===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.5/4160 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.5/4160: #0: ffff88800faf43f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88800fc3f640 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fad0950 (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: 4160 Comm: syz-executor.5 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: 0033:0x7f9d8bd35427 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:00007fff7e18b8d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9d8bd35427 RDX: 00007fff7e18b9b7 RSI: 00007f9d8bd90019 RDI: 00007fff7e18b9a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff7e18b770 R10: 00007fff7e18b627 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fff7e18b9a0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.5/4160 Modules linked in: CPU: 0 UID: 0 PID: 4160 Comm: syz-executor.5 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:ffff88804eeff9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff8880497f5280 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff8880497f567c RBP: ffff8880497f5280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880497f5280 R13: 0000000000000001 R14: ffffffff85c0c200 R15: ffff88800fc3b2c0 FS: 000055555603b400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9d8bd90019 CR3: 0000000009c71000 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: 0033:0x7f9d8bd35427 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:00007fff7e18b8d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9d8bd35427 RDX: 00007fff7e18b9b7 RSI: 00007f9d8bd90019 RDI: 00007fff7e18b9a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff7e18b770 R10: 00007fff7e18b627 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fff7e18b9a0 irq event stamp: 173 hardirqs last enabled at (173): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (172): [] sysvec_call_function_single+0x18/0xc0 softirqs last enabled at (166): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (164): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- audit: type=1400 audit(1768297795.925:12): avc: denied { watch_reads } for pid=4167 comm="syz-executor.6" path="/syzkaller-testdir422638363/syzkaller.GqaG7f/12/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: 4 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. loop4: detected capacity change from 0 to 4 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. EXT4-fs (loop4): Can't support bigalloc feature without extents feature loop4: detected capacity change from 0 to 4 EXT4-fs (loop4): Can't support bigalloc feature without extents feature netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. blktrace: Concurrent blktraces are not allowed on sg0 blktrace: Concurrent blktraces are not allowed on sg0 blktrace: Concurrent blktraces are not allowed on sg0 blktrace: Concurrent blktraces are not allowed on sg0 blktrace: Concurrent blktraces are not allowed on sg0 blktrace: Concurrent blktraces are not allowed on sg0 blktrace: Concurrent blktraces are not allowed on sg0 audit: type=1400 audit(1768297798.014:13): avc: denied { relabelto } for pid=4489 comm="syz-executor.6" name="file0" dev="sda" ino=16016 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:zero_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768297798.019:14): avc: denied { read } for pid=4489 comm="syz-executor.6" name="file0" dev="sda" ino=16016 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:zero_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768297798.024:15): avc: denied { open } for pid=4489 comm="syz-executor.6" path="/syzkaller-testdir422638363/syzkaller.GqaG7f/29/file0" dev="sda" ino=16016 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:zero_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768297798.027:16): avc: denied { add_name search } for pid=4489 comm="syz-executor.6" name="file0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:zero_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768297798.027:17): avc: denied { create } for pid=4489 comm="syz-executor.6" name="file0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:zero_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768297798.087:18): avc: denied { relabelfrom } for pid=4489 comm="syz-executor.6" name="file0" dev="sda" ino=16016 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:zero_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768297798.087:19): avc: denied { read } for pid=4489 comm="syz-executor.6" name="file0" dev="sda" ino=16016 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:zero_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768297798.134:20): avc: denied { getattr } for pid=282 comm="syz-executor.6" path="/syzkaller-testdir422638363/syzkaller.GqaG7f/29/file0" dev="sda" ino=16016 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:zero_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768297798.137:21): avc: denied { remove_name } for pid=282 comm="syz-executor.6" name="file0" dev="sda" ino=16026 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:zero_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1768297798.137:22): avc: denied { rmdir } for pid=282 comm="syz-executor.6" name="file0" dev="sda" ino=16026 