===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.5/284 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.5/284: #0: ffff88800f6a63f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880097fc698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f6aa950 (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: 284 Comm: syz-executor.5 Not tainted 6.19.0-rc5-next-20260116 #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: 0033:0x7fcde0c75c27 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:00007fffdcfcd828 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fffdcfcd8b0 RCX: 00007fcde0c75c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fffdcfcd8b0 RBP: 00007fffdcfcd88c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fffdcfcd5c6 R11: 0000000000000206 R12: 0000000000000032 R13: 0000000000022a43 R14: 0000000000000003 R15: 00007fffdcfcd8f0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.5/284 Modules linked in: CPU: 1 UID: 0 PID: 284 Comm: syz-executor.5 Not tainted 6.19.0-rc5-next-20260116 #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:ffff8880178b79e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888016c23700 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff888016c23afc RBP: ffff888016c23700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888016c23700 R13: 0000000000000001 R14: ffffffff85c0d7e0 R15: ffff888020803c48 FS: 000055558a00a400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffdcfcbfe8 CR3: 000000000e710000 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: 0033:0x7fcde0c75c27 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:00007fffdcfcd828 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fffdcfcd8b0 RCX: 00007fcde0c75c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fffdcfcd8b0 RBP: 00007fffdcfcd88c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fffdcfcd5c6 R11: 0000000000000206 R12: 0000000000000032 R13: 0000000000022a43 R14: 0000000000000003 R15: 00007fffdcfcd8f0 irq event stamp: 377695 hardirqs last enabled at (377695): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (377694): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (377688): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (377686): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- Bluetooth: hci2: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci2: Injecting HCI hardware error event Bluetooth: hci2: hardware error 0x00 Bluetooth: hci4: Opcode 0x0c03 failed: -110 Bluetooth: hci5: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci5: Injecting HCI hardware error event Bluetooth: hci5: hardware error 0x00 Bluetooth: hci0: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci0: Injecting HCI hardware error event Bluetooth: hci0: hardware error 0x00 loop1: detected capacity change from 0 to 592 Bluetooth: hci6: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci6: Injecting HCI hardware error event Bluetooth: hci6: hardware error 0x00 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'. Bluetooth: hci2: Opcode 0x0c03 failed: -110 Bluetooth: hci5: Opcode 0x0c03 failed: -110 Bluetooth: hci0: Opcode 0x0c03 failed: -110 netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list Bluetooth: hci6: Opcode 0x0c03 failed: -110 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Opcode 0x0406 failed: -4 Bluetooth: hci1: Opcode 0x0406 failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0406 failed: -4 Bluetooth: hci3: Opcode 0x0406 failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0406 failed: -4 Bluetooth: hci7: Opcode 0x0406 failed: -4 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 loop1: detected capacity change from 0 to 4096 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 4096 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 4096 tmpfs: Bad value for 'mpol' EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 4096 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. tmpfs: Bad value for 'mpol' EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. syz-executor.0 (5367): /proc/5365/oom_adj is deprecated, please use /proc/5365/oom_score_adj instead. tmpfs: Bad value for 'mpol' A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. Bluetooth: hci7: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout perf: interrupt took too long (2526 > 2500), lowering kernel.perf_event_max_sample_rate to 79000 perf: interrupt took too long (5054 > 5022), lowering kernel.perf_event_max_sample_rate to 39000 perf: interrupt took too long (6331 > 6317), lowering kernel.perf_event_max_sample_rate to 31000 loop5: detected capacity change from 0 to 270 perf: interrupt took too long (7951 > 7913), lowering kernel.perf_event_max_sample_rate to 25000 perf: interrupt took too long (9961 > 9938), lowering kernel.perf_event_max_sample_rate to 20000 perf: interrupt took too long (12456 > 12451), lowering kernel.perf_event_max_sample_rate to 16000 loop5: detected capacity change from 0 to 270 loop4: detected capacity change from 0 to 270 loop5: detected capacity change from 0 to 270 loop4: detected capacity change from 0 to 270 loop5: detected capacity change from 0 to 270 __nla_validate_parse: 12 callbacks suppressed netlink: 12 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.6'. syz-executor.3 uses obsolete (PF_INET,SOCK_PACKET) Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout Invalid ELF header magic: != ELF Invalid ELF header magic: != ELF Invalid ELF header magic: != ELF Invalid ELF header magic: != ELF netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. ieee80211 phy18: Selected rate control algorithm 'minstrel_ht' EXT4-fs error (device loop7): __ext4_fill_super:5560: inode #2: comm syz-executor.7: iget: special inode unallocated EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed EXT4-fs error (device loop7): __ext4_fill_super:5560: inode #2: comm syz-executor.7: iget: special inode unallocated EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed Invalid ELF header magic: != ELF ieee80211 phy19: Selected rate control algorithm 'minstrel_ht' EXT4-fs error (device loop7): __ext4_fill_super:5560: inode #2: comm syz-executor.7: iget: special inode unallocated EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed EXT4-fs error (device loop7): __ext4_fill_super:5560: inode #2: comm syz-executor.7: iget: special inode unallocated EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed EXT4-fs error (device loop7): __ext4_fill_super:5560: inode #2: comm syz-executor.7: iget: special inode unallocated EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed 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: Test Unit Ready sr 1:0:0:0: [sr0] tag#0 CDB[00]: 00 b5 e8 63 84 61 27 04 8f 4f f5 ce 00 63 0e a5 sr 1:0:0:0: [sr0] tag#0 CDB[10]: ed