================================ WARNING: inconsistent lock state 6.10.0-rc2-syzkaller-00790-g5a532459aa91 #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.3/7373 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff8880b94387e8 (lock#10){?.+.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] ffff8880b94387e8 (lock#10){?.+.}-{2:2}, at: __mmap_lock_do_trace_released+0x83/0x620 mm/mmap_lock.c:243 {HARDIRQ-ON-W} state was registered at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0xa8/0x630 mm/mmap_lock.c:237 __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline] mmap_read_trylock include/linux/mmap_lock.h:164 [inline] vmf_anon_prepare mm/memory.c:3240 [inline] do_anonymous_page mm/memory.c:4457 [inline] do_pte_missing mm/memory.c:3901 [inline] handle_pte_fault+0x6ffc/0x7130 mm/memory.c:5380 __handle_mm_fault mm/memory.c:5523 [inline] handle_mm_fault+0x10df/0x1ba0 mm/memory.c:5688 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline] handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 irq event stamp: 2856 hardirqs last enabled at (2855): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (2855): [] _raw_spin_unlock_irqrestore+0x8f/0x140 kernel/locking/spinlock.c:194 hardirqs last disabled at (2856): [] sysvec_irq_work+0xe/0xc0 arch/x86/kernel/irq_work.c:17 softirqs last enabled at (2798): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (2798): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (2798): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (2539): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (2539): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (2539): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(lock#10); lock(lock#10); *** DEADLOCK *** 4 locks held by syz-executor.3/7373: #0: ffff88807cca0d48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x310 fs/file.c:1191 #1: ffff88802ab1c420 (sb_writers#4){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline] #1: ffff88802ab1c420 (sb_writers#4){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586 #2: ffff88802ab1eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_read fs/ext4/ext4.h:1772 [inline] #2: ffff88802ab1eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages+0x1bf/0x3c0 fs/ext4/inode.c:2767 #3: ffff8880b9437e18 (lock#4){+.+.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] #3: ffff8880b9437e18 (lock#4){+.+.}-{2:2}, at: lru_add_drain+0x79/0x3e0 mm/swap.c:756 stack backtrace: CPU: 0 PID: 7373 Comm: syz-executor.3 Not tainted 6.10.0-rc2-syzkaller-00790-g5a532459aa91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 valid_state+0x13a/0x1c0 kernel/locking/lockdep.c:4013 mark_lock_irq+0xbb/0xc20 kernel/locking/lockdep.c:4216 mark_lock+0x223/0x350 kernel/locking/lockdep.c:4678 mark_usage kernel/locking/lockdep.c:4564 [inline] __lock_acquire+0xb8e/0x1fd0 kernel/locking/lockdep.c:5091 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_released+0x9c/0x620 mm/mmap_lock.c:243 __mmap_lock_trace_released include/linux/mmap_lock.h:42 [inline] mmap_read_unlock_non_owner include/linux/mmap_lock.h:176 [inline] do_mmap_read_unlock+0x5d/0x60 kernel/bpf/task_iter.c:1049 irq_work_single+0xe2/0x240 kernel/irq_work.c:221 irq_work_run_list kernel/irq_work.c:252 [inline] irq_work_run+0x18b/0x350 kernel/irq_work.c:261 __sysvec_irq_work+0xb8/0x430 arch/x86/kernel/irq_work.c:22 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0x9e/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 6e e5 6a f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 93 37 d4 f5 65 8b 05 54 72 72 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90012ffeae0 EFLAGS: 00000206 RAX: f0880ba76ca2de00 RBX: 1ffff920025ffd60 RCX: ffffffff8172d6ba RDX: dffffc0000000000 RSI: ffffffff8bcabb80 RDI: 0000000000000001 RBP: ffffc90012ffeb70 R08: ffffffff92fab5df R09: 1ffffffff25f56bb R10: dffffc0000000000 R11: fffffbfff25f56bc R12: dffffc0000000000 R13: 1ffff920025ffd5c R14: ffffc90012ffeb00 R15: 0000000000000246 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] unlock_page_lruvec_irqrestore include/linux/memcontrol.h:1636 [inline] folio_batch_move_lru+0x5ba/0x690 mm/swap.c:226 lru_add_drain_cpu+0x10e/0x8c0 mm/swap.c:657 lru_add_drain+0x123/0x3e0 mm/swap.c:757 __folio_batch_release+0x55/0xa0 mm/swap.c:1081 folio_batch_release include/linux/pagevec.h:101 [inline] mpage_prepare_extent_to_map+0x19db/0x1c80 fs/ext4/inode.c:2505 ext4_do_writepages+0xc52/0x3d40 fs/ext4/inode.c:2632 ext4_writepages+0x213/0x3c0 fs/ext4/inode.c:2768 do_writepages+0x359/0x870 mm/page-writeback.c:2634 filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:397 __filemap_fdatawrite_range mm/filemap.c:430 [inline] file_write_and_wait_range+0x1aa/0x290 mm/filemap.c:788 ext4_sync_file+0x260/0xb90 fs/ext4/fsync.c:158 generic_write_sync include/linux/fs.h:2794 [inline] ext4_buffered_write_iter+0x286/0x350 fs/ext4/file.c:305 ext4_file_write_iter+0x1de/0x1a10 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa72/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa49687d0a9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa4963ff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fa4969b3f80 RCX: 00007fa49687d0a9 RDX: 0000000000000012 RSI: 0000000020000980 RDI: 000000000000000c RBP: 00007fa4968ec074 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fa4969b3f80 R15: 00007ffc15bcbeb8 ---------------- Code disassembly (best guess): 0: 9c pushf 1: 8f 44 24 20 pop 0x20(%rsp) 5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1) a: 74 08 je 0x14 c: 4c 89 f7 mov %r14,%rdi f: e8 6e e5 6a f6 call 0xf66ae582 14: f6 44 24 21 02 testb $0x2,0x21(%rsp) 19: 75 52 jne 0x6d 1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d 22: 74 01 je 0x25 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 93 37 d4 f5 call 0xf5d437c2 <-- trapping instruction 2f: 65 8b 05 54 72 72 74 mov %gs:0x74727254(%rip),%eax # 0x7472728a 36: 85 c0 test %eax,%eax 38: 74 43 je 0x7d 3a: 48 rex.W 3b: c7 .byte 0xc7 3c: 04 24 add $0x24,%al 3e: 0e (bad) 3f: 36 ss