================================ WARNING: inconsistent lock state 6.1.94-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.1/6132 [HC0[0]:SC1[1]:HE0:SE0] takes: ffff8880b9935e90 (lock#10){+.?.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] ffff8880b9935e90 (lock#10){+.?.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x84/0x670 mm/mmap_lock.c:237 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0x9d/0x670 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:137 [inline] get_mmap_lock_carefully mm/memory.c:5304 [inline] lock_mm_and_find_vma+0x219/0x2e0 mm/memory.c:5366 do_user_addr_fault arch/x86/mm/fault.c:1312 [inline] handle_page_fault arch/x86/mm/fault.c:1431 [inline] exc_page_fault+0x169/0x620 arch/x86/mm/fault.c:1487 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 fault_in_readable+0x1c8/0x340 fault_in_iov_iter_readable+0xdb/0x270 lib/iov_iter.c:356 generic_perform_write+0x207/0x5e0 mm/filemap.c:3807 ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:285 ext4_dio_write_iter fs/ext4/file.c:584 [inline] ext4_file_write_iter+0x1575/0x1880 fs/ext4/file.c:677 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 irq event stamp: 6463 hardirqs last enabled at (6462): [] asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:658 hardirqs last disabled at (6463): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (6463): [] _raw_spin_lock_irq+0xa9/0x110 kernel/locking/spinlock.c:170 softirqs last enabled at (5752): [] __do_softirq kernel/softirq.c:605 [inline] softirqs last enabled at (5752): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (5752): [] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 softirqs last disabled at (6459): [] __do_softirq kernel/softirq.c:605 [inline] softirqs last disabled at (6459): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (6459): [] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(lock#10); lock(lock#10); *** DEADLOCK *** 7 locks held by syz-executor.1/6132: #0: ffff88807bc7b268 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ba/0x360 fs/file.c:1062 #1: ffff88814c08e460 (sb_writers#4){.+.+}-{0:0}, at: vfs_write+0x269/0xba0 fs/read_write.c:580 #2: ffff88805902b628 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #2: ffff88805902b628 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xaf/0x3a0 fs/ext4/file.c:279 #3: ffff88805902b4b0 (&ei->i_data_sem){++++}-{3:3}, at: ext4_da_map_blocks fs/ext4/inode.c:1788 [inline] #3: ffff88805902b4b0 (&ei->i_data_sem){++++}-{3:3}, at: ext4_da_get_block_prep+0x418/0x13f0 fs/ext4/inode.c:1869 #4: ffff8880b9928358 (&base->lock){-.-.}-{2:2}, at: __run_timers+0x111/0x890 kernel/time/timer.c:1802 #5: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #5: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #5: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: trace_call_bpf+0xbe/0x6a0 kernel/trace/bpf_trace.c:134 #6: ffff888017f962d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #6: ffff888017f962d8 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x232/0x9c0 kernel/bpf/stackmap.c:144 stack backtrace: CPU: 1 PID: 6132 Comm: syz-executor.1 Not tainted 6.1.94-syzkaller #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+0x1e3/0x2cb lib/dump_stack.c:106 valid_state+0x136/0x1c0 kernel/locking/lockdep.c:3969 mark_lock_irq+0xa8/0xba0 kernel/locking/lockdep.c:4172 mark_lock+0x21c/0x340 kernel/locking/lockdep.c:4628 __lock_acquire+0xb7f/0x1f80 kernel/locking/lockdep.c:5003 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0x9d/0x670 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:137 [inline] stack_map_get_build_id_offset+0x99e/0x9c0 kernel/bpf/stackmap.c:144 __bpf_get_stack+0x495/0x570 kernel/bpf/stackmap.c:452 bpf_prog_e6cf5f9c69743609+0x3a/0x3e bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline] __bpf_prog_run include/linux/filter.h:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] bpf_prog_run_array include/linux/bpf.h:1635 [inline] trace_call_bpf+0x345/0x6a0 kernel/trace/bpf_trace.c:135 perf_trace_run_bpf_submit+0x7b/0x1d0 kernel/events/core.c:9924 perf_trace_timer_class+0x2c8/0x380 include/trace/events/timer.h:12 trace_timer_cancel include/trace/events/timer.h:138 [inline] debug_deactivate kernel/time/timer.c:832 [inline] detach_timer+0x2f4/0x380 kernel/time/timer.c:878 expire_timers kernel/time/timer.c:1538 [inline] __run_timers+0x60c/0x890 kernel/time/timer.c:1820 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:folio_inc_refs mm/swap.c:434 [inline] RIP: 0010:folio_mark_accessed+0x95/0x1c90 mm/swap.c:478 Code: 04 32 e8 6e 6e ce ff 48 89 5c 24 10 0f 1f 44 00 00 49 89 dc 49 c1 ec 03 43 80 3c 34 00 74 08 48 89 df e8 9e ee 25 00 48 8b 1b <48> 8d 4c 24 60 48 c1 e9 03 48 b8 00 00 00 00 00 fc ff df 48 89 4c RSP: 0018:ffffc900034d6f20 EFLAGS: 00000246 RAX: ffffffff81bc24e2 RBX: 00fff5800000205a RCX: 0000000000040000 RDX: ffffc9000becc000 RSI: 000000000002b9b7 RDI: 000000000002b9b8 RBP: ffffc900034d6ff0 R08: ffffffff81bb1504 R09: fffffbfff1ce7146 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffd40003374b8 R13: ffff88807085a000 R14: dffffc0000000000 R15: 0000000000036940 __find_get_block+0x2c8/0x1120 fs/buffer.c:1311 __getblk_gfp+0x2d/0xa20 fs/buffer.c:1329 sb_getblk include/linux/buffer_head.h:356 [inline] ext4_get_branch+0x2cf/0x710 fs/ext4/indirect.c:166 ext4_ind_map_blocks+0x346/0x2b10 fs/ext4/indirect.c:554 ext4_da_map_blocks fs/ext4/inode.c:1794 [inline] ext4_da_get_block_prep+0x77b/0x13f0 fs/ext4/inode.c:1869 ext4_block_write_begin+0x631/0x1400 fs/ext4/inode.c:1100 ext4_da_write_begin+0x5ac/0x9c0 fs/ext4/inode.c:3012 generic_perform_write+0x2fc/0x5e0 mm/filemap.c:3817 ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:285 ext4_dio_write_iter fs/ext4/file.c:584 [inline] ext4_file_write_iter+0x1575/0x1880 fs/ext4/file.c:677 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f403fa7cf29 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:00007f404075b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f403fbb4050 RCX: 00007f403fa7cf29 RDX: 0000000000248800 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007f403faec074 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f403fbb4050 R15: 00007ffee3404018 ---------------- Code disassembly (best guess): 0: 04 32 add $0x32,%al 2: e8 6e 6e ce ff call 0xffce6e75 7: 48 89 5c 24 10 mov %rbx,0x10(%rsp) c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 11: 49 89 dc mov %rbx,%r12 14: 49 c1 ec 03 shr $0x3,%r12 18: 43 80 3c 34 00 cmpb $0x0,(%r12,%r14,1) 1d: 74 08 je 0x27 1f: 48 89 df mov %rbx,%rdi 22: e8 9e ee 25 00 call 0x25eec5 27: 48 8b 1b mov (%rbx),%rbx * 2a: 48 8d 4c 24 60 lea 0x60(%rsp),%rcx <-- trapping instruction 2f: 48 c1 e9 03 shr $0x3,%rcx 33: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 3a: fc ff df 3d: 48 rex.W 3e: 89 .byte 0x89 3f: 4c rex.WR