===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260115 #1 Not tainted ------------------------------------- syz-executor.7/4033 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.7/4033: #0: ffff88800f6583f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888049db3388 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f65c950 (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: 4033 Comm: syz-executor.7 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_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6db1b71c27 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 53 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:00007f6daf0e7fa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f6db1b71c27 RDX: 0000000000000003 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f6daf0e8040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f6daf0e8000 R15: 0000000020013800 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.7/4033 Modules linked in: CPU: 1 UID: 0 PID: 4033 Comm: syz-executor.7 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:ffff88804a82f9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff8880480b8000 RCX: ffffc90007035000 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff8880480b83fc RBP: ffff8880480b8000 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880480b8000 R13: 0000000000000001 R14: ffffffff85c0d9c0 R15: ffff888049db3c48 FS: 00007f6daf0e8700(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbb0d501004 CR3: 0000000048b07000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6db1b71c27 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 53 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:00007f6daf0e7fa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f6db1b71c27 RDX: 0000000000000003 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f6daf0e8040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f6daf0e8000 R15: 0000000020013800 irq event stamp: 643 hardirqs last enabled at (643): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (642): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (638): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (636): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- No source specified No source specified EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir445036119/syzkaller.4JhZ9W/6/file0 supports timestamps until 2038-01-19 (0x7fffffff) pci 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=none,decodes=none:owns=io+mem EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000. pci 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=none,decodes=none:owns=io+mem loop7: detected capacity change from 0 to 512 EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir445036119/syzkaller.4JhZ9W/7/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000. pci 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=none,decodes=none:owns=io+mem 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 Buffer I/O error on dev sr0, logical block 4, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer Buffer I/O error on dev sr0, logical block 5, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer Buffer I/O error on dev sr0, logical block 6, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer Buffer I/O error on dev sr0, logical block 7, async page read netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO Bluetooth: hci0: command tx timeout program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1400 audit(1768469338.259:14): avc: denied { write } for pid=4339 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 random: crng reseeded on system resumption random: crng reseeded on system resumption audit: type=1326 audit(1768469338.464:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4367 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7f636feb19 code=0x0 syz-executor.4 (4340) used greatest stack depth: 23408 bytes left audit: type=1326 audit(1768469339.287:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4367 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7f636feb19 code=0x0 program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1326 audit(1768469339.509:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4381 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7f636feb19 code=0x0 audit: type=1326 audit(1768469340.411:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4422 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7f636feb19 code=0x0 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. audit: type=1326 audit(1768469341.285:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4453 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7f636feb19 code=0x0 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. audit: type=1400 audit(1768469341.406:20): avc: denied { read } for pid=4464 comm="syz-executor.6" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 'syz-executor.1': attribute type 6 has an invalid length. EXT4-fs: Invalid want_extra_isize 0 EXT4-fs: Invalid want_extra_isize 0 loop7: detected capacity change from 0 to 184 loop7: detected capacity change from 0 to 184 loop0: detected capacity change from 0 to 4096 EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.