===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260115 #1 Not tainted ------------------------------------- syz-executor.4/4146 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.4/4146: #0: ffff88800f9b83f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88804b070d68 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f9bc950 (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: 4146 Comm: syz-executor.4 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: 0033:0x7f72b9807427 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:00007ffc16e2d418 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f72b9807427 RDX: 00007ffc16e2d4f7 RSI: 00007f72b9862019 RDI: 00007ffc16e2d4e0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc16e2d2b0 R10: 00007ffc16e2d167 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc16e2d4e0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.4/4146 Modules linked in: CPU: 1 UID: 0 PID: 4146 Comm: syz-executor.4 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:ffff88804f04f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801ab70000 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801ab703fc RBP: ffff88801ab70000 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801ab70000 R13: 0000000000000001 R14: ffffffff85c0eff0 R15: ffff88804b2d58e0 FS: 000055559532b400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd16fac7018 CR3: 0000000050302000 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: 0033:0x7f72b9807427 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:00007ffc16e2d418 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f72b9807427 RDX: 00007ffc16e2d4f7 RSI: 00007f72b9862019 RDI: 00007ffc16e2d4e0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc16e2d2b0 R10: 00007ffc16e2d167 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffc16e2d4e0 irq event stamp: 169 hardirqs last enabled at (169): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (168): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (164): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (162): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- msdos: Unknown parameter 'smackfstransmute' msdos: Unknown parameter 'smackfstransmute' msdos: Unknown parameter 'smackfstransmute' msdos: Unknown parameter 'smackfstransmute' msdos: Unknown parameter 'smackfstransmute' audit: type=1400 audit(1768465858.759:10): avc: denied { write } for pid=4399 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 audit: type=1400 audit(1768465858.840:11): avc: denied { block_suspend } for pid=4405 comm="syz-executor.3" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 audit: type=1326 audit(1768465860.164:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4580 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fb1a9cb2b19 code=0x7ffc0000 audit: type=1326 audit(1768465860.165:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4580 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=298 compat=0 ip=0x7fb1a9cb2b19 code=0x7ffc0000 audit: type=1326 audit(1768465860.190:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4580 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fb1a9cb2b19 code=0x7ffc0000 audit: type=1326 audit(1768465860.194:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4580 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fb1a9cb2b19 code=0x7ffc0000 sg_write: data in/out 3171656/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly audit: type=1326 audit(1768465860.194:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4580 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=123 compat=0 ip=0x7fb1a9cb2b19 code=0x7ffc0000 audit: type=1326 audit(1768465860.194:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4580 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fb1a9cb2b19 code=0x7ffc0000 sg_write: data in/out 3171656/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly audit: type=1326 audit(1768465860.194:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4580 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fb1a9cb2b19 code=0x7ffc0000 audit: type=1326 audit(1768465860.215:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4580 comm="syz-executor.2" exe="/syz-executor.2" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7fb1a9cb2b19 code=0x7ffc0000 sg_write: data in/out 3171656/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly sg_write: data in/out 3171656/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly sg_write: data in/out 3171656/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.0 not setting count and/or reply_len properly sg_write: data in/out 3171656/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.6 not setting count and/or reply_len properly sg_write: data in/out 3171656/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly sg_write: data in/out 3171656/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.0 not setting count and/or reply_len properly sg_write: data in/out 3171656/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.6 not setting count and/or reply_len properly loop3: detected capacity change from 0 to 10 loop3: detected capacity change from 0 to 10 sg_write: data in/out 3171656/4 bytes for SCSI command 0x0-- guessing data in; program syz-executor.6 not setting count and/or reply_len properly loop3: detected capacity change from 0 to 10 loop6: detected capacity change from 0 to 10 loop6: detected capacity change from 0 to 10 loop3: detected capacity change from 0 to 10 loop6: detected capacity change from 0 to 10 syz-executor.7 uses obsolete (PF_INET,SOCK_PACKET) sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2087 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2087 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 Buffer I/O error on dev sr0, logical block 0, lost async page write Buffer I/O error on dev sr0, logical block 1, lost async page write Buffer I/O error on dev sr0, logical block 2, lost async page write Buffer I/O error on dev sr0, logical block 3, lost async page write Buffer I/O error on dev sr0, logical block 4, lost async page write Buffer I/O error on dev sr0, logical block 5, lost async page write Buffer I/O error on dev sr0, logical block 6, lost async page write Buffer I/O error on dev sr0, logical block 7, lost async page write Buffer I/O error on dev sr0, logical block 8, lost async page write Buffer I/O error on dev sr0, logical block 9, lost async page write sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 127 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 254 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 381 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 508 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 635 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 762 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 889 op 0x1:(WRITE) flags 0x804800 phys_seg 127 prio class 2 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 : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 01 fc 00 00 0c 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 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 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 : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 01 fc 00 00 0c 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 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 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 : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 01 fc 00 00 0c 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 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