====================================================== WARNING: possible circular locking dependency detected 4.13.0-rc6-next-20170824+ #8 Not tainted ------------------------------------------------------ kworker/3:1/798 is trying to acquire lock: (&kvm->irqfds.resampler_lock){+.+.}, at: [] irqfd_resampler_shutdown+0xe3/0x6b0 arch/x86/kvm/../../../virt/kvm/eventfd.c:98 but task is already holding lock: ((&irqfd->shutdown)){+.+.}, at: [] process_one_work+0xb2c/0x1be0 kernel/workqueue.c:2094 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 ((&irqfd->shutdown)){+.+.}: process_one_work+0xba5/0x1be0 kernel/workqueue.c:2095 worker_thread+0x223/0x1860 kernel/workqueue.c:2233 kthread+0x39c/0x470 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 0xffffffffffffffff -> #1 ((complete)&rcu.completion){+.+.}: check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x3286/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 complete_acquire include/linux/completion.h:39 [inline] __wait_for_common kernel/sched/completion.c:108 [inline] wait_for_common kernel/sched/completion.c:122 [inline] wait_for_completion+0xc8/0x770 kernel/sched/completion.c:143 __synchronize_srcu+0x1b5/0x250 kernel/rcu/srcutree.c:898 synchronize_srcu_expedited kernel/rcu/srcutree.c:923 [inline] synchronize_srcu+0x1a3/0x560 kernel/rcu/srcutree.c:974 kvm_irqfd_assign arch/x86/kvm/../../../virt/kvm/eventfd.c:364 [inline] kvm_irqfd+0x994/0x1d50 arch/x86/kvm/../../../virt/kvm/eventfd.c:572 kvm_vm_ioctl+0x1079/0x1c40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3032 vfs_ioctl fs/ioctl.c:45 [inline] do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:685 SYSC_ioctl fs/ioctl.c:700 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691 entry_SYSCALL_64_fastpath+0x1f/0xbe -> #0 (&kvm->irqfds.resampler_lock){+.+.}: check_prev_add+0x865/0x1520 kernel/locking/lockdep.c:1894 check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x3286/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1870 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 irqfd_resampler_shutdown+0xe3/0x6b0 arch/x86/kvm/../../../virt/kvm/eventfd.c:98 irqfd_shutdown+0xd8/0x1a0 arch/x86/kvm/../../../virt/kvm/eventfd.c:137 process_one_work+0xbfd/0x1be0 kernel/workqueue.c:2098 worker_thread+0x223/0x1860 kernel/workqueue.c:2233 kthread+0x39c/0x470 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 other info that might help us debug this: Chain exists of: &kvm->irqfds.resampler_lock --> (complete)&rcu.completion --> (&irqfd->shutdown) Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock((&irqfd->shutdown)); lock((complete)&rcu.completion); lock((&irqfd->shutdown)); lock(&kvm->irqfds.resampler_lock); *** DEADLOCK *** 2 locks held by kworker/3:1/798: #0: ("kvm-irqfd-cleanup"){++++}, at: [] __write_once_size include/linux/compiler.h:305 [inline] #0: ("kvm-irqfd-cleanup"){++++}, at: [] atomic64_set arch/x86/include/asm/atomic64_64.h:33 [inline] #0: ("kvm-irqfd-cleanup"){++++}, at: [] atomic_long_set include/asm-generic/atomic-long.h:56 [inline] #0: ("kvm-irqfd-cleanup"){++++}, at: [] set_work_data kernel/workqueue.c:617 [inline] #0: ("kvm-irqfd-cleanup"){++++}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ("kvm-irqfd-cleanup"){++++}, at: [] process_one_work+0xad4/0x1be0 kernel/workqueue.c:2090 #1: ((&irqfd->shutdown)){+.+.}, at: [] process_one_work+0xb2c/0x1be0 kernel/workqueue.c:2094 stack backtrace: CPU: 3 PID: 798 Comm: kworker/3:1 Not tainted 4.13.0-rc6-next-20170824+ #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Workqueue: kvm-irqfd-cleanup irqfd_shutdown Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 print_circular_bug+0x503/0x710 kernel/locking/lockdep.c:1259 check_prev_add+0x865/0x1520 kernel/locking/lockdep.c:1894 check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x3286/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1870 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 irqfd_resampler_shutdown+0xe3/0x6b0 arch/x86/kvm/../../../virt/kvm/eventfd.c:98 irqfd_shutdown+0xd8/0x1a0 arch/x86/kvm/../../../virt/kvm/eventfd.c:137 process_one_work+0xbfd/0x1be0 kernel/workqueue.c:2098 worker_thread+0x223/0x1860 kernel/workqueue.c:2233 kthread+0x39c/0x470 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 PF_BRIDGE: RTM_NEWNEIGH with invalid address PF_BRIDGE: RTM_NEWNEIGH with invalid address device  entered promiscuous mode device  left promiscuous mode device  entered promiscuous mode device  left promiscuous mode audit: type=1326 audit(1503569796.964:17): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6702 