===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.3/4109 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.3/4109: #0: ffff88800f5c23f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888049e616f0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f5c6950 (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: 1 UID: 0 PID: 4109 Comm: syz-executor.3 Not tainted 6.19.0-rc5-next-20260114 #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 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc7c6d93427 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:00007ffe860418d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc7c6d93427 RDX: 00007ffe860419b7 RSI: 00007fc7c6dee019 RDI: 00007ffe860419a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe86041770 R10: 00007ffe86041627 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe860419a0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.3/4109 Modules linked in: CPU: 1 UID: 0 PID: 4109 Comm: syz-executor.3 Not tainted 6.19.0-rc5-next-20260114 #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 16 c0 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 24 74 03 e8 bc 5c 56 00 e9 RSP: 0018:ffff8880493cf9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888049693700 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff888049693afc RBP: ffff888049693700 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff888049693700 R13: 0000000000000001 R14: ffffffff85c0ecd0 R15: ffff888049e54f58 FS: 000055556b5cd400(0000) GS:ffff8880e5443000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc7c6e13543 CR3: 000000001d547000 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 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc7c6d93427 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:00007ffe860418d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc7c6d93427 RDX: 00007ffe860419b7 RSI: 00007fc7c6dee019 RDI: 00007ffe860419a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe86041770 R10: 00007ffe86041627 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe860419a0 irq event stamp: 179 hardirqs last enabled at (179): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (178): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (174): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (172): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- Bluetooth: hci3: unexpected subevent 0x0e length: 30 > 15 Bluetooth: hci3: Unable to find connection for dst 00:00:00:00:00:00 sid 0x00 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 40 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 32 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 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 02 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 8 prio class 2 Buffer I/O error on dev sr0, logical block 0, async page read Buffer I/O error on dev sr0, logical block 1, async page read UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list 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 40 00 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 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 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 40 00 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 sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer 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 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 loop4: detected capacity change from 0 to 6 FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed loop4: detected capacity change from 0 to 6 FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed loop4: detected capacity change from 0 to 6 FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed loop4: detected capacity change from 0 to 6 FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed audit: type=1400 audit(1768382403.075:10): avc: denied { watch_reads } for pid=4739 comm="syz-executor.0" path="/syzkaller-testdir236550048/syzkaller.ZplfG5/39/file0" dev="hugetlbfs" ino=8190 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:hugetlbfs_t:s0 tclass=dir permissive=1 __nla_validate_parse: 2 callbacks suppressed netlink: 20 bytes leftover after parsing attributes in process `syz-executor.7'. UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list SELinux: unrecognized netlink message: protocol=4 nlmsg_type=1012 sclass=netlink_tcpdiag_socket pid=4770 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=1012 sclass=netlink_tcpdiag_socket pid=4770 comm=syz-executor.1 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.7'. audit: type=1326 audit(1768382403.550:11): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4784 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f886f69db19 code=0x0 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.7'. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium netlink: 20 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.7'. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium audit: type=1326 audit(1768382404.385:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4784 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f886f69db19 code=0x0 program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO EXT4-fs warning (device sda): ext4_block_to_path:105: block 2147483647 > max in inode 16049 EXT4-fs warning (device sda): ext4_block_to_path:105: block 2147483647 > max in inode 16049