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:zero_device_t:s0 tclass=dir permissive=1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=9 sclass=netlink_route_socket pid=4577 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=9 sclass=netlink_route_socket pid=4577 comm=syz-executor.5 program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO serio: Serial port ptm0 serio: Serial port ptm0 serio: Serial port ptm0 serio: Serial port ptm0 serio: Serial port ptm0 syz-executor.0 (4652) used greatest stack depth: 23416 bytes left SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 syz-executor.6 (4679) used greatest stack depth: 23408 bytes left loop0: detected capacity change from 0 to 127 No source specified loop0: detected capacity change from 0 to 127 No source specified kauditd_printk_skb: 1 callbacks suppressed audit: type=1400 audit(1768297803.315:24): avc: denied { module_load } for pid=4768 comm="syz-executor.0" path=2F6D656D66643A2F70726F632F7468726561642D73656C662F617474722F6673637265617465202864656C6574656429 dev="tmpfs" ino=1037 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=system permissive=1 netlink: 16 bytes leftover after parsing attributes in process `syz-executor.2'. UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list netlink: 16 bytes leftover after parsing attributes in process `syz-executor.2'. ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= 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 06 00 blk_print_req_error: 41 callbacks suppressed I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x880700 phys_seg 3 prio class 2 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 02 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 8 prio class 2 buffer_io_error: 38 callbacks suppressed Buffer I/O error on dev sr0, logical block 0, async page read Buffer I/O error on dev sr0, logical block 1, async page read Buffer I/O error on dev sr0, logical block 2, async page read Buffer I/O error on dev sr0, logical block 3, async page read Buffer I/O error on dev sr0, logical block 4, async page read Buffer I/O error on dev sr0, logical block 5, async page read Buffer I/O error on dev sr0, logical block 6, async page read Buffer I/O error on dev sr0, logical block 7, async page read 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 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 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 4 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 5 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 6 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 7 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci0: Opcode 0x0406 failed: -4 Bluetooth: hci0: Opcode 0x0406 failed: -4 Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Opcode 0x0406 failed: -4 Bluetooth: hci2: Opcode 0x0406 failed: -4 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: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Opcode 0x0406 failed: -4 Bluetooth: hci4: Opcode 0x0406 failed: -4 Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Opcode 0x0406 failed: -4 Bluetooth: hci5: Opcode 0x0406 failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0406 failed: -4 Bluetooth: hci6: Opcode 0x0406 failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0406 failed: -4 Bluetooth: hci7: Opcode 0x0406 failed: -4 audit: type=1400 audit(1768297804.953:25): avc: denied { create } for pid=4840 comm="syz-executor.6" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:fonts_t:s0 tclass=netlink_generic_socket permissive=1 audit: type=1400 audit(1768297804.956:26): avc: denied { write } for pid=4840 comm="syz-executor.6" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:fonts_t:s0 tclass=netlink_generic_socket permissive=1 audit: type=1400 audit(1768297804.956:27): avc: denied { read } for pid=4840 comm="syz-executor.6" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:fonts_t:s0 tclass=netlink_generic_socket permissive=1 loop2: detected capacity change from 0 to 512 EXT4-fs: Ignoring removed bh option EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support! EXT4-fs (loop2): can't mount with data=, fs mounted w/o journal loop2: detected capacity change from 0 to 512 EXT4-fs: Ignoring removed bh option EXT4-fs (loop2): can't mount with data=, fs mounted w/o journal audit: type=1400 audit(1768297805.410:28): avc: denied { tracepoint } for pid=4884 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop2: detected capacity change from 0 to 512 EXT4-fs: Ignoring removed bh option EXT4-fs (loop2): can't mount with data=, fs mounted w/o journal Bluetooth: hci0: command 0x0c1a tx timeout audit: type=1400 audit(1768297805.443:29): avc: denied { write } for pid=4884 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop2: detected capacity change from 0 to 512 EXT4-fs: Ignoring removed bh option program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO loop3: detected capacity change from 0 to 16 EXT4-fs (loop3): #clusters per group too big: 32803 loop3: detected capacity change from 0 to 16 EXT4-fs (loop3): #clusters per group too big: 32803 program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO EXT4-fs (loop2): can't mount with data=, fs mounted w/o journal mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium