===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260115 #1 Not tainted ------------------------------------- syz-executor.2/4469 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.2/4469: #0: ffff88800f9a83f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801f0c96f0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f9ac950 (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: 4469 Comm: syz-executor.2 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: 0033:0x7fec669c7427 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:00007ffd449cbdf8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fec669c7427 RDX: 00007ffd449cbed3 RSI: 00007fec66a2202f RDI: 00007ffd449cbec0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd449cbc90 R10: 00007ffd449cbb47 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd449cbec0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.2/4469 Modules linked in: CPU: 0 UID: 0 PID: 4469 Comm: syz-executor.2 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:ffff8880496879a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801b085280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801b08567c RBP: ffff88801b085280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801b085280 R13: 0000000000000001 R14: ffffffff85c10a80 R15: ffff88801b954f58 FS: 0000555591efa400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc98aaa8018 CR3: 000000001b528000 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: 0033:0x7fec669c7427 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:00007ffd449cbdf8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fec669c7427 RDX: 00007ffd449cbed3 RSI: 00007fec66a2202f RDI: 00007ffd449cbec0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd449cbc90 R10: 00007ffd449cbb47 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd449cbec0 irq event stamp: 439 hardirqs last enabled at (439): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (438): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (434): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (432): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- audit: type=1326 audit(1768565366.526:39): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4464 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f72826a6b19 code=0x0 audit: type=1326 audit(1768565366.530:40): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4460 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f0088537b19 code=0x0 audit: type=1326 audit(1768565366.533:41): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4458 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fc515aa8b19 code=0x0 audit: type=1326 audit(1768565366.537:42): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4465 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f67d6e01b19 code=0x0 audit: type=1326 audit(1768565366.585:43): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4458 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fc515aa8b19 code=0x0 audit: type=1326 audit(1768565366.598:44): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4478 comm="syz-executor.4" exe="/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f90e6bbdb19 code=0x0 audit: type=1326 audit(1768565366.633:45): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4460 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f0088537b19 code=0x0 audit: type=1326 audit(1768565366.709:46): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4478 comm="syz-executor.4" exe="/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f90e6bbdb19 code=0x0 loop2: detected capacity change from 0 to 64 vfat: Unknown parameter '%ÙòƒßÀ$Œ£Æ' audit: type=1326 audit(1768565366.741:47): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4460 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f0088537b19 code=0x0 loop2: detected capacity change from 0 to 64 vfat: Unknown parameter '%ÙòƒßÀ$Œ£Æ' audit: type=1326 audit(1768565366.810:48): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4478 comm="syz-executor.4" exe="/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f90e6bbdb19 code=0x0 sg_write: data in/out 92/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.1 not setting count and/or reply_len properly sg_write: data in/out 92/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.1 not setting count and/or reply_len properly sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 CDB: Service action bidirectional, sa=0x1b 9d 1b fa 35 60 6d 11 77 38 a7 0f b2 94 0a 54 59 kauditd_printk_skb: 6 callbacks suppressed audit: type=1326 audit(1768565375.314:55): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4536 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fd221801b19 code=0x0 loop5: detected capacity change from 0 to 16368 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.7'. program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO ieee80211 phy18: Selected rate control algorithm 'minstrel_ht' audit: type=1326 audit(1768565375.339:56): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4543 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fec669c7b19 code=0x0 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 CDB: Service action bidirectional, sa=0x1b 9d 1b fa 35 60 6d 11 77 38 a7 0f b2 94 0a 54 59 program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1326 audit(1768565375.463:57): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4553 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fec669c7b19 code=0x0 audit: type=1326 audit(1768565375.472:58): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4551 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fc515aa8b19 code=0x0 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.7'. ieee80211 phy19: Selected rate control algorithm 'minstrel_ht' sg_write: data in/out 92/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.1 not setting count and/or reply_len properly loop3: detected capacity change from 0 to 240 iso9660: Unknown parameter 'ma' loop5: detected capacity change from 0 to 16368 sg_write: data in/out 92/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.1 not setting count and/or reply_len properly sg_write: data in/out 92/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.2 not setting count and/or reply_len properly sg_write: data in/out 92/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.1 not setting count and/or reply_len properly loop2: detected capacity change from 0 to 64 FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1326 audit(1768565376.292:59): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4551 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fc515aa8b19 code=0x0 loop3: detected capacity change from 0 to 240 iso9660: Unknown parameter 'ma'