===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.6/285 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.6/285: #0: ffff88800fa703f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801a5c5020 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fa74950 (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: 285 Comm: syz-executor.6 Not tainted 6.19.0-rc5-next-20260114 #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 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdb9c3fdc27 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:00007fff49439d68 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff49439df0 RCX: 00007fdb9c3fdc27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff49439df0 RBP: 00007fff49439dcc R08: 0000000000000000 R09: 0000000000000003 R10: 00007fff49439b07 R11: 0000000000000202 R12: 0000000000000032 R13: 00000000000181ae R14: 0000000000000001 R15: 00007fff49439e30 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.6/285 Modules linked in: CPU: 1 UID: 0 PID: 285 Comm: syz-executor.6 Not tainted 6.19.0-rc5-next-20260114 #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 16 c0 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 24 74 03 e8 bc 5c 56 00 e9 RSP: 0018:ffff88801b52f9e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801b365280 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff88801b36567c RBP: ffff88801b365280 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801b365280 R13: 0000000000000001 R14: ffffffff85c0e410 R15: ffff88800975cf58 FS: 000055556dad1400(0000) GS:ffff8880e5443000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556dadac58 CR3: 000000000d40d000 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 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdb9c3fdc27 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:00007fff49439d68 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff49439df0 RCX: 00007fdb9c3fdc27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff49439df0 RBP: 00007fff49439dcc R08: 0000000000000000 R09: 0000000000000003 R10: 00007fff49439b07 R11: 0000000000000202 R12: 0000000000000032 R13: 00000000000181ae R14: 0000000000000001 R15: 00007fff49439e30 irq event stamp: 158709 hardirqs last enabled at (158709): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (158708): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (158704): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (158702): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- No source specified No source specified netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 'syz-executor.3': attribute type 8 has an invalid length. netlink: 'syz-executor.3': attribute type 8 has an invalid length. netlink: 'syz-executor.3': attribute type 8 has an invalid length. netlink: 'syz-executor.3': attribute type 8 has an invalid length. netlink: 'syz-executor.3': attribute type 8 has an invalid length. loop7: detected capacity change from 0 to 512 EXT4-fs error (device loop7): __ext4_fill_super:5560: inode #2: comm syz-executor.7: casefold flag without casefold feature EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed loop7: detected capacity change from 0 to 512 EXT4-fs error (device loop7): __ext4_fill_super:5560: inode #2: comm syz-executor.7: casefold flag without casefold feature EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed loop7: detected capacity change from 0 to 512 EXT4-fs error (device loop7): __ext4_fill_super:5560: inode #2: comm syz-executor.7: casefold flag without casefold feature EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed loop7: detected capacity change from 0 to 512 EXT4-fs error (device loop7): __ext4_fill_super:5560: inode #2: comm syz-executor.7: casefold flag without casefold feature EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed loop7: detected capacity change from 0 to 512 EXT4-fs error (device loop7): __ext4_fill_super:5560: inode #2: comm syz-executor.7: casefold flag without casefold feature EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list 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 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 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 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 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 audit: type=1326 audit(1768378572.982:10): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4590 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fa8a3ed9b19 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 audit: type=1326 audit(1768378573.814:11): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4590 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fa8a3ed9b19 code=0x0 audit: type=1326 audit(1768378573.908:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4604 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fa8a3ed9b19 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 audit: type=1326 audit(1768378574.163:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4625 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fdb9c3feb19 code=0x0 loop3: detected capacity change from 0 to 64 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: unknown link type 30 Bluetooth: hci1: connection err: -111 Bluetooth: hci1: hardware error 0x08 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop4: detected capacity change from 0 to 16383 loop4: detected capacity change from 0 to 16383 Bluetooth: unknown link type 30 Bluetooth: hci5: connection err: -111 audit: type=1326 audit(1768378575.073:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4645 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fa8a3ed9b19 code=0x0 Bluetooth: hci5: hardware error 0x08 loop1: detected capacity change from 0 to 16383 loop3: detected capacity change from 0 to 64 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: unknown link type 30 Bluetooth: hci1: connection err: -111 audit: type=1326 audit(1768378575.127:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4652 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fdb9c3feb19 code=0x0 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: unknown link type 30 Bluetooth: hci2: connection err: -111 Bluetooth: hci2: hardware error 0x08 set_capacity_and_notify: 1 callbacks suppressed loop0: detected capacity change from 0 to 16383 Bluetooth: unknown link type 30 Bluetooth: hci1: connection err: -111 Bluetooth: unknown link type 30 Bluetooth: hci5: connection err: -111 loop1: detected capacity change from 0 to 16383 loop4: detected capacity change from 0 to 16383 loop3: detected capacity change from 0 to 64 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: unknown link type 30 Bluetooth: hci1: connection err: -111 Bluetooth: unknown link type 30 loop4: detected capacity change from 0 to 16383 Bluetooth: hci2: connection err: -111 Bluetooth: unknown link type 30 Bluetooth: hci5: connection err: -111 loop1: detected capacity change from 0 to 16383 loop0: detected capacity change from 0 to 16383 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop3: detected capacity change from 0 to 64 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)