================================ WARNING: inconsistent lock state 4.17.0-rc2+ #22 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor1/4548 [HC1[1]:SC0[0]:HE0:SE1] takes: (ptrval) (fs_reclaim){?.+.}, at: fs_reclaim_acquire.part.82+0x0/0x30 mm/page_alloc.c:463 {HARDIRQ-ON-W} state was registered at: lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920 fs_reclaim_acquire.part.82+0x24/0x30 mm/page_alloc.c:3739 fs_reclaim_acquire+0x14/0x20 mm/page_alloc.c:3740 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node_trace+0x39/0x770 mm/slab.c:3661 kmalloc_node include/linux/slab.h:550 [inline] kzalloc_node include/linux/slab.h:712 [inline] alloc_worker+0xbd/0x2e0 kernel/workqueue.c:1704 init_rescuer.part.25+0x1f/0x190 kernel/workqueue.c:4000 init_rescuer kernel/workqueue.c:3997 [inline] workqueue_init+0x51f/0x7d0 kernel/workqueue.c:5732 kernel_init_freeable+0x2ad/0x58e init/main.c:1115 kernel_init+0x11/0x1b3 init/main.c:1053 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 irq event stamp: 788816 hardirqs last enabled at (788815): [] restore_regs_and_return_to_kernel+0x0/0x2b hardirqs last disabled at (788816): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (788790): [] spin_unlock_bh include/linux/spinlock.h:355 [inline] softirqs last enabled at (788790): [] release_sock+0x1e2/0x2b0 net/core/sock.c:2864 cannot load conntrack support for proto=7 softirqs last disabled at (788788): [] spin_lock_bh include/linux/spinlock.h:315 [inline] softirqs last disabled at (788788): [] release_sock+0x74/0x2b0 net/core/sock.c:2851 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(fs_reclaim); lock(fs_reclaim); *** DEADLOCK *** 1 lock held by syz-executor1/4548: #0: (ptrval) (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x48/0x440 net/netfilter/x_tables.c:1210 stack backtrace: CPU: 1 PID: 4548 Comm: syz-executor1 Not tainted 4.17.0-rc2+ #22 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+0x1b9/0x294 lib/dump_stack.c:113 print_usage_bug.cold.59+0x320/0x41a kernel/locking/lockdep.c:2542 valid_state kernel/locking/lockdep.c:2555 [inline] mark_lock_irq kernel/locking/lockdep.c:2749 [inline] mark_lock+0x1034/0x19e0 kernel/locking/lockdep.c:3147 mark_irqflags kernel/locking/lockdep.c:3022 [inline] __lock_acquire+0x1595/0x5140 kernel/locking/lockdep.c:3388 lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920 fs_reclaim_acquire.part.82+0x24/0x30 mm/page_alloc.c:3739 fs_reclaim_acquire+0x14/0x20 mm/page_alloc.c:3740 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x45/0x760 mm/slab.c:3727 kmalloc_array include/linux/slab.h:631 [inline] kcalloc include/linux/slab.h:642 [inline] numa_crng_init drivers/char/random.c:798 [inline] crng_reseed+0x427/0x920 drivers/char/random.c:923 credit_entropy_bits+0x98d/0xa30 drivers/char/random.c:708 add_interrupt_randomness+0x494/0x860 drivers/char/random.c:1254 handle_irq_event_percpu+0xf9/0x1c0 kernel/irq/handle.c:191 handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206 handle_edge_irq+0x20f/0x870 kernel/irq/chip.c:791 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x18c/0x2e7 arch/x86/kernel/irq_64.c:77 do_IRQ+0x78/0x190 arch/x86/kernel/irq.c:245 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642 RIP: 0010:kvmalloc_node+0x6/0x100 mm/util.c:397 RSP: 0018:ffff88019d5f78b0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd5 RAX: 0000000000000010 RBX: dffffc0000000000 RCX: ffffffff862084da RDX: 0000000000000000 RSI: 00000000014000c0 RDI: 0000000000000010 RBP: ffff88019d5f78b8 R08: ffff8801adfbe5c0 R09: ffffed003b5e46c2 R10: ffffed003b5e46c2 R11: ffff8801daf23613 R12: 0000000000000000 R13: ffff8801ae180940 R14: ffff8801d9b19940 R15: 0000000000000000 xt_jumpstack_alloc net/netfilter/x_tables.c:1327 [inline] xt_replace_table+0x249/0xa30 net/netfilter/x_tables.c:1366 __do_replace+0x2c3/0xac0 net/ipv6/netfilter/ip6_tables.c:1086 do_replace net/ipv6/netfilter/ip6_tables.c:1159 [inline] do_ip6t_set_ctl+0x49c/0x64b net/ipv6/netfilter/ip6_tables.c:1683 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x7d/0xd0 net/netfilter/nf_sockopt.c:115 ipv6_setsockopt+0x105/0x170 net/ipv6/ipv6_sockglue.c:927 tcp_setsockopt+0x93/0xe0 net/ipv4/tcp.c:3029 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3042 __sys_setsockopt+0x1bd/0x390 net/socket.c:1903 __do_sys_setsockopt