ci2 starts bisection 2023-06-29 06:06:50.430440709 +0000 UTC m=+46349.342243987 bisecting fixing commit since a343b0dd87b42ba9d508fbf7d0c06f744c2e0954 building syzkaller on cf1845599c0bdab59c69518eaa0ecb960ec7ddf0 ensuring issue is reproducible on original commit a343b0dd87b42ba9d508fbf7d0c06f744c2e0954 testing commit a343b0dd87b42ba9d508fbf7d0c06f744c2e0954 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 366e837b2b0c6126d15cafb2ab0c630f4ac716b1245504f802e0e04353fc6336 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: BUG: soft lockup in sys_execve run #12: crashed: BUG: workqueue lockup run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: BUG: soft lockup in do_idle run #16: crashed: INFO: rcu detected stall in corrupted run #17: crashed: BUG: soft lockup in do_group_exit run #18: crashed: BUG: soft lockup in do_idle run #19: crashed: BUG: soft lockup in do_idle testing current HEAD a1c449d00ff8ce2c5fcea5f755df682d1f6bc2ef testing commit a1c449d00ff8ce2c5fcea5f755df682d1f6bc2ef gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 30dc9871f851a41dd5469dd82e9c9286b7dd04a668c4481f050640918c45ddd5 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: BUG: workqueue lockup run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: BUG: soft lockup in sys_openat run #8: crashed: BUG: soft lockup in wb_workfn run #9: crashed: BUG: soft lockup in ext4_end_io_rsv_work crash still not fixed/happens on the oldest tested release revisions tested: 2, total time: 2h8m15.081194029s (build: 1h57m55.745118299s, test: 8m59.071759413s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Linux 6.1.36 crash: BUG: soft lockup in ext4_end_io_rsv_work watchdog: BUG: soft lockup - CPU#0 stuck for 34s! [kworker/u4:1:11] Modules linked in: irq event stamp: 1260508 hardirqs last enabled at (1260507): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (1260507): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (1260508): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (1260508): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (1247580): [] spin_unlock_bh include/linux/spinlock.h:395 [inline] softirqs last enabled at (1247580): [] macvlan_process_broadcast+0x230/0x59c drivers/net/macvlan.c:305 softirqs last disabled at (1247578): [] spin_lock_bh include/linux/spinlock.h:355 [inline] softirqs last disabled at (1247578): [] macvlan_process_broadcast+0xe8/0x59c drivers/net/macvlan.c:303 CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 6.1.36-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] pc : _raw_spin_unlock_irqrestore+0x58/0xac kernel/locking/spinlock.c:194 lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] lr : _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 sp : ffff8000186a7830 x29: ffff8000186a7830 x28: dfff800000000000 x27: 1fffff8000716ab1 x26: ffff0000cf57c000 x25: ffff0000df3c0520 x24: ffff0000df3c02b0 x23: 1fffff8000716ab0 x22: ffff0000df3c04e0 x21: ffff0000df3c0520 x20: ffff0000df3c04e0 x19: 0000000000000000 x18: ffff0000df3c0014 x17: ffff0000df3c0018 x16: ffff8000082aa084 x15: ffff0000df3c001c x14: 1ffff0000284a0b0 x13: dfff800000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000080 x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff800010faaf40 x0 : ffff8001a06a6000 Call trace: arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x58/0xac kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:405 [inline] __folio_end_writeback+0x3cc/0x760 mm/page-writeback.c:2943 folio_end_writeback+0xe8/0x33c mm/filemap.c:1613 end_page_writeback+0x44/0x5c mm/folio-compat.c:26 ext4_finish_bio+0x518/0x664 fs/ext4/page-io.c:145 ext4_release_io_end+0xec/0x244 fs/ext4/page-io.c:160 ext4_end_io_end fs/ext4/page-io.c:194 [inline] ext4_do_flush_completed_IO fs/ext4/page-io.c:259 [inline] ext4_end_io_rsv_work+0x3f8/0x4ec fs/ext4/page-io.c:273 process_one_work+0x6c4/0x117c kernel/workqueue.c:2289 worker_thread+0x7dc/0xe2c kernel/workqueue.c:2436 kthread+0x210/0x28c kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860