comm="syz-executor5" exe="/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0x0 hid-generic 0003:0627:0001.0001: pid 6703 passed too large report device  entered promiscuous mode device  left promiscuous mode device  entered promiscuous mode device  left promiscuous mode netlink: 2 bytes leftover after parsing attributes in process `syz-executor4'. QAT: Invalid ioctl QAT: Invalid ioctl netlink: 2 bytes leftover after parsing attributes in process `syz-executor4'. QAT: Invalid ioctl QAT: Invalid ioctl audit: type=1326 audit(1503569797.813:18): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6969 comm="syz-executor1" exe="/syz-executor1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 device lo entered promiscuous mode netlink: 8 bytes leftover after parsing attributes in process `syz-executor1'. audit: type=1326 audit(1503569798.001:19): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6969 comm="syz-executor1" exe="/syz-executor1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 netlink: 8 bytes leftover after parsing attributes in process `syz-executor1'. syz-executor1: vmalloc: allocation failure: 4833356120 bytes, mode:0x14080c0(GFP_KERNEL|__GFP_ZERO), nodemask=(null) syz-executor1 cpuset=/ mems_allowed=0-1 CPU: 3 PID: 7026 Comm: syz-executor1 Not tainted 4.13.0-rc6-next-20170824+ #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 warn_alloc+0x1c2/0x2f0 mm/page_alloc.c:3254 __vmalloc_node_range+0x599/0x730 mm/vmalloc.c:1781 __vmalloc_node mm/vmalloc.c:1810 [inline] __vmalloc_node_flags_caller+0x50/0x60 mm/vmalloc.c:1832 kvmalloc_node+0x82/0xd0 mm/util.c:406 kvmalloc include/linux/mm.h:529 [inline] kvmalloc_array include/linux/mm.h:545 [inline] xt_alloc_entry_offsets+0x21/0x30 net/netfilter/x_tables.c:774 translate_table+0x235/0x1610 net/ipv4/netfilter/ip_tables.c:692 do_replace net/ipv4/netfilter/ip_tables.c:1135 [inline] do_ipt_set_ctl+0x34b/0x5c0 net/ipv4/netfilter/ip_tables.c:1669 nf_sockopt net/netfilter/nf_sockopt.c:105 [inline] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:114 ip_setsockopt+0xa1/0xb0 net/ipv4/ip_sockglue.c:1251 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2735 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2973 SYSC_setsockopt net/socket.c:1852 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1831 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x446749 RSP: 002b:00007f23d9ee9c08 EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000018 RCX: 0000000000446749 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000018 RBP: 0000000000708000 R08: 0000000000000056 R09: 0000000000000000 R10: 0000000020006000 R11: 0000000000000296 R12: 00000000ffffffff R13: 00000000000056b0 R14: 00000000006e7770 R15: 0000200000000004 warn_alloc_show_mem: 1 callbacks suppressed Mem-Info: active_anon:94847 inactive_anon:89 isolated_anon:0 active_file:3518 inactive_file:4703 isolated_file:0 unevictable:0 dirty:153 writeback:0 unstable:0 slab_reclaimable:5291 slab_unreclaimable:31660 mapped:20956 shmem:305 pagetables:748 bounce:0 free:252763 free_pcp:1012 free_cma:0 Node 0 active_anon:126672kB inactive_anon:160kB active_file:5352kB inactive_file:14916kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:45860kB dirty:396kB writeback:0kB shmem:596kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 88064kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 1 active_anon:252816kB inactive_anon:196kB active_file:8720kB inactive_file:3896kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:37964kB dirty:216kB writeback:0kB shmem:624kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 65536kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 0 DMA free:15908kB min:640kB low:800kB high:960kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 886 886 886 Node 0 DMA32 free:632176kB min:36536kB low:45668kB high:54800kB active_anon:126672kB inactive_anon:160kB active_file:5352kB inactive_file:14916kB unevictable:0kB writepending:396kB present:1032192kB managed:909748kB mlocked:0kB kernel_stack:3104kB pagetables:1456kB bounce:0kB free_pcp:2112kB local_pcp:640kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 1 DMA32 free:363728kB min:30404kB low:38004kB high:45604kB active_anon:252916kB inactive_anon:196kB active_file:8720kB inactive_file:3896kB unevictable:0kB writepending:216kB present:1048560kB managed:755216kB mlocked:0kB kernel_stack:1920kB pagetables:1388kB bounce:0kB free_pcp:2148kB local_pcp:360kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 93*4kB (UME) 96*8kB (UME) 37*16kB (UME) 125*32kB (UME) 228*64kB (UME) 109*128kB (UM) 