net/socket.c:1914 [inline] __se_sys_setsockopt net/socket.c:1911 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45848a RSP: 002b:0000000000a3e328 EFLAGS: 00000206 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000a3e350 RCX: 000000000045848a RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000013 RBP: 00000000007011a0 R08: 0000000000000558 R09: 0000000000004000 R10: 00000000006ffd00 R11: 0000000000000206 R12: 0000000000000013 R13: 0000000000000000 R14: 0000000000000029 R15: 00000000006ffd60 BUG: sleeping function called from invalid context at mm/slab.h:421 in_atomic(): 1, irqs_disabled(): 1, pid: 4548, name: syz-executor1 INFO: lockdep is turned off. irq event stamp: 788816 hardirqs last enabled at (788815): [] restore_regs_and_return_to_kernel+0x0/0x2b hardirqs last disabled at (788816): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (788790): [] spin_unlock_bh include/linux/spinlock.h:355 [inline] softirqs last enabled at (788790): [] release_sock+0x1e2/0x2b0 net/core/sock.c:2864 softirqs last disabled at (788788): [] spin_lock_bh include/linux/spinlock.h:315 [inline] softirqs last disabled at (788788): [] release_sock+0x74/0x2b0 net/core/sock.c:2851 CPU: 1 PID: 4548 Comm: syz-executor1 Not tainted 4.17.0-rc2+ #22 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+0x1b9/0x294 lib/dump_stack.c:113 ___might_sleep.cold.87+0x11f/0x13a kernel/sched/core.c:6188 __might_sleep+0x95/0x190 kernel/sched/core.c:6141 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x2b9/0x760 mm/slab.c:3727 kmalloc_array include/linux/slab.h:631 [inline] kcalloc include/linux/slab.h:642 [inline] numa_crng_init drivers/char/random.c:798 [inline] crng_reseed+0x427/0x920 drivers/char/random.c:923 credit_entropy_bits+0x98d/0xa30 drivers/char/random.c:708 add_interrupt_randomness+0x494/0x860 drivers/char/random.c:1254 handle_irq_event_percpu+0xf9/0x1c0 kernel/irq/handle.c:191 handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206 handle_edge_irq+0x20f/0x870 kernel/irq/chip.c:791 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x18c/0x2e7 arch/x86/kernel/irq_64.c:77 do_IRQ+0x78/0x190 arch/x86/kernel/irq.c:245 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642 RIP: 0010:kvmalloc_node+0x6/0x100 mm/util.c:397 RSP: 0018:ffff88019d5f78b0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd5 RAX: 0000000000000010 RBX: dffffc0000000000 RCX: ffffffff862084da RDX: 0000000000000000 RSI: 00000000014000c0 RDI: 0000000000000010 RBP: ffff88019d5f78b8 R08: ffff8801adfbe5c0 R09: ffffed003b5e46c2 R10: ffffed003b5e46c2 R11: ffff8801daf23613 R12: 0000000000000000 R13: ffff8801ae180940 R14: ffff8801d9b19940 R15: 0000000000000000 xt_jumpstack_alloc net/netfilter/x_tables.c:1327 [inline] xt_replace_table+0x249/0xa30 net/netfilter/x_tables.c:1366 __do_replace+0x2c3/0xac0 net/ipv6/netfilter/ip6_tables.c:1086 do_replace net/ipv6/netfilter/ip6_tables.c:1159 [inline] do_ip6t_set_ctl+0x49c/0x64b net/ipv6/netfilter/ip6_tables.c:1683 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x7d/0xd0 net/netfilter/nf_sockopt.c:115 ipv6_setsockopt+0x105/0x170 net/ipv6/ipv6_sockglue.c:927 tcp_setsockopt+0x93/0xe0 net/ipv4/tcp.c:3029 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3042 __sys_setsockopt+0x1bd/0x390 net/socket.c:1903 __do_sys_setsockopt net/socket.c:1914 [inline] __se_sys_setsockopt net/socket.c:1911 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45848a RSP: 002b:0000000000a3e328 EFLAGS: 00000206 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000a3e350 RCX: 000000000045848a RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000013 RBP: 00000000007011a0 R08: 0000000000000558 R09: 0000000000004000 R10: 00000000006ffd00 R11: 0000000000000206 R12: 0000000000000013 R13: 0000000000000000 R14: 0000000000000029 R15: 00000000006ffd60 random: crng init done cannot load conntrack support for proto=7 cannot load conntrack support for proto=7 do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app netlink: 'syz-executor1': attribute type 4 has an invalid length. do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app netlink: 'syz-executor1': attribute type 4 has an invalid length. netlink: 'syz-executor1': attribute type 4 has an invalid length. netlink: 'syz-executor1': attribute type 4 has an invalid length.