INFO: task syz-executor.4:9109 blocked for more than 143 seconds. Not tainted 5.15.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:26368 pid: 9109 ppid: 7041 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 io_schedule+0xba/0x130 kernel/sched/core.c:8389 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0x121/0x1a0 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0xd5/0x110 kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer fs/buffer.c:69 [inline] lock_buffer include/linux/buffer_head.h:368 [inline] __sync_dirty_buffer+0x28f/0x310 fs/buffer.c:3142 __ext4_handle_dirty_metadata+0x1c6/0x680 fs/ext4/ext4_jbd2.c:380 ext4_convert_inline_data_nolock+0x5cb/0xfe0 fs/ext4/inline.c:1250 ext4_convert_inline_data+0x297/0x3d0 fs/ext4/inline.c:2004 ext4_fallocate+0x150/0x3310 fs/ext4/extents.c:4672 vfs_fallocate+0x2a5/0xb90 fs/open.c:307 ksys_fallocate fs/open.c:330 [inline] __do_sys_fallocate fs/open.c:338 [inline] __se_sys_fallocate fs/open.c:336 [inline] __x64_sys_fallocate+0xb0/0x100 fs/open.c:336 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f018b066188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000100000001 RDI: 0000000000000006 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 000000002811fdff R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffce7d5304f R14: 00007f018b066300 R15: 0000000000022000 INFO: task syz-executor.4:9201 blocked for more than 143 seconds. Not tainted 5.15.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:25888 pid: 9201 ppid: 7041 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 io_schedule+0xba/0x130 kernel/sched/core.c:8389 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0x121/0x1a0 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0xd5/0x110 kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer fs/buffer.c:69 [inline] lock_buffer include/linux/buffer_head.h:368 [inline] write_dirty_buffer+0x113/0x130 fs/buffer.c:3121 fsync_buffers_list fs/buffer.c:705 [inline] sync_mapping_buffers+0x300/0x980 fs/buffer.c:548 ext4_fsync_nojournal fs/ext4/fsync.c:86 [inline] ext4_sync_file+0x74c/0xc90 fs/ext4/fsync.c:170 generic_write_sync include/linux/fs.h:2955 [inline] ext4_buffered_write_iter+0x2d3/0x480 fs/ext4/file.c:277 ext4_file_write_iter+0x383/0x1160 fs/ext4/file.c:680 call_write_iter include/linux/fs.h:2163 [inline] new_sync_write+0x360/0x600 fs/read_write.c:507 vfs_write+0x60b/0x900 fs/read_write.c:594 ksys_write+0xf4/0x1d0 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f018b045188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665f9 RDX: 0000000000000082 RSI: 00000000200004c0 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffce7d5304f R14: 00007f018b045300 R15: 0000000000022000 INFO: task syz-executor.5:9111 blocked for more than 144 seconds. Not tainted 5.15.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:26416 pid: 9111 ppid: 7038 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 io_schedule+0xba/0x130 kernel/sched/core.c:8389 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0x121/0x1a0 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0xd5/0x110 kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer fs/buffer.c:69 [inline] lock_buffer include/linux/buffer_head.h:368 [inline] __sync_dirty_buffer+0x28f/0x310 fs/buffer.c:3142 __ext4_handle_dirty_metadata+0x1c6/0x680 fs/ext4/ext4_jbd2.c:380 ext4_convert_inline_data_nolock+0x5cb/0xfe0 fs/ext4/inline.c:1250 ext4_convert_inline_data+0x297/0x3d0 fs/ext4/inline.c:2004 ext4_fallocate+0x150/0x3310 fs/ext4/extents.c:4672 vfs_fallocate+0x2a5/0xb90 fs/open.c:307 ksys_fallocate fs/open.c:330 [inline] __do_sys_fallocate fs/open.c:338 [inline] __se_sys_fallocate fs/open.c:336 [inline] __x64_sys_fallocate+0xb0/0x100 fs/open.c:336 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007fd369c51188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000100000001 RDI: 0000000000000006 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 000000002811fdff R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe36e1394f R14: 00007fd369c51300 R15: 0000000000022000 INFO: task syz-executor.5:9121 blocked for more than 144 seconds. Not tainted 5.15.