============================= WARNING: suspicious RCU usage 4.19.84 #0 Not tainted ----------------------------- include/linux/radix-tree.h:241 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syz-executor.2/9322: #0: 000000009d71d1ba (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:747 [inline] #0: 000000009d71d1ba (&sb->s_type->i_mutex_key#12){+.+.}, at: memfd_add_seals mm/memfd.c:199 [inline] #0: 000000009d71d1ba (&sb->s_type->i_mutex_key#12){+.+.}, at: memfd_fcntl+0x235/0x1750 mm/memfd.c:249 #1: 00000000b6637b9e (&(&(&mapping->i_pages)->xa_lock)->rlock){-.-.}, at: spin_lock_irq include/linux/spinlock.h:354 [inline] #1: 00000000b6637b9e (&(&(&mapping->i_pages)->xa_lock)->rlock){-.-.}, at: memfd_tag_pins mm/memfd.c:42 [inline] #1: 00000000b6637b9e (&(&(&mapping->i_pages)->xa_lock)->rlock){-.-.}, at: memfd_wait_for_pins mm/memfd.c:83 [inline] #1: 00000000b6637b9e (&(&(&mapping->i_pages)->xa_lock)->rlock){-.-.}, at: memfd_add_seals mm/memfd.c:217 [inline] #1: 00000000b6637b9e (&(&(&mapping->i_pages)->xa_lock)->rlock){-.-.}, at: memfd_fcntl+0x4bc/0x1750 mm/memfd.c:249 stack backtrace: CPU: 0 PID: 9322 Comm: syz-executor.2 Not tainted 4.19.84 #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+0x197/0x210 lib/dump_stack.c:118 lockdep_rcu_suspicious+0x153/0x15d kernel/locking/lockdep.c:4539 radix_tree_deref_slot include/linux/radix-tree.h:241 [inline] radix_tree_deref_slot include/linux/radix-tree.h:239 [inline] memfd_tag_pins mm/memfd.c:44 [inline] memfd_wait_for_pins mm/memfd.c:83 [inline] memfd_add_seals mm/memfd.c:217 [inline] memfd_fcntl+0xfdf/0x1750 mm/memfd.c:249 do_fcntl+0x200/0x1020 fs/fcntl.c:421 __do_sys_fcntl fs/fcntl.c:463 [inline] __se_sys_fcntl fs/fcntl.c:448 [inline] __x64_sys_fcntl+0x16d/0x1e0 fs/fcntl.c:448 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a639 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7034f75c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000048 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a639 RDX: 0000000000000008 RSI: 0000000000000409 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7034f766d4 R13: 00000000004c1068 R14: 00000000004d3c60 R15: 00000000ffffffff bond0: The slave device specified does not support setting the MAC address IPVS: ftp: loaded support on port[0] = 21 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device hsr_slave_1 left promiscuous mode device hsr_slave_0 left promiscuous mode team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves IPVS: ftp: loaded support on port[0] = 21 chnl_net:caif_netlink_parms(): no params data found bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered disabled state device bridge_slave_0 entered promiscuous mode bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_1 entered promiscuous mode bond0: Enslaving bond_slave_0 as an active interface with an up link bond0: Enslaving bond_slave_1 as an active interface with an up link IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready team0: Port device team_slave_0 added IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready team0: Port device team_slave_1 added IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready device hsr_slave_0 entered promiscuous mode device hsr_slave_1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state 8021q: adding VLAN 0 to HW filter on device bond0 IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready bridge0: port 1(bridge_slave_0) entered disabled state bridge0: port 2(bridge_slave_1) entered disabled state IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready 8021q: adding VLAN 0 to HW filter on device team0 IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready 8021q: adding VLAN 0 to HW filter on device batadv0 IPVS: ftp: loaded support on port[0] = 21 BTRFS: device label ðqÁˆ¸i\ÙÄ°ÿ¬—È)ÊùœtpM£ devid 8328809874230010592 transid 18438444790640683687 /dev/loop2 BTRFS error (device loop2): unsupported checksum algorithm 43662 BTRFS error (device loop2): superblock checksum mismatch loop3: [CUMANA/ADFS] p1 [Linux] p2 [ADFS] p1 [Linux] p2 loop3: partition table partially beyond EOD, truncated BTRFS error (device loop2): open_ctree failed loop3: p1 size 3238031214 extends beyond EOD, truncated loop3: p2 start 257770150 is beyond EOD, truncated SELinux: unrecognized netlink message: protocol=0 nlmsg_type=41351 sclass=netlink_route_socket pig=9425 comm=syz-executor.0 BTRFS error (device loop2): unsupported checksum algorithm 43662 BTRFS error (device loop2): superblock checksum mismatch IPVS: ftp: loaded support on port[0] = 21 BTRFS error (device loop2): open_ctree failed bridge0: port 2(bridge_slave_1) entered disabled state bridge0: port 1(bridge_slave_0) entered disabled state loop3: [CUMANA/ADFS] p1 [Linux] p2 [ADFS] p1 [Linux] p2 loop3: partition table partially beyond EOD, truncated ldm_validate_privheads(): Disk read failed. loop0: p2 < > loop0: partition table partially beyond EOD, truncated loop3: p1 size 3238031214 extends beyond EOD, truncated loop0: p2 size 2 extends beyond EOD, truncated loop3: p2 start 257770150 is beyond EOD, truncated syz-executor.1 (9435) used greatest stack depth: 21808 bytes left BTRFS error (device loop2): unsupported checksum algorithm 43662 BTRFS error (device loop2): superblock checksum mismatch BTRFS error (device loop2): open_ctree failed IPVS: ftp: loaded support on port[0] = 21 BTRFS error (device loop2): unsupported checksum algorithm 43662 BTRFS error (device loop2): superblock checksum mismatch BTRFS error (device loop2): open_ctree failed IPVS: ftp: loaded support on port[0] = 21 BTRFS error (device loop2): unsupported checksum algorithm 43662 BTRFS error (device loop2): superblock checksum mismatch BTRFS error (device loop2): open_ctree failed IPVS: ftp: loaded support on port[0] = 21 REISERFS warning (device loop3): super-6507 reiserfs_parse_options: bad value a for -oresize IPVS: ftp: loaded support on port[0] = 21 FAT-fs (loop3): Directory bread(block 7255) failed FAT-fs (loop3): Directory bread(block 7256) failed FAT-fs (loop3): Directory bread(block 7257) failed IPVS: ftp: loaded support on port[0] = 21 FAT-fs (loop3): Directory bread(block 7258) failed