EXT4-fs (loop1): corrupt root inode, run e2fsck EXT4-fs (loop6): get root inode failed EXT4-fs (loop1): mount failed EXT4-fs (loop6): mount failed ===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.7/6131 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.7/6131: #0: ffff88800f7da3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88804a2e4698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f7de950 (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: 6131 Comm: syz-executor.7 Not tainted 6.19.0-rc5-next-20260114 #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 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbfb1d38427 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:00007ffe1c85d1d8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbfb1d38427 RDX: ffffffffffffffbc RSI: 00007fbfb1d9300e RDI: 00007fbfb1d921dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe1c85cc50 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe1c85d2a0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.7/6131 Modules linked in: CPU: 1 UID: 0 PID: 6131 Comm: syz-executor.7 Not tainted 6.19.0-rc5-next-20260114 #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 16 c0 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 24 74 03 e8 bc 5c 56 00 e9 RSP: 0018:ffff88801a4079a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888048ef1b80 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff888048ef1f7c RBP: ffff888048ef1b80 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff888048ef1b80 R13: 0000000000000001 R14: ffffffff85c0d380 R15: ffff88804a0aa938 FS: 000055558b3a2400(0000) GS:ffff8880e5443000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6417aa7b80 CR3: 000000004bfaf000 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 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbfb1d38427 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:00007ffe1c85d1d8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbfb1d38427 RDX: ffffffffffffffbc RSI: 00007fbfb1d9300e RDI: 00007fbfb1d921dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe1c85cc50 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe1c85d2a0 irq event stamp: 691 hardirqs last enabled at (691): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (690): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (686): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (684): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- No source specified EXT4-fs error (device loop0): ext4_orphan_get:1417: comm syz-executor.0: bad orphan inode 1895825408 EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop0: detected capacity change from 0 to 512 loop5: detected capacity change from 0 to 512 EXT4-fs (loop0): corrupt root inode, run e2fsck EXT4-fs (loop0): mount failed EXT4-fs (loop5): corrupt root inode, run e2fsck EXT4-fs (loop5): mount failed loop6: detected capacity change from 0 to 512 No source specified EXT4-fs error (device loop6): __ext4_fill_super:5560: inode #2: comm syz-executor.6: iget: special inode unallocated EXT4-fs (loop6): get root inode failed EXT4-fs (loop6): mount failed FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 UID: 0 PID: 6164 Comm: syz-executor.2 Tainted: G W 6.19.0-rc5-next-20260114 #1 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 should_fail_ex+0x4d7/0x5e0 should_failslab+0xc2/0x120 __kmalloc_cache_noprof+0x80/0x730 nl80211_prepare_wdev_dump+0x403/0x760 nl80211_dump_station+0xdb/0xa60 genl_dumpit+0x125/0x220 netlink_dump+0x51a/0x1200 __netlink_dump_start+0x6c5/0x980 genl_family_rcv_msg_dumpit+0x1b6/0x2b0 genl_rcv_msg+0x447/0x7e0 netlink_rcv_skb+0x147/0x430 genl_rcv+0x28/0x40 netlink_unicast+0x5a7/0x870 netlink_sendmsg+0x8a3/0xd80 ____sys_sendmsg+0xa38/0xbf0 ___sys_sendmsg+0x10f/0x1b0 __sys_sendmsg+0x150/0x200 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fad55c95b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fad5320b188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fad55da8f60 RCX: 00007fad55c95b19 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 RBP: 00007fad5320b1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffd9fdd499f R14: 00007fad5320b300 R15: 0000000000022000 loop0: detected capacity change from 0 to 512 loop5: detected capacity change from 0 to 512 No source specified loop6: detected capacity change from 0 to 512 EXT4-fs (loop0): corrupt root inode, run e2fsck EXT4-fs (loop0): mount failed EXT4-fs error (device loop6): __ext4_fill_super:5560: inode #2: comm syz-executor.6: iget: special inode unallocated loop1: detected capacity change from 0 to 512 EXT4-fs (loop5): corrupt root inode, run e2fsck EXT4-fs (loop5): mount failed EXT4-fs (loop6): get root inode failed EXT4-fs (loop6): mount failed EXT4-fs (loop1): corrupt root inode, run e2fsck EXT4-fs (loop1): mount failed