x623/0xa40 net/ipv4/route.c:1227 dst_link_failure include/net/dst.h:438 [inline] arp_error_report+0xc7/0x190 net/ipv4/arp.c:297 neigh_invalidate+0x22c/0x540 net/core/neighbour.c:900 neigh_timer_handler+0x9b0/0xc70 net/core/neighbour.c:986 call_timer_fn+0x177/0x760 kernel/time/timer.c:1338 expire_timers+0x243/0x500 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1703 [inline] run_timer_softirq+0x259/0x730 kernel/time/timer.c:1716 __do_softirq+0x27d/0xad2 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x22d/0x270 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:544 [inline] smp_apic_timer_interrupt+0x15f/0x5d0 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:200 [inline] RIP: 0010:atomic_try_cmpxchg include/asm-generic/atomic-instrumented.h:73 [inline] RIP: 0010:atomic_fetch_add_unless include/linux/atomic.h:580 [inline] RIP: 0010:atomic_add_unless include/linux/atomic.h:597 [inline] RIP: 0010:page_ref_add_unless include/linux/page_ref.h:157 [inline] RIP: 0010:get_page_unless_zero include/linux/mm.h:531 [inline] RIP: 0010:page_cache_get_speculative include/linux/pagemap.h:186 [inline] RIP: 0010:find_get_entry+0x29e/0x910 mm/filemap.c:1471 Code: 04 00 00 00 89 04 24 e8 b0 df 1d 00 48 8b 7c 24 28 be 04 00 00 00 e8 91 df 1d 00 8b 5c 24 58 8b 0c 24 89 d8 f0 41 0f b1 0c 24 <0f> 94 c2 31 ff 89 c3 89 d6 88 14 24 e8 d1 a6 e4 ff 0f b6 14 24 84 RSP: 0018:ffff8880460bf988 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000002 RBX: 0000000000000002 RCX: 0000000000000003 RDX: ffffed1008c17f3d RSI: 0000000000000004 RDI: ffff8880460bf9e0 RBP: ffffea0001217cc0 R08: 0000000000000000 R09: ffffed1008c17f3c R10: 0000000000000003 R11: 0000000000000002 R12: ffffea0001217cf4 R13: ffffea0001217cc0 R14: ffff888097e78ab8 R15: dffffc0000000000 pagecache_get_page+0x56/0xd90 mm/filemap.c:1564 find_get_page_flags include/linux/pagemap.h:278 [inline] __find_get_block_slow fs/buffer.c:206 [inline] __find_get_block+0x5f1/0x1080 fs/buffer.c:1295 sb_find_get_block include/linux/buffer_head.h:346 [inline] recently_deleted fs/ext4/ialloc.c:685 [inline] find_inode_bit+0x285/0x5b0 fs/ext4/ialloc.c:725 __ext4_new_inode+0x174c/0x5e40 fs/ext4/ialloc.c:917 ext4_symlink+0x3f5/0xc00 fs/ext4/namei.c:3146 vfs_symlink+0x3ac/0x630 fs/namei.c:4129 do_symlinkat+0x258/0x2c0 fs/namei.c:4156 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45db87 Code: 0f 1f 00 b8 5c 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 cd b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 58 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffde49d7bc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045db87 RDX: 00007ffde49d7c67 RSI: 00000000004c3880 RDI: 00007ffde49d7c50 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000017 R10: 0000000000000075 R11: 0000000000000202 R12: 0000000000000001 R13: 00007ffde49d7c00 R14: 0000000000000000 R15: 00007ffde49d7c10 ================================================================================ x_tables: duplicate underflow at hook 3 tmpfs: Bad value 'bind=relative:' for mount option 'mpol' tmpfs: Bad value 'bind=relative:' for mount option 'mpol' x_tables: duplicate underflow at hook 2 x_tables: duplicate underflow at hook 2 tmpfs: Bad value 'bind=relative:' for mount option 'mpol' tmpfs: Bad value 'bind=relative:' for mount option 'mpol' x_tables: duplicate underflow at hook 2 x_tables: duplicate underflow at hook 3 audit: type=1800 audit(1603110086.612:26): pid=4168 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.0" name="file0" dev="sda1" ino=16444 res=0