===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260115 #1 Not tainted ------------------------------------- syz-executor.4/5694 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.4/5694: #0: ffff88800f8783f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888036db16f0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f87c950 (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: 5694 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: 0033:0x7fe8fc6df427 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:00007fff241913f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe8fc6df427 RDX: ffffffffffffffbc RSI: 00007fe8fc73a00e RDI: 00007fe8fc7391dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff24190e70 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007fff241914c0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.4/5694 Modules linked in: CPU: 0 UID: 0 PID: 5694 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:ffff88801e78f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888048861b80 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888048861f7c RBP: ffff888048861b80 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888048861b80 R13: 0000000000000001 R14: ffffffff85c10580 R15: ffff8880372ef578 FS: 000055555e3f7400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d425000 CR3: 000000000ed32000 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: 0033:0x7fe8fc6df427 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:00007fff241913f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe8fc6df427 RDX: ffffffffffffffbc RSI: 00007fe8fc73a00e RDI: 00007fe8fc7391dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff24190e70 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007fff241914c0 irq event stamp: 747 hardirqs last enabled at (747): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (746): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (742): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (740): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- syz-executor.6 uses obsolete (PF_INET,SOCK_PACKET) audit: type=1326 audit(1768470383.126:50): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5713 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f209e6b7b19 code=0x0 Bluetooth: unknown link type 6 Bluetooth: hci5: connection err: -111 UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list Bluetooth: Unexpected continuation frame (len 16) Bluetooth: unknown link type 6 Bluetooth: hci5: connection err: -111 Bluetooth: Unexpected start frame (len 10) loop4: detected capacity change from 0 to 16383 loop4: detected capacity change from 0 to 1 Bluetooth: unknown link type 6 Bluetooth: hci5: connection err: -111 loop4: detected capacity change from 0 to 16383 Bluetooth: Unexpected start frame (len 10) loop4: detected capacity change from 0 to 1 Bluetooth: unknown link type 6 Bluetooth: hci5: connection err: -111 Bluetooth: Unexpected start frame (len 10) loop4: detected capacity change from 0 to 16383 loop4: detected capacity change from 0 to 1 9p: Unknown access argument 18446744073709551615: -34 9p: Unknown access argument 18446744073709551615: -34 Bluetooth: unknown link type 6 Bluetooth: hci5: connection err: -111 Bluetooth: Unexpected start frame (len 10) sr 1:0:0:0: [sr0] tag#0 unaligned transfer blk_print_req_error: 35 callbacks suppressed I/O error, dev sr0, sector 34 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 35 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 loop4: detected capacity change from 0 to 16383 loop4: detected capacity change from 0 to 1 loop4: detected capacity change from 0 to 16383 loop4: detected capacity change from 0 to 1 serio: Serial port ptm0 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 34 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 35 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 serio: Serial port ptm0 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 34 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 35 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 audit: type=1400 audit(1768470387.095:51): avc: denied { write } for pid=6053 comm="syz-executor.3" 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(1768470387.265:52): avc: denied { tracepoint } for pid=6041 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' Bluetooth: hci5: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci5: Injecting HCI hardware error event Bluetooth: hci5: hardware error 0x00 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. audit: type=1400 audit(1768470390.267:53): avc: denied { watch_reads } for pid=6226 comm="syz-executor.0" path="/syzkaller-testdir233517245/syzkaller.dF0M6j/51/file0" dev="tmpfs" ino=1 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=dir permissive=1 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.3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. Bluetooth: hci5: Opcode 0x0c03 failed: -110 loop0: detected capacity change from 0 to 6 FAT-fs (loop0): Directory bread(block 6) failed netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. loop0: detected capacity change from 0 to 6 FAT-fs (loop0): Directory bread(block 6) failed FAT-fs (loop0): Directory bread(block 6) failed FAT-fs (loop0): Directory bread(block 6) failed loop0: detected capacity change from 0 to 6 FAT-fs (loop0): Directory bread(block 6) failed FAT-fs (loop0): Directory bread(block 6) failed FAT-fs (loop0): Directory bread(block 6) failed program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO loop0: detected capacity change from 0 to 6 FAT-fs (loop0): Directory bread(block 6) failed FAT-fs (loop0): Directory bread(block 6) failed FAT-fs (loop0): Directory bread(block 6) failed tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' loop7: detected capacity change from 0 to 64 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop7: detected capacity change from 0 to 64 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop7: detected capacity change from 0 to 64 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)