===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.3/4051 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.3/4051: #0: ffff88800f7663f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801ad6bd10 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f8c2950 (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: 4051 Comm: syz-executor.3 Not tainted 6.19.0-rc5-next-20260113 #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+0x406/0xb40 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: 0033:0x7f95e33fa427 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:00007ffe75fa49f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f95e33fa427 RDX: ffffffffffffffbc RSI: 00007f95e345500e RDI: 00007f95e34541dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe75fa4470 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe75fa4ac0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.3/4051 Modules linked in: CPU: 0 UID: 0 PID: 4051 Comm: syz-executor.3 Not tainted 6.19.0-rc5-next-20260113 #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 a6 bb de ff 4d 85 f6 0f 84 73 fe ff ff e8 38 89 20 00 fb e9 68 fe ff ff 90 <0f> 0b 90 5b 5d 41 5c 41 5d 41 5e e9 61 f9 73 03 e8 0c 88 56 00 e9 RSP: 0018:ffff88804a1179a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff8880200db700 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff8880200dbafc RBP: ffff8880200db700 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880200db700 R13: 0000000000000001 R14: ffffffff85c0d0b0 R15: ffff888049d76bf0 FS: 000055558a111400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe75fa3e98 CR3: 000000000d39e000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x406/0xb40 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: 0033:0x7f95e33fa427 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:00007ffe75fa49f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f95e33fa427 RDX: ffffffffffffffbc RSI: 00007f95e345500e RDI: 00007f95e34541dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe75fa4470 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe75fa4ac0 irq event stamp: 739 hardirqs last enabled at (739): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (738): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (734): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (732): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- audit: type=1326 audit(1768298574.910:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4031 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fc9854a2b19 code=0x0 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 loop2: detected capacity change from 0 to 512 loop0: detected capacity change from 0 to 64 FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1326 audit(1768298578.755:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4294 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f669af3ab19 code=0x0 program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1326 audit(1768298578.802:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4294 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f669af3ab19 code=0x0 program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1326 audit(1768298578.957:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4315 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f669af3ab19 code=0x0 audit: type=1326 audit(1768298578.960:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4315 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f669af3ab19 code=0x0 audit: type=1326 audit(1768298579.030:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4330 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f669af3ab19 code=0x0 UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list audit: type=1326 audit(1768298579.078:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4330 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f669af3ab19 code=0x0 audit: type=1326 audit(1768298579.254:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4361 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f669af3ab19 code=0x0 audit: type=1326 audit(1768298579.273:22): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4361 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f669af3ab19 code=0x0 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 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=98 sclass=netlink_route_socket pid=4412 comm=syz-executor.2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=98 sclass=netlink_route_socket pid=4432 comm=syz-executor.2 mac80211_hwsim hwsim3 wlan1: entered promiscuous mode mac80211_hwsim hwsim3 wlan1: left promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=98 sclass=netlink_route_socket pid=4443 comm=syz-executor.2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=98 sclass=netlink_route_socket pid=4453 comm=syz-executor.2 program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO EXT4-fs: Invalid want_extra_isize 9 EXT4-fs: Invalid want_extra_isize 9 loop0: detected capacity change from 0 to 118 UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list loop0: detected capacity change from 0 to 118 loop6: detected capacity change from 0 to 118 loop6: detected capacity change from 0 to 118 loop0: detected capacity change from 0 to 118 loop0: detected capacity change from 0 to 118 loop6: detected capacity change from 0 to 118 loop5: detected capacity change from 0 to 512 EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs error (device loop5): __ext4_new_inode:1072: comm syz-executor.5: reserved inode found cleared - inode=1 EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs error (device loop5): __ext4_new_inode:1072: comm syz-executor.5: reserved inode found cleared - inode=1 EXT4-fs error (device loop0): __ext4_new_inode:1072: comm syz-executor.0: reserved inode found cleared - inode=1 EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs error (device loop0): __ext4_new_inode:1072: comm syz-executor.0: reserved inode found cleared - inode=1 EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs error (device loop5): __ext4_new_inode:1072: comm syz-executor.5: reserved inode found cleared - inode=1 EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs error (device loop0): __ext4_new_inode:1072: comm syz-executor.0: reserved inode found cleared - inode=1 EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs error (device loop5): __ext4_new_inode:1072: comm syz-executor.5: reserved inode found cleared - inode=1 EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. audit: type=1400 audit(1768298582.327:23): avc: denied { block_suspend } for pid=4791 comm="syz-executor.2" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 Bluetooth: hci0: unexpected event 0x3e length: 431 > 260 Bluetooth: hci0: unexpected subevent 0x0d length: 430 > 260 Bluetooth: hci0: adv larger than maximum supported Bluetooth: hci0: adv larger than maximum supported Bluetooth: hci0: adv larger than maximum supported ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= audit: type=1326 audit(1768298582.574:24): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4829 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7faf93a70b19 code=0x0 EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. audit: type=1326 audit(1768298583.402:25): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4829 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7faf93a70b19 code=0x0 EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. set_capacity_and_notify: 6 callbacks suppressed loop4: detected capacity change from 0 to 16 EXT4-fs (loop4): couldn't mount as ext2 due to feature incompatibilities EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. loop4: detected capacity change from 0 to 16 EXT4-fs (loop4): couldn't mount as ext2 due to feature incompatibilities loop4: detected capacity change from 0 to 16 EXT4-fs (loop4): couldn't mount as ext2 due to feature incompatibilities