Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 315674 pages reserved ============================= WARNING: suspicious RCU usage 4.14.152+ #0 Not tainted ----------------------------- ./include/linux/radix-tree.h:238 suspicious rcu_dereference_check() usage! syz-executor.1: other info that might help us debug this: vmalloc: allocation failure: 0 bytes rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syz-executor.2/12288: #0: (&sb->s_type->i_mutex_key#10){+.+.}, at: [<00000000662e7f5e>] inode_lock include/linux/fs.h:724 [inline] #0: (&sb->s_type->i_mutex_key#10){+.+.}, at: [<00000000662e7f5e>] shmem_add_seals+0x12b/0xf80 mm/shmem.c:2831 #1: (&(&mapping->tree_lock)->rlock){-.-.}, at: [<00000000f3ba7720>] spin_lock_irq include/linux/spinlock.h:342 [inline] #1: (&(&mapping->tree_lock)->rlock){-.-.}, at: [<00000000f3ba7720>] shmem_tag_pins mm/shmem.c:2685 [inline] #1: (&(&mapping->tree_lock)->rlock){-.-.}, at: [<00000000f3ba7720>] shmem_wait_for_pins mm/shmem.c:2726 [inline] #1: (&(&mapping->tree_lock)->rlock){-.-.}, at: [<00000000f3ba7720>] shmem_add_seals+0x2e1/0xf80 mm/shmem.c:2843 stack backtrace: CPU: 1 PID: 12288 Comm: syz-executor.2 Not tainted 4.14.152+ #0 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xca/0x134 lib/dump_stack.c:53 radix_tree_deref_slot include/linux/radix-tree.h:238 [inline] shmem_tag_pins mm/shmem.c:2687 [inline] shmem_wait_for_pins mm/shmem.c:2726 [inline] shmem_add_seals+0x9d2/0xf80 mm/shmem.c:2843 , mode:0x14000c0(GFP_KERNEL), nodemask= shmem_fcntl+0xea/0x120 mm/shmem.c:2878 do_fcntl+0x5c8/0xd20 fs/fcntl.c:421 (null) SYSC_fcntl fs/fcntl.c:463 [inline] SyS_fcntl+0xc6/0x100 fs/fcntl.c:448 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a219 RSP: 002b:00007f1890c61c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000048 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 RDX: 000000000000000d RSI: 0000000000000409 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1890c626d4 R13: 00000000004c0c3d R14: 00000000004d3820 R15: 00000000ffffffff CPU: 0 PID: 12292 Comm: syz-executor.1 Not tainted 4.14.152+ #0 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xca/0x134 lib/dump_stack.c:53 warn_alloc.cold+0x91/0x1ab mm/page_alloc.c:3319 __vmalloc_node_range mm/vmalloc.c:1796 [inline] __vmalloc_node_range+0x3b5/0x6d0 mm/vmalloc.c:1756 __vmalloc_node mm/vmalloc.c:1825 [inline] __vmalloc_node_flags mm/vmalloc.c:1839 [inline] vmalloc+0x60/0x80 mm/vmalloc.c:1861 sel_write_load+0x199/0xfb0 security/selinux/selinuxfs.c:495 __vfs_write+0xf9/0x5a0 fs/read_write.c:482 EXT4-fs: 25 callbacks suppressed EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): re-mounted. Opts: vfs_write+0x17f/0x4d0 fs/read_write.c:546 SYSC_write fs/read_write.c:594 [inline] SyS_write+0x102/0x250 fs/read_write.c:586 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a219 RSP: 002b:00007f2956933c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f29569346d4 R13: 00000000004cac50 R14: 00000000004e3180 R15: 00000000ffffffff EXT4-fs (sda1): re-mounted. Opts: syz-executor.1: vmalloc: allocation failure: 0 bytes, mode:0x14000c0(GFP_KERNEL), nodemask=(null) CPU: 0 PID: 12324 Comm: syz-executor.1 Not tainted 4.14.152+ #0 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xca/0x134 lib/dump_stack.c:53 warn_alloc.cold+0x91/0x1ab mm/page_alloc.c:3319 __vmalloc_node_range mm/vmalloc.c:1796 [inline] __vmalloc_node_range+0x3b5/0x6d0 mm/vmalloc.c:1756 __vmalloc_node mm/vmalloc.c:1825 [inline] __vmalloc_node_flags mm/vmalloc.c:1839 [inline] vmalloc+0x60/0x80 mm/vmalloc.c:1861 sel_write_load+0x199/0xfb0 security/selinux/selinuxfs.c:495 __vfs_write+0xf9/0x5a0 fs/read_write.c:482 vfs_write+0x17f/0x4d0 fs/read_write.c:546 SYSC_write fs/read_write.c:594 [inline] SyS_write+0x102/0x250 fs/read_write.c:586 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a219 RSP: 002b:00007f2956933c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f29569346d4 R13: 00000000004cac50 R14: 00000000004e3180 R15: 00000000ffffffff warn_alloc_show_mem: 1 callbacks suppressed Mem-Info: active_anon:694232 inactive_anon:37 isolated_anon:0 active_file:9282 inactive_file:12528 isolated_file:0 unevictable:1 dirty:145 writeback:0 unstable:0 slab_reclaimable:8264 slab_unreclaimable:70842 mapped:59426 shmem:47 pagetables:19811 bounce:0 free:755547 free_pcp:578 free_cma:0 Node 0 active_anon:2776752kB inactive_anon:144kB active_file:37128kB inactive_file:50108kB unevictable:4kB isolated(anon):0kB isolated(file):0kB mapped:237580kB dirty:572kB writeback:0kB shmem:188kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no EXT4-fs (sda1): re-mounted. Opts: DMA32 free:2848008kB min:4684kB low:7692kB high:10700kB active_anon:97292kB inactive_anon:0kB active_file:3144kB inactive_file:1020kB unevictable:4kB writepending:12kB present:3145324kB managed:3011996kB mlocked:4kB kernel_stack:3744kB pagetables:8752kB bounce:0kB free_pcp:1428kB local_pcp:708kB free_cma:0kB lowmem_reserve[]: 0 3505 3505 Normal free:173384kB min:5588kB low:9176kB high:12764kB active_anon:2679956kB inactive_anon:152kB active_file:33984kB inactive_file:49104kB unevictable:0kB writepending:652kB present:4718592kB managed:3589224kB mlocked:0kB kernel_stack:22272kB pagetables:70664kB bounce:0kB free_pcp:984kB local_pcp:672kB free_cma:0kB EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): Mount option "nouser_xattr" will be removed by 3.5 Contact linux-ext4@vger.kernel.org if you think we should keep it. lowmem_reserve[]: 0 0 0 DMA32: 6304*4kB (UME) 3892*8kB (UME) 2292*16kB (UME) 2160*32kB (UME) 1575*64kB (UME) 1149*128kB (UME) 508*256kB (UM) 108*512kB (UME) 22*1024kB (UME) 7*2048kB (UM) 541*4096kB (M) = 2848160kB Normal: 122*4kB (UE) 6179*8kB (UME) 3566*16kB (UME) 1497*32kB (UME) 281*64kB (UM) 3*128kB (M) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 173248kB EXT4-fs (sda1): re-mounted. Opts: nouser_xattr, 21856 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 EXT4-fs (sda1): Mount option "nouser_xattr" will be removed by 3.5 Contact linux-ext4@vger.kernel.org if you think we should keep it. Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 315674 pages reserved EXT4-fs (sda1): re-mounted. Opts: nouser_xattr, EXT4-fs (sda1): re-mounted. Opts: syz-executor.1: vmalloc: allocation failure: 0 bytes, mode:0x14000c0(GFP_KERNEL), nodemask=(null) CPU: 0 PID: 12384 Comm: syz-executor.1 Not tainted 4.14.152+ #0 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xca/0x134 lib/dump_stack.c:53 warn_alloc.cold+0x91/0x1ab mm/page_alloc.c:3319 __vmalloc_node_range mm/vmalloc.c:1796 [inline] __vmalloc_node_range+0x3b5/0x6d0 mm/vmalloc.c:1756 __vmalloc_node mm/vmalloc.c:1825 [inline] __vmalloc_node_flags mm/vmalloc.c:1839 [inline] vmalloc+0x60/0x80 mm/vmalloc.c:1861 sel_write_load+0x199/0xfb0 security/selinux/selinuxfs.c:495 __vfs_write+0xf9/0x5a0 fs/read_write.c:482 vfs_write+0x17f/0x4d0 fs/read_write.c:546 SYSC_write fs/read_write.c:594 [inline] SyS_write+0x102/0x250 fs/read_write.c:586 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a219 RSP: 002b:00007f2956933c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f29569346d4 R13: 00000000004cac50 R14: 00000000004e3180 R15: 00000000ffffffff Mem-Info: active_anon:700137 inactive_anon:38 isolated_anon:0 active_file:9282 inactive_file:12531 isolated_file:0 unevictable:1 dirty:216 writeback:0 unstable:0 slab_reclaimable:8254 slab_unreclaimable:70754 mapped:59414 shmem:46 pagetables:19854 bounce:0 free:749623 free_pcp:591 free_cma:0 Node 0 active_anon:2801400kB inactive_anon:152kB active_file:37132kB inactive_file:50140kB unevictable:4kB isolated(anon):0kB isolated(file):0kB mapped:237504kB dirty:972kB writeback:0kB shmem:184kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no DMA32 free:2848408kB min:4684kB low:7692kB high:10700kB active_anon:97292kB inactive_anon:0kB active_file:3144kB inactive_file:1020kB unevictable:4kB writepending:12kB present:3145324kB managed:3011996kB mlocked:4kB kernel_stack:3744kB pagetables:8752kB bounce:0kB free_pcp:1452kB local_pcp:724kB free_cma:0kB lowmem_reserve[]: 0 3505 3505 Normal free:149124kB min:5588kB low:9176kB high:12764kB active_anon:2704708kB inactive_anon:152kB active_file:33988kB inactive_file:49120kB unevictable:0kB writepending:960kB present:4718592kB managed:3589224kB mlocked:0kB kernel_stack:22208kB pagetables:70620kB bounce:0kB free_pcp:976kB local_pcp:572kB free_cma:0kB lowmem_reserve[]: 0 0 0 DMA32: 6304*4kB (UME) 3892*8kB (UME) 2290*16kB (UME) 2169*32kB (UME) 1576*64kB (UME) 1149*128kB (UME) 508*256kB (UM) 108*512kB (UME) 22*1024kB (UME) 7*2048kB (UM) 541*4096kB (M) = 2848480kB Normal: 101*4kB (UME) 5513*8kB (UE) 2381*16kB (UME) 1504*32kB (UME) 282*64kB (UM) 3*128kB (M) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 149164kB 21862 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 315674 pages reserved selinux_nlmsg_perm: 6 callbacks suppressed SELinux: unrecognized netlink message: protocol=0 nlmsg_type=45453 sclass=netlink_route_socket pig=12640 comm=syz-executor.5 EXT4-fs: 20 callbacks suppressed EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): Mount option "nouser_xattr" will be removed by 3.5 Contact linux-ext4@vger.kernel.org if you think we should keep it. EXT4-fs (sda1): re-mounted. Opts: nouser_xattr, F2FS-fs (loop5): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop5): Can't find valid F2FS filesystem in 1th superblock EXT4-fs (sda1): Mount option "nouser_xattr" will be removed by 3.5 Contact linux-ext4@vger.kernel.org if you think we should keep it. F2FS-fs (loop5): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop5): Can't find valid F2FS filesystem in 2th superblock EXT4-fs (sda1): re-mounted. Opts: nouser_xattr, EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): re-mounted. Opts: