===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.2/4134 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.2/4134: #0: ffff88800f9763f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801bf07640 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f33a950 (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: 4134 Comm: syz-executor.2 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: 0033:0x7f15c5b40427 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:00007ffd435c2388 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f15c5b40427 RDX: 00007ffd435c2467 RSI: 00007f15c5b9b019 RDI: 00007ffd435c2450 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd435c2220 R10: 00007ffd435c20d7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd435c2450 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.2/4134 Modules linked in: CPU: 0 UID: 0 PID: 4134 Comm: syz-executor.2 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:ffff88804ece79a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801ab5d280 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88801ab5d67c RBP: ffff88801ab5d280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801ab5d280 R13: 0000000000000001 R14: ffffffff85c107b0 R15: ffff8880389ee268 FS: 0000555569df6400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f15c5bc0542 CR3: 00000000535cf000 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: 0033:0x7f15c5b40427 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:00007ffd435c2388 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f15c5b40427 RDX: 00007ffd435c2467 RSI: 00007f15c5b9b019 RDI: 00007ffd435c2450 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd435c2220 R10: 00007ffd435c20d7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd435c2450 irq event stamp: 175 hardirqs last enabled at (175): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (174): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (170): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (168): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. raw_sendmsg: syz-executor.5 forgot to set AF_INET. Fix it! netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. 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 loop4: detected capacity change from 0 to 6 FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop0): Directory bread(block 6) failed FAT-fs (loop0): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): 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 loop4: detected capacity change from 0 to 6 FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed FAT-fs (loop4): Directory bread(block 6) failed loop4: detected capacity change from 0 to 512 process 'syz-executor.1' launched './file1' with NULL argv: empty string added 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 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 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 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. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. Invalid ELF header magic: != ELF Invalid ELF header magic: != ELF audit: type=1400 audit(1768292434.153:11): avc: denied { tracepoint } for pid=4496 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 Invalid ELF header magic: != ELF Invalid ELF header magic: != ELF Invalid ELF header magic: != ELF ======================================================= 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. ======================================================= set_capacity_and_notify: 1 callbacks suppressed loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir251032915/syzkaller.RtahsK/53/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir251032915/syzkaller.RtahsK/53/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir251032915/syzkaller.RtahsK/54/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ext4 filesystem being mounted at /syzkaller-testdir251032915/syzkaller.RtahsK/55/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. program syz-executor.3 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: invalid service action 31 program syz-executor.3 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: non-matching transfer count (9216/0) loop2: detected capacity change from 0 to 512 perf: interrupt took too long (2534 > 2500), lowering kernel.perf_event_max_sample_rate to 78000 perf: interrupt took too long (4078 > 4011), lowering kernel.perf_event_max_sample_rate to 49000 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. perf: interrupt took too long (6445 > 6410), lowering kernel.perf_event_max_sample_rate to 31000 perf: interrupt took too long (8096 > 8056), lowering kernel.perf_event_max_sample_rate to 24000 ext4 filesystem being mounted at /syzkaller-testdir251032915/syzkaller.RtahsK/56/file0 supports timestamps until 2038-01-19 (0x7fffffff) No source specified No source specified EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. program syz-executor.3 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: invalid service action 31 perf: interrupt took too long (10143 > 10120), lowering kernel.perf_event_max_sample_rate to 19000 program syz-executor.3 is using a deprecated SCSI ioctl, please convert it to SG_IO perf: interrupt took too long (12680 > 12678), lowering kernel.perf_event_max_sample_rate to 15000 ata1.00: invalid service action 31 perf: interrupt took too long (15932 > 15850), lowering kernel.perf_event_max_sample_rate to 12000 program syz-executor.3 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: invalid service action 31