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:26248 pid: 9121 ppid: 7038 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 io_schedule+0xba/0x130 kernel/sched/core.c:8389 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0x121/0x1a0 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0xd5/0x110 kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer fs/buffer.c:69 [inline] lock_buffer include/linux/buffer_head.h:368 [inline] write_dirty_buffer+0x113/0x130 fs/buffer.c:3121 fsync_buffers_list fs/buffer.c:705 [inline] sync_mapping_buffers+0x300/0x980 fs/buffer.c:548 ext4_fsync_nojournal fs/ext4/fsync.c:86 [inline] ext4_sync_file+0x74c/0xc90 fs/ext4/fsync.c:170 generic_write_sync include/linux/fs.h:2955 [inline] ext4_buffered_write_iter+0x2d3/0x480 fs/ext4/file.c:277 ext4_file_write_iter+0x383/0x1160 fs/ext4/file.c:680 call_write_iter include/linux/fs.h:2163 [inline] new_sync_write+0x360/0x600 fs/read_write.c:507 vfs_write+0x60b/0x900 fs/read_write.c:594 ksys_write+0xf4/0x1d0 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007fd369c30188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665f9 RDX: 0000000000000082 RSI: 00000000200004c0 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffe36e1394f R14: 00007fd369c30300 R15: 0000000000022000 INFO: task syz-executor.2:9180 blocked for more than 144 seconds. Not tainted 5.15.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:26536 pid: 9180 ppid: 7033 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 io_schedule+0xba/0x130 kernel/sched/core.c:8389 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0x121/0x1a0 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0xd5/0x110 kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer fs/buffer.c:69 [inline] lock_buffer include/linux/buffer_head.h:368 [inline] __sync_dirty_buffer+0x28f/0x310 fs/buffer.c:3142 __ext4_handle_dirty_metadata+0x1c6/0x680 fs/ext4/ext4_jbd2.c:380 ext4_convert_inline_data_nolock+0x5cb/0xfe0 fs/ext4/inline.c:1250 ext4_convert_inline_data+0x297/0x3d0 fs/ext4/inline.c:2004 ext4_fallocate+0x150/0x3310 fs/ext4/extents.c:4672 vfs_fallocate+0x2a5/0xb90 fs/open.c:307 ksys_fallocate fs/open.c:330 [inline] __do_sys_fallocate fs/open.c:338 [inline] __se_sys_fallocate fs/open.c:336 [inline] __x64_sys_fallocate+0xb0/0x100 fs/open.c:336 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f08257c0188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000100000001 RDI: 0000000000000006 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 000000002811fdff R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffd609ad87f R14: 00007f08257c0300 R15: 0000000000022000 INFO: task syz-executor.2:9213 blocked for more than 145 seconds. Not tainted 5.15.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:26856 pid: 9213 ppid: 7033 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 io_schedule+0xba/0x130 kernel/sched/core.c:8389 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0x121/0x1a0 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0xd5/0x110 kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer fs/buffer.c:69 [inline] lock_buffer include/linux/buffer_head.h:368 [inline] write_dirty_buffer+0x113/0x130 fs/buffer.c:3121 fsync_buffers_list fs/buffer.c:705 [inline] sync_mapping_buffers+0x300/0x980 fs/buffer.c:548 ext4_fsync_nojournal fs/ext4/fsync.c:86 [inline] ext4_sync_file+0x74c/0xc90 fs/ext4/fsync.c:170 generic_write_sync include/linux/fs.h:2955 [inline] ext4_buffered_write_iter+0x2d3/0x480 fs/ext4/file.c:277 ext4_file_write_iter+0x383/0x1160 fs/ext4/file.c:680 call_write_iter include/linux/fs.h:2163 [inline] new_sync_write+0x360/0x600 fs/read_write.c:507 vfs_write+0x60b/0x900 fs/read_write.c:594 ksys_write+0xf4/0x1d0 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f082579f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665f9 RDX: 0000000000000082 RSI: 00000000200004c0 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffd609ad87f R14: 00007f082579f300 R15: 0000000000022000 INFO: task syz-executor.0:9188 blocked for more than 145 seconds. Not tainted 5.15.