63*256kB (UM) 22*512kB (UM) 13*1024kB (UME) 4*2048kB (M) 134*4096kB (M) = 632036kB Node 1 DMA32: 130*4kB (UM) 212*8kB (UME) 518*16kB (UME) 552*32kB (UME) 299*64kB (UM) 117*128kB (UM) 24*256kB (UM) 15*512kB (UME) 5*1024kB (UME) 2*2048kB (UM) 68*4096kB (M) = 363848kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 8540 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 524186 pages RAM 0 pages HighMem/MovableOnly 103968 pages reserved syz-executor1: vmalloc: allocation failure: 4833356120 bytes, mode:0x14080c0(GFP_KERNEL|__GFP_ZERO), nodemask=(null) syz-executor1 cpuset=/ mems_allowed=0-1 CPU: 0 PID: 7035 Comm: syz-executor1 Not tainted 4.13.0-rc6-next-20170824+ #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 warn_alloc+0x1c2/0x2f0 mm/page_alloc.c:3254 __vmalloc_node_range+0x599/0x730 mm/vmalloc.c:1781 __vmalloc_node mm/vmalloc.c:1810 [inline] __vmalloc_node_flags_caller+0x50/0x60 mm/vmalloc.c:1832 kvmalloc_node+0x82/0xd0 mm/util.c:406 kvmalloc include/linux/mm.h:529 [inline] kvmalloc_array include/linux/mm.h:545 [inline] xt_alloc_entry_offsets+0x21/0x30 net/netfilter/x_tables.c:774 translate_table+0x235/0x1610 net/ipv4/netfilter/ip_tables.c:692 do_replace net/ipv4/netfilter/ip_tables.c:1135 [inline] do_ipt_set_ctl+0x34b/0x5c0 net/ipv4/netfilter/ip_tables.c:1669 nf_sockopt net/netfilter/nf_sockopt.c:105 [inline] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:114 ip_setsockopt+0xa1/0xb0 net/ipv4/ip_sockglue.c:1251 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2735 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2973 SYSC_setsockopt net/socket.c:1852 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1831 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x446749 RSP: 002b:00007f23d9ec8c08 EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000018 RCX: 0000000000446749 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000018 RBP: 0000000000a5f870 R08: 0000000000000056 R09: 0000000000000000 R10: 0000000020006000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f23d9ec99c0 R15: 00007f23d9ec9700 RDS: rds_bind could not find a transport for 224.0.0.1, load rds_tcp or rds_rdma? netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'. RDS: rds_bind could not find a transport for 224.0.0.1, load rds_tcp or rds_rdma? audit: type=1326 audit(1503569799.258:20): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7234 comm="syz-executor6" exe="/syz-executor6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0x0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=7246 comm=syz-executor5 QAT: Invalid ioctl audit: type=1326 audit(1503569799.371:21): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7234 comm="syz-executor6" exe="/syz-executor6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0x0 netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. QAT: Invalid ioctl tty_warn_deprecated_flags: 'syz-executor1' is using deprecated serial flags (with no effect): 00000400 tty_warn_deprecated_flags: 'syz-executor1' is using deprecated serial flags (with no effect): 00000400 kvm [7384]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008f kvm [7384]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008e kvm [7384]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008d kvm [7384]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008c kvm [7384]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008b kvm [7384]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008a kvm [7384]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x40000089 kvm [7384]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x40000088 kvm [7384]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x40000087 kvm [7384]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x40000086 QAT: Invalid ioctl kvm [7384]: vcpu0, guest rIP: 0x9112 Hyper-V uhandled wrmsr: 0x40000023 data 0x66c900003b9a1043 kvm [7384]: vcpu0, guest rIP: 0x9112 Hyper-V uhandled wrmsr: 0x40000022 data 0x66c90000cb211043 kvm [7384]: vcpu0, guest rIP: 0x9112 Hyper-V uhandled wrmsr: 0x40000020 data 0x66c9000000071043 audit: type=1326 audit(1503569799.901:22): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7411 comm="syz-executor5" exe="/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 QAT: Invalid ioctl audit: type=1326 audit(1503569799.968:23): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7411 comm="syz-executor5" exe="/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 kvm: apic: phys broadcast and lowest prio kvm [7470]: vcpu0, guest rIP: 0x9112 Hyper-V uhandled wrmsr: 0x40000023 data 0x66c900003b9a1043 netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'. audit: type=1326 audit(1503569800.995:24): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7675 comm="syz-executor0" exe="/syz-executor0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 RDS: rds_bind could not find a transport for 224.0.0.1, load rds_tcp or rds_rdma? RDS: rds_bind could not find a transport for 224.0.0.1, load rds_tcp or rds_rdma? dccp_invalid_packet: P.Data Offset(172) too large SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=7779 comm=syz-executor0 dccp_invalid_packet: P.Data Offset(172) too large rfkill: input handler disabled rfkill: input handler enabled audit: type=1326 audit(1503569801.881:25): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7879 comm="syz-executor6" exe="/syz-executor6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 audit: type=1326 audit(1503569801.978:26): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7879 comm="syz-executor6" exe="/syz-executor6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 audit: type=1326 audit(1503569802.145:27): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7934 comm="syz-executor4" exe="/syz-executor4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 audit: type=1326 audit(1503569802.145:28): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7934 comm="syz-executor4" exe="/syz-executor4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 2 PID: 7981 Comm: syz-executor2 Not tainted 4.13.0-rc6-next-20170824+ #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:31 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3723 [inline] __kmalloc+0x63/0x760 mm/slab.c:3734 kmalloc include/linux/slab.h:498 [inline] kzalloc include/linux/slab.h:666 [inline] ip_options_get_alloc net/ipv4/ip_options.c:510 [inline] ip_options_get_from_user+0x38/0xd0 net/ipv4/ip_options.c:532 do_ip_setsockopt.isra.12+0x1955/0x31f0 net/ipv4/ip_sockglue.c:654 ip_setsockopt+0x3a/0xb0 net/ipv4/ip_sockglue.c:1243 udp_setsockopt+0x45/0x80 net/ipv4/udp.c:2399 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2973 SYSC_setsockopt net/socket.c:1852 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1831 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x446749 RSP: 002b:00007fd653162c08 EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000446749 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007fd653162a00 R08: 0000000000000000 R09: 0000000000000000 R10: 000000002091a000 R11: 0000000000000296 R12: 00000000004a8096 R13: 0000000000000000 R14: 00007fd6531629c8 R15: 00007fd653162b38 sctp: [Deprecated]: syz-executor4 (pid 8029) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor4 (pid 8032) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor4 (pid 8041) Use of int in max_burst socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor4 (pid 8047) Use of int in max_burst socket option. Use struct sctp_assoc_value instead device lo left promiscuous mode audit: type=1326 audit(1503569803.133:29): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=8161 comm="syz-executor0" exe="/syz-executor0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 SELinux: failure in selinux_parse_skb(), unable to parse packet audit: type=1326 audit(1503569803.245:30): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=8161 comm="syz-executor0" exe="/syz-executor0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 sock: process `syz-executor7' is using obsolete getsockopt SO_BSDCOMPAT SELinux: failure in selinux_parse_skb(), unable to parse packet sctp: [Deprecated]: syz-executor5 (pid 8236) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor5 (pid 8238) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead sg_write: data in/out 116522973/144 bytes for SCSI command 0x6c-- guessing data in; program syz-executor0 not setting count and/or reply_len properly sg_write: data in/out 116522973/144 bytes for SCSI command 0x6c-- guessing data in; program syz-executor0 not setting count and/or reply_len properly dccp_v6_rcv: dropped packet with invalid checksum pit: kvm: requested 2514 ns i8254 timer period limited to 500000 ns dccp_v6_rcv: dropped packet with invalid checksum SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=8495 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=8518 comm=syz-executor5 device lo entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=8546 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=8619 comm=syz-executor1 nla_parse: 11 callbacks suppressed netlink: 8 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor4'.