===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.4/4192 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.4/4192: #0: ffff88800f6b03f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880491ed020 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f6b4950 (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: 4192 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260113 #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+0x406/0xb40 vfs_symlink+0x44b/0x840 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa3d4271427 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:00007ffd7b87d518 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa3d4271427 RDX: ffffffffffffffbc RSI: 00007fa3d42cc00e RDI: 00007fa3d42cb1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd7b87cf90 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd7b87d5e0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.4/4192 Modules linked in: CPU: 0 UID: 0 PID: 4192 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260113 #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 a6 bb de ff 4d 85 f6 0f 84 73 fe ff ff e8 38 89 20 00 fb e9 68 fe ff ff 90 <0f> 0b 90 5b 5d 41 5c 41 5d 41 5e e9 61 f9 73 03 e8 0c 88 56 00 e9 RSP: 0018:ffff8880499179a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888020a59b80 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff888020a59f7c RBP: ffff888020a59b80 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888020a59b80 R13: 0000000000000001 R14: ffffffff85c0c750 R15: ffff888049050ca0 FS: 0000555566d2a400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffe9f07030 CR3: 000000001dd85000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x406/0xb40 vfs_symlink+0x44b/0x840 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa3d4271427 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:00007ffd7b87d518 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa3d4271427 RDX: ffffffffffffffbc RSI: 00007fa3d42cc00e RDI: 00007fa3d42cb1dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd7b87cf90 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd7b87d5e0 irq event stamp: 699 hardirqs last enabled at (699): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (697): [] handle_softirqs+0x65e/0x7d0 softirqs last enabled at (698): [] __irq_exit_rcu+0xc4/0x100 softirqs last disabled at (693): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- netlink: 112 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 112 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 112 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 112 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 112 bytes leftover after parsing attributes in process `syz-executor.2'. audit: type=1326 audit(1768295552.155:10): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4327 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fe38309cb19 code=0x7ffc0000 audit: type=1326 audit(1768295552.157:11): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4327 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=186 compat=0 ip=0x7fe38309cb19 code=0x7ffc0000 audit: type=1326 audit(1768295552.158:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4327 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fe38309cb19 code=0x7ffc0000 audit: type=1326 audit(1768295552.158:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4327 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=129 compat=0 ip=0x7fe38309cb19 code=0x7ffc0000 audit: type=1326 audit(1768295552.158:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4327 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fe38309cb19 code=0x7ffc0000 audit: type=1326 audit(1768295552.158:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4327 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=317 compat=0 ip=0x7fe38309cb19 code=0x7ffc0000 audit: type=1326 audit(1768295552.164:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4327 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fe38309cb19 code=0x7ffc0000 audit: type=1326 audit(1768295552.164:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4327 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=186 compat=0 ip=0x7fe38309cb19 code=0x7ffc0000 audit: type=1326 audit(1768295552.165:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4327 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fe38309cb19 code=0x7ffc0000 audit: type=1326 audit(1768295552.341:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4342 comm="syz-executor.6" exe="/syz-executor.6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fe38309cb19 code=0x7ffc0000 EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 64 (only 16 groups) EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 64 (only 16 groups) EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 64 (only 16 groups) Bluetooth: hci6: command tx timeout EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 64 (only 16 groups) SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4426 comm=syz-executor.7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4426 comm=syz-executor.7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4436 comm=syz-executor.7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4447 comm=syz-executor.7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4454 comm=syz-executor.7 No source specified No source specified netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' Bluetooth: hci6: command tx timeout tmpfs: Bad value for 'mpol' __nla_validate_parse: 1 callbacks suppressed netlink: 8 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.7'. sg_write: data in/out 235/12 bytes for SCSI command 0x1f-- guessing data in; program syz-executor.5 not setting count and/or reply_len properly sg_write: data in/out 235/12 bytes for SCSI command 0x1f-- guessing data in; program syz-executor.5 not setting count and/or reply_len properly sg_write: data in/out 235/12 bytes for SCSI command 0x1f-- guessing data in; program syz-executor.5 not setting count and/or reply_len properly sg_write: data in/out 235/12 bytes for SCSI command 0x1f-- guessing data in; program syz-executor.5 not setting count and/or reply_len properly sg_write: data in/out 235/12 bytes for SCSI command 0x1f-- guessing data in; program syz-executor.5 not setting count and/or reply_len properly kernel read not supported for file /rfkill (pid: 11 comm: kworker/0:1) serio: Serial port ptm0 kernel read not supported for file /rfkill (pid: 11 comm: kworker/0:1) serio: Serial port ptm0 kernel read not supported for file /rfkill (pid: 11 comm: kworker/0:1) serio: Serial port ptm0 kernel read not supported for file /rfkill (pid: 11 comm: kworker/0:1) serio: Serial port ptm0 tmpfs: Unknown parameter './file0/file0' perf: interrupt took too long (4091 > 4035), lowering kernel.perf_event_max_sample_rate to 48000 perf: interrupt took too long (5143 > 5113), lowering kernel.perf_event_max_sample_rate to 38000 perf: interrupt took too long (6442 > 6428), lowering kernel.perf_event_max_sample_rate to 31000 perf: interrupt took too long (8095 > 8052), lowering kernel.perf_event_max_sample_rate to 24000 perf: interrupt took too long (10135 > 10118), lowering kernel.perf_event_max_sample_rate to 19000 perf: interrupt took too long (12670 > 12668), lowering kernel.perf_event_max_sample_rate to 15000