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26328 pid: 9188 ppid: 7035 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 io_schedule+0xba/0x130 kernel/sched/core.c:8389 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0x121/0x1a0 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0xd5/0x110 kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer fs/buffer.c:69 [inline] lock_buffer include/linux/buffer_head.h:368 [inline] __sync_dirty_buffer+0x28f/0x310 fs/buffer.c:3142 __ext4_handle_dirty_metadata+0x1c6/0x680 fs/ext4/ext4_jbd2.c:380 ext4_convert_inline_data_nolock+0x5cb/0xfe0 fs/ext4/inline.c:1250 ext4_convert_inline_data+0x297/0x3d0 fs/ext4/inline.c:2004 ext4_fallocate+0x150/0x3310 fs/ext4/extents.c:4672 vfs_fallocate+0x2a5/0xb90 fs/open.c:307 ksys_fallocate fs/open.c:330 [inline] __do_sys_fallocate fs/open.c:338 [inline] __se_sys_fallocate fs/open.c:336 [inline] __x64_sys_fallocate+0xb0/0x100 fs/open.c:336 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f58a6a29188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000100000001 RDI: 0000000000000006 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 000000002811fdff R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffd98fb70df R14: 00007f58a6a29300 R15: 0000000000022000 INFO: task syz-executor.0:9218 blocked for more than 145 seconds. Not tainted 5.15.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26856 pid: 9218 ppid: 7035 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 io_schedule+0xba/0x130 kernel/sched/core.c:8389 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0x121/0x1a0 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0xd5/0x110 kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer fs/buffer.c:69 [inline] lock_buffer include/linux/buffer_head.h:368 [inline] write_dirty_buffer+0x113/0x130 fs/buffer.c:3121 fsync_buffers_list fs/buffer.c:705 [inline] sync_mapping_buffers+0x300/0x980 fs/buffer.c:548 ext4_fsync_nojournal fs/ext4/fsync.c:86 [inline] ext4_sync_file+0x74c/0xc90 fs/ext4/fsync.c:170 generic_write_sync include/linux/fs.h:2955 [inline] ext4_buffered_write_iter+0x2d3/0x480 fs/ext4/file.c:277 ext4_file_write_iter+0x383/0x1160 fs/ext4/file.c:680 call_write_iter include/linux/fs.h:2163 [inline] new_sync_write+0x360/0x600 fs/read_write.c:507 vfs_write+0x60b/0x900 fs/read_write.c:594 ksys_write+0xf4/0x1d0 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f58a6a08188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665f9 RDX: 0000000000000082 RSI: 00000000200004c0 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffd98fb70df R14: 00007f58a6a08300 R15: 0000000000022000 INFO: task syz-executor.1:9193 blocked for more than 145 seconds. Not tainted 5.15.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:26536 pid: 9193 ppid: 7042 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 io_schedule+0xba/0x130 kernel/sched/core.c:8389 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0x121/0x1a0 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0xd5/0x110 kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer fs/buffer.c:69 [inline] lock_buffer include/linux/buffer_head.h:368 [inline] __sync_dirty_buffer+0x28f/0x310 fs/buffer.c:3142 __ext4_handle_dirty_metadata+0x1c6/0x680 fs/ext4/ext4_jbd2.c:380 ext4_convert_inline_data_nolock+0x5cb/0xfe0 fs/ext4/inline.c:1250 ext4_convert_inline_data+0x297/0x3d0 fs/ext4/inline.c:2004 ext4_fallocate+0x150/0x3310 fs/ext4/extents.c:4672 vfs_fallocate+0x2a5/0xb90 fs/open.c:307 ksys_fallocate fs/open.c:330 [inline] __do_sys_fallocate fs/open.c:338 [inline] __se_sys_fallocate fs/open.c:336 [inline] __x64_sys_fallocate+0xb0/0x100 fs/open.c:336 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f99cbc70188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000100000001 RDI: 0000000000000006 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 000000002811fdff R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe1459cbef R14: 00007f99cbc70300 R15: 0000000000022000 INFO: task syz-executor.1:9220 blocked for more than 146 seconds. Not tainted 5.15.