===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.5/4137 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.5/4137: #0: ffff88800fcbc3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801c3aaa00 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f8b0950 (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: 4137 Comm: syz-executor.5 Not tainted 6.19.0-rc5-next-20260116 #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: 0033:0x7f1bfb42d427 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:00007ffdac155578 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1bfb42d427 RDX: 00007ffdac155657 RSI: 00007f1bfb488019 RDI: 00007ffdac155640 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffdac155410 R10: 00007ffdac1552c7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffdac155640 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.5/4137 Modules linked in: CPU: 0 UID: 0 PID: 4137 Comm: syz-executor.5 Not tainted 6.19.0-rc5-next-20260116 #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:ffff88804bf7f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801b82d280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801b82d67c RBP: ffff88801b82d280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801b82d280 R13: 0000000000000001 R14: ffffffff85c0edc0 R15: ffff88804b403c48 FS: 00005555793a5400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1bfb4ad545 CR3: 000000000e453000 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+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: 0033:0x7f1bfb42d427 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:00007ffdac155578 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1bfb42d427 RDX: 00007ffdac155657 RSI: 00007f1bfb488019 RDI: 00007ffdac155640 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffdac155410 R10: 00007ffdac1552c7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffdac155640 irq event stamp: 165 hardirqs last enabled at (165): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (164): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (160): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (158): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. audit: type=1400 audit(1768576384.709:11): avc: denied { relabelto } for pid=4184 comm="syz-executor.2" name="cgroup.procs" dev="cgroup2" ino=2018 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:clock_device_t:s0 tclass=file permissive=1 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. loop3: detected capacity change from 0 to 344 audit: type=1400 audit(1768576384.710:12): avc: denied { associate } for pid=4184 comm="syz-executor.2" name="cgroup.procs" dev="cgroup2" ino=2018 scontext=system_u:object_r:clock_device_t:s0 tcontext=system_u:object_r:cgroup_t:s0 tclass=filesystem permissive=1 loop1: detected capacity change from 0 to 64 FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop1: detected capacity change from 0 to 64 FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) vfat: Bad value for 'utf8' vfat: Bad value for 'utf8' FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop1: detected capacity change from 0 to 64 FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop2: detected capacity change from 0 to 16383 loop2: detected capacity change from 0 to 16383 loop1: detected capacity change from 0 to 64 FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1326 audit(1768576385.456:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4292 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f1bfb42db19 code=0x7ffc0000 audit: type=1326 audit(1768576385.457:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4292 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=186 compat=0 ip=0x7f1bfb42db19 code=0x7ffc0000 audit: type=1326 audit(1768576385.457:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4292 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f1bfb42db19 code=0x7ffc0000 audit: type=1326 audit(1768576385.458:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4292 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=129 compat=0 ip=0x7f1bfb42db19 code=0x7ffc0000 audit: type=1326 audit(1768576385.458:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4292 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f1bfb42db19 code=0x7ffc0000 audit: type=1326 audit(1768576385.458:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4292 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7f1bfb42db19 code=0x7ffc0000 audit: type=1326 audit(1768576385.458:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4292 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f1bfb42db19 code=0x7ffc0000 audit: type=1326 audit(1768576385.459:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4292 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=186 compat=0 ip=0x7f1bfb42db19 code=0x7ffc0000 loop1: detected capacity change from 0 to 512 loop2: detected capacity change from 0 to 4096 EXT4-fs error (device loop1): ext4_orphan_get:1417: comm syz-executor.1: bad orphan inode 149 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 64 FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. ieee80211 phy18: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. ieee80211 phy19: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. ieee80211 