===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260115 #1 Not tainted ------------------------------------- syz-executor.1/4790 is trying to release lock (rcu_read_lock) at: [] __wait_on_freeing_inode+0x105/0x350 but there are no more locks to release! other info that might help us debug this: 4 locks held by syz-executor.1/4790: #0: ffff88800f9163f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888046de2a00 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f902950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xe32/0x12d0 #3: ffffffff85c16898 (inode_hash_lock){+.+.}-{3:3}, at: insert_inode_locked+0xf9/0x890 stack backtrace: CPU: 0 UID: 0 PID: 4790 Comm: syz-executor.1 Not tainted 6.19.0-rc5-next-20260115 #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xca/0x120 print_unlock_imbalance_bug+0x118/0x130 lock_release+0x1ee/0x270 __wait_on_freeing_inode+0x10a/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7facc6c96427 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 58 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffb8db0548 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007facc6c96427 RDX: ffffffffffffffbc RSI: 00007facc6cf100e RDI: 00007facc6cf01dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffb8daffc0 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007fffb8db0610 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.1/4790 Modules linked in: CPU: 0 UID: 0 PID: 4790 Comm: syz-executor.1 Not tainted 6.19.0-rc5-next-20260115 #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__rcu_read_unlock+0x25f/0x5c0 Code: f2 02 00 00 c7 43 58 01 00 00 00 bf 09 00 00 00 e8 d6 b7 de ff 4d 85 f6 0f 84 73 fe ff ff e8 38 8a 20 00 fb e9 68 fe ff ff 90 <0f> 0b 90 5b 5d 41 5c 41 5d 41 5e e9 81 4d 74 03 e8 2c 5d 56 00 e9 RSP: 0018:ffff888049bbf9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888013ecb700 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888013ecbafc RBP: ffff888013ecb700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888013ecb700 R13: 0000000000000001 R14: ffffffff85c0c520 R15: ffff888046de4f58 FS: 00005555736a6400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555845c0c58 CR3: 000000004a1d4000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7facc6c96427 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 58 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffb8db0548 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007facc6c96427 RDX: ffffffffffffffbc RSI: 00007facc6cf100e RDI: 00007facc6cf01dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffb8daffc0 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007fffb8db0610 irq event stamp: 881 hardirqs last enabled at (881): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (880): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (876): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (874): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 audit: type=1326 audit(1768470393.899:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4899 comm="syz-executor.7" exe="/syz-executor.7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fef6534ab19 code=0x7ffc0000 audit: type=1326 audit(1768470393.907:22): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4899 comm="syz-executor.7" exe="/syz-executor.7" sig=0 arch=c000003e syscall=65 compat=0 ip=0x7fef6534ab19 code=0x7ffc0000 audit: type=1326 audit(1768470393.907:23): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4899 comm="syz-executor.7" exe="/syz-executor.7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fef6534ab19 code=0x7ffc0000 audit: type=1326 audit(1768470393.908:24): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4899 comm="syz-executor.7" exe="/syz-executor.7" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7fef6534ab19 code=0x7ffc0000 audit: type=1326 audit(1768470393.908:25): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4899 comm="syz-executor.7" exe="/syz-executor.7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fef6534ab19 code=0x7ffc0000 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium random: crng reseeded on system resumption faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 random: crng reseeded on system resumption loop7: detected capacity change from 0 to 136 isofs_fill_super: bread failed, dev=loop7, iso_blknum=34, block=68 loop7: detected capacity change from 0 to 136 isofs_fill_super: bread failed, dev=loop7, iso_blknum=34, block=68 9pnet_fd: Insufficient options for proto=fd 9pnet_fd: Insufficient options for proto=fd 9pnet_fd: Insufficient options for proto=fd 9pnet_fd: Insufficient options for proto=fd 9pnet_fd: Insufficient options for proto=fd 9pnet_fd: Insufficient options for proto=fd 9pnet_fd: Insufficient options for proto=fd 9pnet_fd: Insufficient options for proto=fd loop2: detected capacity change from 0 to 2048 EXT4-fs error (device loop2): ext4_ext_check_inode:528: inode #2: comm syz-executor.2: pblk 0 bad header/extent: invalid magic - magic 0, entries 0, max 0(0), depth 0(0) EXT4-fs (loop2): get root inode failed EXT4-fs (loop2): mount failed loop2: detected capacity change from 0 to 2048 EXT4-fs error (device loop2): ext4_ext_check_inode:528: inode #2: comm syz-executor.2: pblk 0 bad header/extent: invalid magic - magic 0, entries 0, max 0(0), depth 0(0) EXT4-fs (loop2): get root inode failed EXT4-fs (loop2): mount failed loop3: detected capacity change from 0 to 262144 vfat: Unknown parameter 'àË»âZÉžÖªšAÊ2Í™»š<Æ;¿ÿƒz+í$äšSÍS‹`⫳@ÉŒ' loop3: detected capacity change from 0 to 262144 vfat: Unknown parameter 'àË»âZÉžÖªšAÊ2Í™»š<Æ;¿ÿƒz+í$äšSÍS‹`⫳@ÉŒ' netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 