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:26624 pid: 9220 ppid: 7042 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 io_schedule+0xba/0x130 kernel/sched/core.c:8389 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0x121/0x1a0 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0xd5/0x110 kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer fs/buffer.c:69 [inline] lock_buffer include/linux/buffer_head.h:368 [inline] write_dirty_buffer+0x113/0x130 fs/buffer.c:3121 fsync_buffers_list fs/buffer.c:705 [inline] sync_mapping_buffers+0x300/0x980 fs/buffer.c:548 ext4_fsync_nojournal fs/ext4/fsync.c:86 [inline] ext4_sync_file+0x74c/0xc90 fs/ext4/fsync.c:170 generic_write_sync include/linux/fs.h:2955 [inline] ext4_buffered_write_iter+0x2d3/0x480 fs/ext4/file.c:277 ext4_file_write_iter+0x383/0x1160 fs/ext4/file.c:680 call_write_iter include/linux/fs.h:2163 [inline] new_sync_write+0x360/0x600 fs/read_write.c:507 vfs_write+0x60b/0x900 fs/read_write.c:594 ksys_write+0xf4/0x1d0 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 RSP: 002b:00007f99cbc4f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665f9 RDX: 0000000000000082 RSI: 00000000200004c0 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffe1459cbef R14: 00007f99cbc4f300 R15: 0000000000022000 Showing all locks held in the system: 2 locks held by kworker/0:0/5: #0: ffff8880b9e31a18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:474 [inline] #0: ffff8880b9e31a18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1317 [inline] #0: ffff8880b9e31a18 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1620 [inline] #0: ffff8880b9e31a18 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x236/0x26c0 kernel/sched/core.c:6201 #1: ffff8880b9e1f9c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39d/0x480 kernel/sched/psi.c:880 2 locks held by kworker/u4:0/8: #0: ffff88800fc69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88800fc69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88800fc69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff88800fc69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff88800fc69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff88800fc69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1450 kernel/workqueue.c:2268 #1: ffff8880b9e1f9c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39d/0x480 kernel/sched/psi.c:880 1 lock held by khungtaskd/27: #0: ffffffff8ab76840 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 1 lock held by in:imklog/6219: #0: ffff88807aa8b770 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:990 2 locks held by kworker/u4:5/8507: #0: ffff8880b9e31a18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:474 [inline] #0: ffff8880b9e31a18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1317 [inline] #0: ffff8880b9e31a18 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1620 [inline] #0: ffff8880b9e31a18 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x236/0x26c0 kernel/sched/core.c:6201 #1: ffff8880b9e1f9c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39d/0x480 kernel/sched/psi.c:880 2 locks held by syz-executor.4/9109: #0: ffff888012380460 (sb_writers#5){.+.+}-{0:0}, at: ksys_fallocate fs/open.c:330 [inline] #0: ffff888012380460 (sb_writers#5){.+.+}-{0:0}, at: __do_sys_fallocate fs/open.c:338 [inline] #0: ffff888012380460 (sb_writers#5){.+.+}-{0:0}, at: __se_sys_fallocate fs/open.c:336 [inline] #0: ffff888012380460 (sb_writers#5){.+.