INFO: task syz-executor.1:7360 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28464 pid: 7360 ppid: 6673 flags:0x20000004
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
rwsem_down_write_slowpath+0x761/0x1130 kernel/locking/rwsem.c:1117
__down_write_common kernel/locking/rwsem.c:1272 [inline]
__down_write_common kernel/locking/rwsem.c:1269 [inline]
__down_write kernel/locking/rwsem.c:1281 [inline]
down_write+0x135/0x150 kernel/locking/rwsem.c:1528
filemap_invalidate_lock include/linux/fs.h:828 [inline]
blkdev_fallocate+0x1e2/0x420 block/fops.c:625
vfs_fallocate+0x48d/0xe10 fs/open.c:307
compat_ioctl_preallocate+0x196/0x210 fs/ioctl.c:323
__do_compat_sys_ioctl+0x201/0x290 fs/ioctl.c:942
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6f15549
RSP: 002b:00000000f450f5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000402c582b
RDX: 0000000020000080 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b983a20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6223:
1 lock held by syz-executor.3/15519:
1 lock held by syz-executor.2/7359:
#0: ffff8881408a1548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:828 [inline]
#0: ffff8881408a1548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e2/0x420 block/fops.c:625
1 lock held by syz-executor.1/7360:
#0: ffff8881408a1548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:828 [inline]
#0: ffff8881408a1548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e2/0x420 block/fops.c:625
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 26942 Comm: syz-executor.0 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lockdep_softirqs_off+0x143/0x340 kernel/locking/lockdep.c:4463
Code: 84 df 00 00 00 65 48 8b 1c 25 40 70 02 00 48 8d bb 40 0a 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e b8 01 00 00 48 8d bb 18 0a 00 00 48 b8 00
RSP: 0000:ffffc90004b0fd38 EFLAGS: 00000806
RAX: 0000000000000000 RBX: ffff88808334ba00 RCX: 1ffffffff2055338
RDX: 1ffff11010669888 RSI: 0000000000000001 RDI: ffff88808334c440
RBP: ffffffff812bab14 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81433b4f R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90004b0ff58 R15: 0000000000000004
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:00000000f452cb40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000000000054 CR3: 000000002899c000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
__local_bh_disable_ip+0x57/0xc0 kernel/softirq.c:323
local_bh_disable include/linux/bottom_half.h:20 [inline]
fpregs_lock arch/x86/include/asm/fpu/api.h:72 [inline]
fpu__clear_user_states+0x3a/0x1f0 arch/x86/kernel/fpu/core.c:615
handle_signal arch/x86/kernel/signal.c:841 [inline]
arch_do_signal_or_restart+0xc61/0x1c40 arch/x86/kernel/signal.c:870
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
irqentry_exit_to_user_mode+0x5/0x40 kernel/entry/common.c:313
exc_page_fault+0xc6/0x180 arch/x86/mm/fault.c:1544
asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0023:0xf6f43aa0
Code: e8 15 8f 04 00 83 c4 10 85 c0 75 12 83 c4 20 5b 5e 5f c3 8d 83 49 a1 f7 ff e8 4c fb ff ff 8d 83 57 a1 f7 ff e8 41 fb ff ff 90 <53> e8 8a ec ff ff 81 c3 5a 45 12 00 83 ec 08 8b 44 24 14 8b 40 0c
RSP: 002b:00000000f452c13c EFLAGS: 00000283
RAX: 000000000000000b RBX: 0000000000000000 RCX: 00000000f452c1cc
RDX: 00000000f452c14c RSI: 0000000000000003 RDI: 0000000000000000
RBP: 00000000f708efa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
----------------
Code disassembly (best guess):
0: 84 df test %bl,%bh
2: 00 00 add %al,(%rax)
4: 00 65 48 add %ah,0x48(%rbp)
7: 8b 1c 25 40 70 02 00 mov 0x27040,%ebx
e: 48 8d bb 40 0a 00 00 lea 0xa40(%rbx),%rdi
15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1c: fc ff df
1f: 48 89 fa mov %rdi,%rdx
22: 48 c1 ea 03 shr $0x3,%rdx
26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax
* 2a: 84 c0 test %al,%al <-- trapping instruction
2c: 74 08 je 0x36
2e: 3c 03 cmp $0x3,%al
30: 0f 8e b8 01 00 00 jle 0x1ee
36: 48 8d bb 18 0a 00 00 lea 0xa18(%rbx),%rdi
3d: 48 rex.W
3e: b8 .byte 0xb8