===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.3/6019 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.3/6019: #0: ffff88800f93c3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801bf8c698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f428950 (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: 6019 Comm: syz-executor.3 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_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: 0033:0x7fc7ef84c427 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:00007ffea23823d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc7ef84c427 RDX: 00007ffea23824b7 RSI: 00007fc7ef8a7019 RDI: 00007ffea23824a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffea2382270 R10: 00007ffea2382127 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffea23824a0 hpet: Lost 1 RTC interrupts ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.3/6019 Modules linked in: CPU: 0 UID: 0 PID: 6019 Comm: syz-executor.3 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:ffff8880496779a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801b7bd280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801b7bd67c RBP: ffff88801b7bd280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801b7bd280 R13: 0000000000000001 R14: ffffffff85c0f6d0 R15: ffff88804a1358e0 FS: 0000555557a64400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc7ef8cc543 CR3: 00000000142e6000 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: 0033:0x7fc7ef84c427 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:00007ffea23823d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc7ef84c427 RDX: 00007ffea23824b7 RSI: 00007fc7ef8a7019 RDI: 00007ffea23824a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffea2382270 R10: 00007ffea2382127 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffea23824a0 irq event stamp: 169 hardirqs last enabled at (169): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (168): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (164): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (162): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. random: crng reseeded on system resumption Unrecognized hibernate image header format! PM: hibernation: Image mismatch: architecture specific data random: crng reseeded on system resumption Unrecognized hibernate image header format! PM: hibernation: Image mismatch: architecture specific data netlink: 20 bytes leftover after parsing attributes in process `syz-executor.2'. ieee80211 phy20: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.2'. ieee80211 phy21: Selected rate control algorithm 'minstrel_ht' SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 : Can't lookup blockdev netlink: 20 bytes leftover after parsing attributes in process `syz-executor.2'. ieee80211 phy22: Selected rate control algorithm 'minstrel_ht' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.2'. ieee80211 phy23: Selected rate control algorithm 'minstrel_ht' syz-executor.2 (6202) used greatest stack depth: 23928 bytes left sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. kernel profiling enabled (shift: 63) profiling shift: 63 too large kernel profiling enabled (shift: 63) profiling shift: 63 too large sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. perf: interrupt took too long (4976 > 4970), lowering kernel.perf_event_max_sample_rate to 40000 hpet: Lost 1 RTC interrupts perf: interrupt took too long (6221 > 6220), lowering kernel.perf_event_max_sample_rate to 32000 perf: interrupt took too long (7801 > 7776), lowering kernel.perf_event_max_sample_rate to 25000 audit: type=1400 audit(1768577256.372:15): avc: denied { ingress } for pid=6608 comm="syz-executor.1" saddr=10.0.2.2 src=40210 daddr=10.0.2.15 dest=22 netif=eth0 scontext=system_u:object_r:sshd_exec_t:s0 tcontext=system_u:object_r:netif_t:s0 tclass=netif permissive=1 audit: type=1400 audit(1768577256.373:16): avc: denied { recvfrom } for pid=6608 comm="syz-executor.1" saddr=10.0.2.2 src=40210 daddr=10.0.2.15 dest=22 netif=eth0 scontext=system_u:object_r:sshd_exec_t:s0 tcontext=system_u:object_r:node_t:s0 tclass=node permissive=1 audit: type=1400 audit(1768577256.373:17): avc: denied { recv } for pid=6608 comm="syz-executor.1" saddr=10.0.2.2 src=40210 daddr=10.0.2.15 dest=22 netif=eth0 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:sshd_exec_t:s0 tclass=peer permissive=1 lo: entered allmulticast mode lo: left allmulticast mode SELinux: Context system_u:object_r:ipmi_device_t:s is not valid (left unmapped). audit: type=1400 audit(1768577257.932:18): avc: denied { read } for pid=6838 comm="syz-executor.7" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 netlink: 'syz-executor.6': attribute type 33 has an invalid length. netlink: 'syz-executor.6': attribute type 33 has an invalid length. loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop4: detected capacity change from 0 to 512 loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000.