+}-{0:0}, at: __x64_sys_fallocate+0xb0/0x100 fs/open.c:336 #1: ffff8880697fd088 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:142 [inline] #1: ffff8880697fd088 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x1ca/0x3d0 fs/ext4/inline.c:2002 2 locks held by syz-executor.4/9201: #0: ffff888079c36af0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:990 #1: ffff888012380460 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0xf4/0x1d0 fs/read_write.c:647 2 locks held by syz-executor.5/9111: #0: ffff88807934e460 (sb_writers#5){.+.+}-{0:0}, at: ksys_fallocate fs/open.c:330 [inline] #0: ffff88807934e460 (sb_writers#5){.+.+}-{0:0}, at: __do_sys_fallocate fs/open.c:338 [inline] #0: ffff88807934e460 (sb_writers#5){.+.+}-{0:0}, at: __se_sys_fallocate fs/open.c:336 [inline] #0: ffff88807934e460 (sb_writers#5){.+.+}-{0:0}, at: __x64_sys_fallocate+0xb0/0x100 fs/open.c:336 #1: ffff8880697fda80 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:142 [inline] #1: ffff8880697fda80 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x1ca/0x3d0 fs/ext4/inline.c:2002 2 locks held by syz-executor.5/9121: #0: ffff888079c379f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:990 #1: ffff88807934e460 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0xf4/0x1d0 fs/read_write.c:647 2 locks held by syz-executor.2/9180: #0: ffff888074fc4460 (sb_writers#5){.+.+}-{0:0}, at: ksys_fallocate fs/open.c:330 [inline] #0: ffff888074fc4460 (sb_writers#5){.+.+}-{0:0}, at: __do_sys_fallocate fs/open.c:338 [inline] #0: ffff888074fc4460 (sb_writers#5){.+.+}-{0:0}, at: __se_sys_fallocate fs/open.c:336 [inline] #0: ffff888074fc4460 (sb_writers#5){.+.+}-{0:0}, at: __x64_sys_fallocate+0xb0/0x100 fs/open.c:336 #1: ffff88806960b2a0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:142 [inline] #1: ffff88806960b2a0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x1ca/0x3d0 fs/ext4/inline.c:2002 2 locks held by syz-executor.2/9213: #0: ffff88801d650d70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:990 #1: ffff888074fc4460 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0xf4/0x1d0 fs/read_write.c:647 2 locks held by syz-executor.0/9188: #0: ffff8880184a2460 (sb_writers#5){.+.+}-{0:0}, at: ksys_fallocate fs/open.c:330 [inline] #0: ffff8880184a2460 (sb_writers#5){.+.+}-{0:0}, at: __do_sys_fallocate fs/open.c:338 [inline] #0: ffff8880184a2460 (sb_writers#5){.+.+}-{0:0}, at: __se_sys_fallocate fs/open.c:336 [inline] #0: ffff8880184a2460 (sb_writers#5){.+.+}-{0:0}, at: __x64_sys_fallocate+0xb0/0x100 fs/open.c:336 #1: ffff88805f033c98 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:142 [inline] #1: ffff88805f033c98 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x1ca/0x3d0 fs/ext4/inline.c:2002 2 locks held by syz-executor.0/9218: #0: ffff8880726a5770 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:990 #1: ffff8880184a2460 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0xf4/0x1d0 fs/read_write.c:647 2 locks held by syz-executor.1/9193: #0: ffff8880198f6460 (sb_writers#5){.+.+}-{0:0}, at: ksys_fallocate fs/open.c:330 [inline] #0: ffff8880198f6460 (sb_writers#5){.+.+}-{0:0}, at: __do_sys_fallocate fs/open.c:338 [inline] #0: ffff8880198f6460 (sb_writers#5){.+.+}-{0:0}, at: __se_sys_fallocate fs/open.c:336 [inline] #0: ffff8880198f6460 (sb_writers#5){.+.+}-{0:0}, at: __x64_sys_fallocate+0xb0/0x100 fs/open.c:336 #1: ffff88805f0128a8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:142 [inline] #1: ffff88805f0128a8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x1ca/0x3d0 fs/ext4/inline.c:2002 2 locks held by syz-executor.1/9220: #0: ffff8880720dc5f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:990 #1: ffff8880198f6460 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0xf4/0x1d0 fs/read_write.c:647 2 locks held by syz-executor.3/9206: #0: ffff888076a32460 (sb_writers#5){.+.+}-{0:0}, at: ksys_fallocate fs/open.c:330 [inline] #0: ffff888076a32460 (sb_writers#5){.+.+}-{0:0}, at: __do_sys_fallocate fs/open.c:338 [inline] #0: ffff888076a32460 (sb_writers#5){.+.+}-{0:0}, at: __se_sys_fallocate fs/open.c:336 [inline] #0: ffff888076a32460 (sb_writers#5){.+.+}-{0:0}, at: __x64_sys_fallocate+0xb0/0x100 fs/open.c:336 #1: ffff88805f039eb0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:142 [inline] #1: ffff88805f039eb0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x1ca/0x3d0 fs/ext4/inline.c:2002 2 locks held by syz-executor.3/9226: #0: ffff888071512370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:990 #1: ffff888076a32460 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0xf4/0x1d0 fs/read_write.c:647 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc3-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+0x57/0x7d lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x30/0xc0 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x11a/0x160 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+0x88c/0xbf0 kernel/hung_task.c:295 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8507 Comm: kworker/u4:5 Not tainted 5.15.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: writeback wb_workfn (flush-7:3) RIP: 0010:memory_is_nonzero mm/kasan/generic.c:101 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x63/0x180 mm/kasan/generic.c:189 Code: 00 00 00 00 00 fc ff df 4d 89 ca 48 c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 48 89 e8 49 8d 5a 01 48 89 da 48 29 ea 48 83 fa 10 <7e> 63 41 89 eb 41 83 e3 07 75 74 4c 8d 5a 07 48 85 d2 4c 0f 49 da RSP: 0018:ffffc9000b777100 EFLAGS: 00000083 RAX: fffffbfff1dc0b3b RBX: fffffbfff1dc0b3c RCX: ffffffff8152c23d RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8ee059d8 RBP: fffffbfff1dc0b3b R08: 0000000000000000 R09: ffffffff8ee059df R10: fffffbfff1dc0b3b R11: 0000000000000079 R12: 0000000000000001 R13: ffff8880611854c0 R14: ffff888061185eb8 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2cdf795000 CR3: 000000000a88e000 CR4: 0000000000350ef0 Call Trace: instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] hlock_class kernel/locking/lockdep.c:199 [inline] check_wait_context kernel/locking/lockdep.c:4713 [inline] __lock_acquire+0x6ed/0x5410 kernel/locking/lockdep.c:4965 lock_acquire kernel/locking/lockdep.c:5625 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590 rcu_lock_acquire include/linux/rcupdate.h:267 [inline] rcu_read_lock include/linux/rcupdate.h:687 [inline] unlocked_inode_to_wb_begin include/linux/backing-dev.h:320 [inline] account_page_redirty+0x167/0x580 mm/page-writeback.c:2559 redirty_page_for_writepage+0x3d/0x50 mm/page-writeback.c:2579 __block_write_full_page+0x488/0xdf0 fs/buffer.c:1789 __writepage+0x58/0x140 mm/page-writeback.c:2320 write_cache_pages+0x53d/0xd40 mm/page-writeback.c:2255 generic_writepages mm/page-writeback.c:2346 [inline] generic_writepages+0xd7/0x140 mm/page-writeback.c:2335 do_writepages+0x16c/0x6e0 mm/page-writeback.c:2364 __writeback_single_inode+0xd6/0xaf0 fs/fs-writeback.c:1616 writeback_sb_inodes+0x466/0xc50 fs/fs-writeback.c:1881 __writeback_inodes_wb+0xb2/0x200 fs/fs-writeback.c:1950 wb_writeback+0x5a6/0x8b0 fs/fs-writeback.c:2055 wb_check_old_data_flush fs/fs-writeback.c:2155 [inline] wb_do_writeback fs/fs-writeback.c:2208 [inline] wb_workfn+0x6de/0xf30 fs/fs-writeback.c:2237 process_one_work+0x87f/0x1450 kernel/workqueue.c:2297 worker_thread+0x598/0x1040 kernel/workqueue.c:2444 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 fc add %bh,%ah 6: ff (bad) 7: df 4d 89 fisttps -0x77(%rbp) a: ca 48 c1 lret $0xc148 d: ed in (%dx),%eax e: 03 49 c1 add -0x3f(%rcx),%ecx 11: ea (bad) 12: 03 48 01 add 0x1(%rax),%ecx 15: c5 49 01 (bad) 18: c2 48 89 retq $0x8948 1b: e8 49 8d 5a 01 callq 0x15a8d69 20: 48 89 da mov %rbx,%rdx 23: 48 29 ea sub %rbp,%rdx 26: 48 83 fa 10 cmp $0x10,%rdx * 2a: 7e 63 jle 0x8f <-- trapping instruction 2c: 41 89 eb mov %ebp,%r11d 2f: 41 83 e3 07 and $0x7,%r11d 33: 75 74 jne 0xa9 35: 4c 8d 5a 07 lea 0x7(%rdx),%r11 39: 48 85 d2 test %rdx,%rdx 3c: 4c 0f 49 da cmovns %rdx,%r11