phy20: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. ieee80211 phy21: Selected rate control algorithm 'minstrel_ht' serio: Serial port ptm0 tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' serio: Serial port ptm0 serio: Serial port ptm1 tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' serio: Serial port ptm0 serio: Serial port ptm1 9p: Bad value for 'rfdno' 9p: Bad value for 'rfdno' tmpfs: Bad value for 'mpol' serio: Serial port ptm0 serio: Serial port ptm1 ieee802154 phy0 wpan0: encryption failed: -22 syz-executor.1 uses obsolete (PF_INET,SOCK_PACKET) set_capacity_and_notify: 1 callbacks suppressed loop4: detected capacity change from 0 to 224106 loop5: detected capacity change from 0 to 224106 kauditd_printk_skb: 23 callbacks suppressed audit: type=1326 audit(1768576389.862:44): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4757 comm="syz-executor.3" exe="/syz-executor.3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fe7826e5b19 code=0x7ffc0000 audit: type=1326 audit(1768576389.862:45): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4757 comm="syz-executor.3" exe="/syz-executor.3" sig=0 arch=c000003e syscall=158 compat=0 ip=0x7fe7826e5b19 code=0x7ffc0000 audit: type=1326 audit(1768576389.862:46): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4757 comm="syz-executor.3" exe="/syz-executor.3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fe7826e5b19 code=0x7ffc0000 audit: type=1326 audit(1768576389.862:47): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4757 comm="syz-executor.3" exe="/syz-executor.3" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7fe7826e5b19 code=0x7ffc0000 audit: type=1326 audit(1768576389.882:48): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4757 comm="syz-executor.3" exe="/syz-executor.3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fe7826e5b19 code=0x7ffc0000 loop5: detected capacity change from 0 to 224106 loop4: detected capacity change from 0 to 224106 loop4: detected capacity change from 0 to 224106 loop5: detected capacity change from 0 to 224106 loop4: detected capacity change from 0 to 2048 EXT4-fs warning (device loop4): read_mmp_block:110: Error -117 while reading MMP block 0 loop4: detected capacity change from 0 to 2048 EXT4-fs warning (device loop4): read_mmp_block:110: Error -117 while reading MMP block 0 loop4: detected capacity change from 0 to 2048 EXT4-fs warning (device loop4): read_mmp_block:110: Error -117 while reading MMP block 0 loop4: detected capacity change from 0 to 2048 EXT4-fs warning (device loop4): read_mmp_block:110: Error -117 while reading MMP block 0 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) EXT4-fs warning (device loop4): read_mmp_block:110: Error -117 while reading MMP block 0 program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO Bluetooth: Frame is too long (len 18, expected len 4) Bluetooth: Frame is too long (len 18, expected len 4) program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO random: crng reseeded on system resumption program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO ieee802154 phy0 wpan0: encryption failed: -22 EXT4-fs error (device loop1): ext4_quota_enable:7184: inode #3: comm syz-executor.1: iget: special inode unallocated EXT4-fs error (device loop1): ext4_quota_enable:7186: comm syz-executor.1: Bad quota inode: 3, type: 0 EXT4-fs warning (device loop1): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=3). Please run e2fsck to fix. EXT4-fs (loop1): mount failed EXT4-fs error (device loop1): ext4_quota_enable:7184: inode #3: comm syz-executor.1: iget: special inode unallocated EXT4-fs error (device loop1): ext4_quota_enable:7186: comm syz-executor.1: Bad quota inode: 3, type: 0 EXT4-fs warning (device loop1): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=3). Please run e2fsck to fix. EXT4-fs (loop1): mount failed syz-executor.0 (5002) used greatest stack depth: 23984 bytes left EXT4-fs error (device loop1): ext4_quota_enable:7184: inode #3: comm syz-executor.1: iget: special inode unallocated EXT4-fs error (device loop1): ext4_quota_enable:7186: comm syz-executor.1: Bad quota inode: 3, type: 0 EXT4-fs warning (device loop1): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=3). Please run e2fsck to fix. EXT4-fs (loop1): mount failed EXT4-fs error (device loop1): ext4_quota_enable:7184: inode #3: comm syz-executor.1: iget: special inode unallocated EXT4-fs error (device loop1): ext4_quota_enable:7186: comm syz-executor.1: Bad quota inode: 3, type: 0 EXT4-fs warning (device loop1): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=3). Please run e2fsck to fix. EXT4-fs (loop1): mount failed EXT4-fs error (device loop1): ext4_quota_enable:7184: inode #3: comm syz-executor.1: iget: special inode unallocated EXT4-fs error (device loop1): ext4_quota_enable:7186: comm syz-executor.1: Bad quota inode: 3, type: 0 EXT4-fs warning (device loop1): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=3). Please run e2fsck to fix. EXT4-fs (loop1): mount failed netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. audit: type=1400 audit(1768576394.231:49): avc: denied { module_load } for pid=5190 comm="syz-executor.7" path="/syz-executor.7" dev="sda" ino=15934 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=system permissive=1 Invalid ELF header type: 3 != 1