blk_print_req_error: 66 callbacks suppressed I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x880700 phys_seg 4 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 buffer_io_error: 8310 callbacks suppressed Buffer I/O error on dev sr0, logical block 0, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 2, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 3 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 3, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 4 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 4, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 5 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 5, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 6 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 6, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 7 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 7, async page read sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x880700 phys_seg 4 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer Buffer I/O error on dev sr0, logical block 0, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 audit: type=1400 audit(1768470397.638:26): avc: denied { module_load } for pid=5258 comm="syz-executor.6" path=2F6D656D66643A2F70726F632F7468726561642D73656C662F617474722F6673637265617465202864656C6574656429 dev="tmpfs" ino=1045 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=system permissive=1 netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. Bluetooth: hci3: unexpected event 0x3e length: 431 > 260 Bluetooth: hci3: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci3: Malformed LE Event: 0x0d Bluetooth: hci3: unexpected event 0x3e length: 431 > 260 Bluetooth: hci3: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci3: Malformed LE Event: 0x0d Bluetooth: hci3: unexpected event 0x3e length: 431 > 260 Bluetooth: hci3: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci3: Malformed LE Event: 0x0d Bluetooth: hci3: unexpected event 0x3e length: 431 > 260 Bluetooth: hci3: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci3: Malformed LE Event: 0x0d Bluetooth: hci3: unexpected event 0x3e length: 431 > 260 Bluetooth: hci3: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci3: Malformed LE Event: 0x0d UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list mmap: syz-executor.5 (5370): VmData 37388288 exceed data ulimit 0. Update limits or use boot option ignore_rlimit_data. audit: type=1400 audit(2000000000.644:27): avc: denied { block_suspend } for pid=5466 comm="syz-executor.4" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 sr 1:0:0:0: [sr0] tag#0 unaligned transfer loop1: detected capacity change from 0 to 512 EXT4-fs error (device loop1): __ext4_fill_super:5560: inode #2: comm syz-executor.1: iget: bad extra_isize 52386 (inode size 512) EXT4-fs (loop1): get root inode failed EXT4-fs (loop1): mount failed loop1: detected capacity change from 0 to 512 EXT4-fs error (device loop1): __ext4_fill_super:5560: inode #2: comm syz-executor.1: iget: bad extra_isize 52386 (inode size 512) EXT4-fs (loop1): get root inode failed EXT4-fs (loop1): mount failed loop1: detected capacity change from 0 to 512 EXT4-fs error (device loop1): __ext4_fill_super:5560: inode #2: comm syz-executor.1: iget: bad extra_isize 52386 (inode size 512) EXT4-fs (loop1): get root inode failed EXT4-fs (loop1): mount failed netlink: 'syz-executor.6': attribute type 13 has an invalid length. syz_tun: refused to change device tx_queue_len netlink: 'syz-executor.6': attribute type 13 has an invalid length. syz_tun: refused to change device tx_queue_len SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65535 sclass=netlink_route_socket pid=5588 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65535 sclass=netlink_route_socket pid=5588 comm=syz-executor.5 loop1: detected capacity change from 0 to 512 netlink: 'syz-executor.6': attribute type 13 has an invalid length. syz_tun: refused to change device tx_queue_len EXT4-fs error (device loop1): __ext4_fill_super:5560: inode #2: comm syz-executor.1: iget: bad extra_isize 52386 (inode size 512) EXT4-fs (loop1): get root inode failed EXT4-fs (loop1): mount failed netlink: 'syz-executor.6': attribute type 13 has an invalid length. syz_tun: refused to change device tx_queue_len SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65535 sclass=netlink_route_socket pid=5615 comm=syz-executor.5 loop1: detected capacity change from 0 to 512 EXT4-fs error (device loop1): __ext4_fill_super:5560: inode #2: comm syz-executor.1: iget: bad extra_isize 52386 (inode size 512) EXT4-fs (loop1): get root inode failed EXT4-fs (loop1): mount failed SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65535 sclass=netlink_route_socket pid=5627 comm=syz-executor.5 netlink: 'syz-executor.6': attribute type 13 has an invalid length. syz_tun: refused to change device tx_queue_len SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65535 sclass=netlink_route_socket pid=5639 comm=syz-executor.5 No source specified No source specified loop0: detected capacity change from 0 to 128 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.7'. SELinux: security_context_str_to_sid (root,errors=continue) failed with errno=-22 SELinux: security_context_str_to_sid (root,errors=continue) failed with errno=-22 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.7'. wlan0: mtu less than device minimum wlan0: mtu less than device minimum SELinux: security_context_str_to_sid (root,errors=continue) failed with errno=-22 SELinux: security_context_str_to_sid (root,errors=continue) failed with errno=-22