INFO: task syz-executor.3:7578 blocked for more than 143 seconds.
Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23336 pid:7578 ppid:30348 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2639
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2687
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:3029
ext4_da_write_begin+0x170/0xb50 fs/ext4/inode.c:3056
generic_perform_write+0x256/0x570 mm/filemap.c:3772
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8bf/0x1710 fs/ext4/file.c:700
__kernel_write_iter+0x262/0x730 fs/read_write.c:517
dump_emit_page fs/coredump.c:864 [inline]
dump_user_range+0x234/0x700 fs/coredump.c:915
elf_core_dump+0x2718/0x3590 fs/binfmt_elf.c:2137
do_coredump+0x2764/0x3c50 fs/coredump.c:762
get_signal+0x1c03/0x2450 kernel/signal.c:2845
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000098 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f44bd1abf80 RCX: 00007f44bd08c0a9
RDX: 00000000200000c0 RSI: 0000000020000090 RDI: 0000000021008000
RBP: 00007f44bd0e7ae9 R08: 0000000020000140 R09: 0000000020000140
R10: 0000000020000100 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffdca1e52cf R14: 00007f44bde8e300 R15: 0000000000022000
INFO: task syz-executor.3:7936 blocked for more than 143 seconds.
Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24232 pid:7936 ppid:30348 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2639
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2687
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:3029
ext4_da_write_begin+0x170/0xb50 fs/ext4/inode.c:3056
generic_perform_write+0x256/0x570 mm/filemap.c:3772
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8bf/0x1710 fs/ext4/file.c:700
__kernel_write_iter+0x262/0x730 fs/read_write.c:517
dump_emit_page fs/coredump.c:864 [inline]
dump_user_range+0x234/0x700 fs/coredump.c:915
elf_core_dump+0x2718/0x3590 fs/binfmt_elf.c:2137
do_coredump+0x2764/0x3c50 fs/coredump.c:762
get_signal+0x1c03/0x2450 kernel/signal.c:2845
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000098 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f44bd1abf80 RCX: 00007f44bd08c0a9
RDX: 00000000200000c0 RSI: 0000000020000090 RDI: 0000000021008000
RBP: 00007f44bd0e7ae9 R08: 0000000020000140 R09: 0000000020000140
R10: 0000000020000100 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffdca1e52cf R14: 00007f44bde8e300 R15: 0000000000022000
INFO: task syz-executor.3:8010 blocked for more than 144 seconds.
Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24232 pid:8010 ppid:30348 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2639
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2687
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:3029
ext4_da_write_begin+0x170/0xb50 fs/ext4/inode.c:3056
generic_perform_write+0x256/0x570 mm/filemap.c:3772
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8bf/0x1710 fs/ext4/file.c:700
__kernel_write_iter+0x262/0x730 fs/read_write.c:517
dump_emit_page fs/coredump.c:864 [inline]
dump_user_range+0x234/0x700 fs/coredump.c:915
elf_core_dump+0x2718/0x3590 fs/binfmt_elf.c:2137
do_coredump+0x2764/0x3c50 fs/coredump.c:762
get_signal+0x1c03/0x2450 kernel/signal.c:2845
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000098 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f44bd1abf80 RCX: 00007f44bd08c0a9
RDX: 00000000200000c0 RSI: 0000000020000090 RDI: 0000000021008000
RBP: 00007f44bd0e7ae9 R08: 0000000020000140 R09: 0000000020000140
R10: 0000000020000100 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffdca1e52cf R14: 00007f44bde8e300 R15: 0000000000022000
INFO: task syz-executor.3:8140 blocked for more than 144 seconds.
Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23784 pid:8140 ppid:30348 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2639
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2687
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:3029
ext4_da_write_begin+0x170/0xb50 fs/ext4/inode.c:3056
generic_perform_write+0x256/0x570 mm/filemap.c:3772
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8bf/0x1710 fs/ext4/file.c:700
__kernel_write_iter+0x262/0x730 fs/read_write.c:517
dump_emit_page fs/coredump.c:864 [inline]
dump_user_range+0x234/0x700 fs/coredump.c:915
elf_core_dump+0x2718/0x3590 fs/binfmt_elf.c:2137
do_coredump+0x2764/0x3c50 fs/coredump.c:762
get_signal+0x1c03/0x2450 kernel/signal.c:2845
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000098 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f44bd1abf80 RCX: 00007f44bd08c0a9
RDX: 00000000200000c0 RSI: 0000000020000090 RDI: 0000000021008000
RBP: 00007f44bd0e7ae9 R08: 0000000020000140 R09: 0000000020000140
R10: 0000000020000100 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffdca1e52cf R14: 00007f44bde8e300 R15: 0000000000022000
INFO: task syz-executor.2:8169 blocked for more than 145 seconds.
Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24360 pid:8169 ppid:32263 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2639
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2687
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:3029
ext4_da_write_begin+0x170/0xb50 fs/ext4/inode.c:3056
generic_perform_write+0x256/0x570 mm/filemap.c:3772
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8bf/0x1710 fs/ext4/file.c:700
__kernel_write_iter+0x262/0x730 fs/read_write.c:517
dump_emit_page fs/coredump.c:864 [inline]
dump_user_range+0x234/0x700 fs/coredump.c:915
elf_core_dump+0x2718/0x3590 fs/binfmt_elf.c:2137
do_coredump+0x2764/0x3c50 fs/coredump.c:762
get_signal+0x1c03/0x2450 kernel/signal.c:2845
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000098 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff363fabf80 RCX: 00007ff363e8c0a9
RDX: 00000000200000c0 RSI: 0000000020000090 RDI: 0000000021008000
RBP: 00007ff363ee7ae9 R08: 0000000020000140 R09: 0000000020000140
R10: 0000000020000100 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fff14fc6ddf R14: 00007ff364cc2300 R15: 0000000000022000
INFO: task syz-executor.2:8200 blocked for more than 147 seconds.
Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23824 pid:8200 ppid:32263 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2639
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2687
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:3029
ext4_da_write_begin+0x170/0xb50 fs/ext4/inode.c:3056
generic_perform_write+0x256/0x570 mm/filemap.c:3772
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8bf/0x1710 fs/ext4/file.c:700
__kernel_write_iter+0x262/0x730 fs/read_write.c:517
dump_emit_page fs/coredump.c:864 [inline]
dump_user_range+0x234/0x700 fs/coredump.c:915
elf_core_dump+0x2718/0x3590 fs/binfmt_elf.c:2137
do_coredump+0x2764/0x3c50 fs/coredump.c:762
get_signal+0x1c03/0x2450 kernel/signal.c:2845
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000098 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff363fabf80 RCX: 00007ff363e8c0a9
RDX: 00000000200000c0 RSI: 0000000020000090 RDI: 0000000021008000
RBP: 00007ff363ee7ae9 R08: 0000000020000140 R09: 0000000020000140
R10: 0000000020000100 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fff14fc6ddf R14: 00007ff364cc2300 R15: 0000000000022000
INFO: task syz-executor.3:8213 blocked for more than 149 seconds.
Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24232 pid:8213 ppid:30348 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2639
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2687
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:3029
ext4_da_write_begin+0x170/0xb50 fs/ext4/inode.c:3056
generic_perform_write+0x256/0x570 mm/filemap.c:3772
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8bf/0x1710 fs/ext4/file.c:700
__kernel_write_iter+0x262/0x730 fs/read_write.c:517
dump_emit_page fs/coredump.c:864 [inline]
dump_user_range+0x234/0x700 fs/coredump.c:915
elf_core_dump+0x2718/0x3590 fs/binfmt_elf.c:2137
do_coredump+0x2764/0x3c50 fs/coredump.c:762
get_signal+0x1c03/0x2450 kernel/signal.c:2845
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000098 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f44bd1abf80 RCX: 00007f44bd08c0a9
RDX: 00000000200000c0 RSI: 0000000020000090 RDI: 0000000021008000
RBP: 00007f44bd0e7ae9 R08: 0000000020000140 R09: 0000000020000140
R10: 0000000020000100 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffdca1e52cf R14: 00007f44bde8e300 R15: 0000000000022000
INFO: task syz-executor.2:8221 blocked for more than 150 seconds.
Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23824 pid:8221 ppid:32263 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2639
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2687
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:3029
ext4_da_write_begin+0x170/0xb50 fs/ext4/inode.c:3056
generic_perform_write+0x256/0x570 mm/filemap.c:3772
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8bf/0x1710 fs/ext4/file.c:700
__kernel_write_iter+0x262/0x730 fs/read_write.c:517
dump_emit_page fs/coredump.c:864 [inline]
dump_user_range+0x234/0x700 fs/coredump.c:915
elf_core_dump+0x2718/0x3590 fs/binfmt_elf.c:2137
do_coredump+0x2764/0x3c50 fs/coredump.c:762
get_signal+0x1c03/0x2450 kernel/signal.c:2845
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000098 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff363fabf80 RCX: 00007ff363e8c0a9
RDX: 00000000200000c0 RSI: 0000000020000090 RDI: 0000000021008000
RBP: 00007ff363ee7ae9 R08: 0000000020000140 R09: 0000000020000140
R10: 0000000020000100 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fff14fc6ddf R14: 00007ff364cc2300 R15: 0000000000022000
INFO: task syz-executor.2:8300 blocked for more than 150 seconds.
Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23976 pid:8300 ppid:32263 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2639
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2687
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:3029
ext4_da_write_begin+0x170/0xb50 fs/ext4/inode.c:3056
generic_perform_write+0x256/0x570 mm/filemap.c:3772
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8bf/0x1710 fs/ext4/file.c:700
__kernel_write_iter+0x262/0x730 fs/read_write.c:517
dump_emit_page fs/coredump.c:864 [inline]
dump_user_range+0x234/0x700 fs/coredump.c:915
elf_core_dump+0x2718/0x3590 fs/binfmt_elf.c:2137
do_coredump+0x2764/0x3c50 fs/coredump.c:762
get_signal+0x1c03/0x2450 kernel/signal.c:2845
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000098 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff363fabf80 RCX: 00007ff363e8c0a9
RDX: 00000000200000c0 RSI: 0000000020000090 RDI: 0000000021008000
RBP: 00007ff363ee7ae9 R08: 0000000020000140 R09: 0000000020000140
R10: 0000000020000100 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fff14fc6ddf R14: 00007ff364cc2300 R15: 0000000000022000
INFO: task syz-executor.4:8426 blocked for more than 151 seconds.
Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23688 pid:8426 ppid:6384 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2639
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2687
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:3029
ext4_da_write_begin+0x170/0xb50 fs/ext4/inode.c:3056
generic_perform_write+0x256/0x570 mm/filemap.c:3772
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8bf/0x1710 fs/ext4/file.c:700
__kernel_write_iter+0x262/0x730 fs/read_write.c:517
dump_emit_page fs/coredump.c:864 [inline]
dump_user_range+0x234/0x700 fs/coredump.c:915
elf_core_dump+0x2718/0x3590 fs/binfmt_elf.c:2137
do_coredump+0x2764/0x3c50 fs/coredump.c:762
get_signal+0x1c03/0x2450 kernel/signal.c:2845
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000008 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fedec3abf80 RCX: 00007fedec28c0a9
RDX: 00000000200000c0 RSI: 0000000020000000 RDI: 0000000021008000
RBP: 00007fedec2e7ae9 R08: 0000000020000140 R09: 0000000020000140
R10: 0000000020000100 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fff175f5acf R14: 00007feded0d5300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
#0: ffffffff8c78dcb0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/12:
#0: ffffffff8c78d9b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
#0: ffffffff8c78e800 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
2 locks held by getty/4741:
#0: ffff888021620098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900020382f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
4 locks held by kworker/u4:9/12933:
#0: ffff88801e0ec938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88801e0ec938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88801e0ec938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff88801e0ec938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff88801e0ec938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff88801e0ec938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc90014b97da8 ((work_completion)(&ei->i_rsv_conversion_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffff8880b98287c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_change+0x1bf/0x2f0 kernel/sched/psi.c:900
#3: ffff88801274aa70 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xb2/0x2080 kernel/sched/core.c:4100
3 locks held by kworker/1:4/30343:
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc9000bdb7da8 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffffffff8c7994b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#2: ffffffff8c7994b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x5df/0x780 kernel/rcu/tree_exp.h:946
4 locks held by kworker/u4:0/6365:
#0: ffff88801764d938 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88801764d938 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88801764d938 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff88801764d938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff88801764d938 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff88801764d938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc900059cfda8 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffff88814b5a6b98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1af/0x690 mm/page-writeback.c:2581
#3: ffff88814b5a83f8 (&journal->j_checkpoint_mutex){+.+.}-{3:3}, at: __jbd2_log_wait_for_space+0x238/0x460 fs/jbd2/checkpoint.c:110
4 locks held by syz-executor.4/6384:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: do_unlinkat+0x183/0x640 fs/namei.c:4299
#1: ffff8880400c9580 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
#1: ffff8880400c9580 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x270/0x640 fs/namei.c:4303
#2: ffff88804fbe55c0 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#2: ffff88804fbe55c0 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: vfs_unlink+0xd9/0x930 fs/namei.c:4241
#3: ffff88814b5a83f8 (&journal->j_checkpoint_mutex){+.+.}-{3:3}, at: __jbd2_log_wait_for_space+0x238/0x460 fs/jbd2/checkpoint.c:110
3 locks held by syz-executor.3/7578:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff888057ad1800 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888057ad1800 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.3/7936:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff88804942e6c0 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88804942e6c0 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.3/8010:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff88805097d600 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88805097d600 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.3/8140:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff88805b9d35c0 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88805b9d35c0 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.2/8169:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff888086f4d440 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888086f4d440 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.2/8200:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff88804f961880 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88804f961880 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.3/8213:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff8880409f86c0 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880409f86c0 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.2/8221:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff888043d68900 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888043d68900 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.2/8300:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff8880426d3840 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880426d3840 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.4/8426:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff88804708f780 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88804708f780 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.2/8446:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff88805d80d600 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88805d80d600 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.4/8522:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff888048788600 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888048788600 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.2/8541:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff88804396f4c0 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88804396f4c0 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279
#2: ffff88814b5a40e0 (&type->s_umount_key#50){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2684
3 locks held by syz-executor.2/8680:
#0: ffff88814b5a4460 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1c03/0x2450 kernel/signal.c:2845
#1: ffff888047043880 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888047043880 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:279